Urban Stormwater Drainage Emergency Repair Technology System and Standards: A Comparative Study of European and American Approaches

1. Introduction

Urban drainage systems face increasing challenges due to climate change-induced extreme weather events, aging infrastructure, and urbanization. Heavy rainfall can lead to flooding, infrastructure damage, and environmental pollution, making effective emergency repair systems crucial for urban resilience . As cities worldwide experience more frequent and intense storm events, the need for robust emergency repair technologies and standards has become paramount (5).

European and American countries have developed comprehensive approaches to stormwater drainage emergency repair, with distinct standards and methodologies reflecting their unique environmental conditions, regulatory frameworks, and technical traditions (2). This report provides a detailed analysis of urban stormwater drainage emergency repair technology systems and standards in Europe and America, with a focus on structural repair, flow control, sediment management, real-time monitoring, and post-flood recovery .

The study compares European and American standards, identifies best practices from both regions, and presents case studies demonstrating successful implementation of emergency repair technologies across different types of drainage systems (13). By examining these approaches, cities can adopt integrated strategies to enhance their stormwater drainage systems' resilience and effectiveness in 应对 extreme weather events (12).

2. European and American Standards for Urban Drainage Systems

2.1 European Standardization Framework

European standards for urban drainage systems are primarily governed by the CEN (European Committee for Standardization) standards, particularly EN 752 "Drain and sewer systems outside buildings" (2). This standard specifies objectives, functional requirements, and principles for strategic and policy activities related to planning, design, installation, operation, maintenance, and rehabilitation of drainage systems (52).

The EN 752 standard is divided into several parts, with Part 4 focusing on hydraulic design and environmental considerations (2). It sets out minimum requirements for the design of urban drainage systems, including criteria for dimensioning rain return periods and flooding frequencies (2). The standard recommends design storm frequencies ranging from 1 in 1 year for rural areas to 1 in 10 years for underground railway/underpasses, with corresponding flooding frequencies ranging from 1 in 10 years to 1 in 50 years (2).

European countries have incorporated EN 752 into their national standards, but significant variations exist in implementation across different countries (2). For example, Nordic countries such as Norway, Sweden, Denmark, Finland, and Iceland have developed their own specific guidelines that sometimes exceed the requirements of the European standard (2).

Germany has developed a comprehensive system of standards for urban drainage, including DIN EN 752:2017, which is the German implementation of the European standard (53). The German approach emphasizes sustainability and integrated water management, with standards covering all aspects of drainage system design, construction, maintenance, and repair (77).

2.2 American Standardization Framework

In the United States, the American Society of Civil Engineers (ASCE) plays a central role in developing standards for urban drainage systems (17). ASCE standards provide guidelines for the design, installation, operation, and maintenance of various aspects of urban drainage systems (16).

Key ASCE standards related to stormwater drainage include:

• ASCE/EWRI 45-16: Standard Guidelines for the Design of Urban Stormwater Systems (50)
• ASCE/EWRI 46-16: Standard Guidelines for Installation of Urban Stormwater Systems (50)
• ASCE/EWRI 47-16: Standard Guidelines for the Operation and Maintenance of Urban Stormwater Systems (50)
• ASCE/SEI 24-24: Flood Resistant Design and Construction (29)

These standards were updated in 2016 to incorporate numerous technical details drawn from original research, particularly in the areas of hydrology, hydraulic design, and structural design (50). The ASCE standards provide comprehensive guidance on all aspects of stormwater management, including emergency repair (15).

The U.S. Environmental Protection Agency (EPA) also plays a significant role in regulating stormwater management through the National Pollutant Discharge Elimination System (NPDES) permits (94). The EPA has developed guidelines for various aspects of stormwater management, including real-time control of urban drainage systems (58).

2.3 Comparative Analysis of European and American Standards

A comparison of European and American standards reveals both similarities and significant differences in approach (1). Both systems emphasize the importance of comprehensive planning, proper design, and regular maintenance to ensure the resilience of urban drainage systems (9).

However, there are notable differences in specific requirements and approaches:

1. Design Rainfall Frequencies: European standards, particularly EN 752, provide specific design storm frequencies based on location (rural, residential, city centers, etc.), while American standards such as ASCE 45-16 provide more flexible guidelines that can be adapted to local conditions (2).
2. Regulatory Approach: The European system tends to be more prescriptive, with detailed standards that member states are expected to follow, while the American system allows for more local variation and interpretation, with states and municipalities often developing their own specific regulations based on EPA guidelines (9).
3. Emergency Planning: ASCE has developed specific standards for emergency planning, such as Policy Statement 348 - Emergency Plans for Water Supply, which supports the development of emergency plans by both public and private water providers (17). European standards tend to integrate emergency preparedness more implicitly within broader system requirements (21).
4. Sustainability and Environmental Considerations: European standards, particularly those from Germany and Nordic countries, place a strong emphasis on sustainability and environmental protection, incorporating principles of natural drainage and ecosystem protection (2). American standards, while addressing environmental concerns, tend to focus more on technical performance and engineering solutions (25).
5. Implementation and Enforcement: In Europe, standards often have a more direct legal basis through national implementation, while in the U.S., standards are typically adopted through local building codes and regulations, with enforcement varying by jurisdiction (9).

Both systems have their strengths, and a combined approach that incorporates the best elements of each could lead to more effective and resilient urban drainage systems (13).

3. Emergency Repair Technology System for Urban Drainage

3.1 Structural Repair Technologies

Structural repair of drainage systems is a critical component of emergency response, particularly following extreme weather events or infrastructure failures . Both European and American standards provide guidance on structural repair techniques, with some variations in approach and emphasis.

3.1.1 European Approaches

European standards emphasize the use of trenchless technologies for structural repair, particularly for pipes that are difficult to access or where excavation would be disruptive (3). The European standard EN 15885-2018 "Drainage and sewerage systems - Repair and replacement - Technical classification and characteristics" provides a comprehensive framework for classifying and selecting appropriate repair techniques (57).

Key structural repair technologies in Europe include:

1. Cured-in-Place Pipe (CIPP) Lining: This technique involves inserting a resin-impregnated liner into the existing pipe and curing it in place, creating a new pipe within the old one (3). European standards specify materials, installation procedures, and performance requirements for CIPP liners (8).
2. Spray-Applied Pipe Liners (SAPL): These are used to renew deteriorated gravity storm conduits and culverts . In Europe, standards for SAPL materials and installation have been developed to ensure structural integrity and performance .
3. Sliplining: This involves inserting a new pipe inside the existing pipe, either with a close fit or with grouting to fill the annular space (3). European standards provide guidelines for material selection, installation techniques, and quality control (57).
4. Pipe Bursting and Pipe Ramming: These trenchless techniques involve replacing the existing pipe with a new one without extensive excavation (8). European standards specify requirements for these methods, including equipment specifications and installation procedures (57).

European standards also emphasize the importance of thorough inspection and condition assessment before selecting a repair technique (1). The standard EN 12508 specifies requirements for the condition assessment of drainage systems, including visual inspection, CCTV, and other techniques (57).

3.1.2 American Approaches

In the United States, structural repair technologies are governed by standards such as ASCE 46-16 and ASTM standards for specific materials and techniques (50). American approaches to structural repair emphasize both trenchless and open-cut methods, with a growing emphasis on trenchless technologies for their cost-effectiveness and minimal disruption (3).

Key structural repair technologies in the U.S. include:

1. Sectional Liners: These are used for localized repairs and can be installed without excavating the entire pipe (3). American standards specify materials, installation procedures, and performance requirements for sectional liners (3).
2. Internal Joint Seals: These are used to seal leaks at pipe joints without excavating (3). ASTM standards specify materials and installation methods for internal joint seals (3).
3. Manhole Rehabilitation: Techniques for rehabilitating manholes include precast concrete rings, sprayed concrete, and fiberglass reinforced polymer systems (3). ASCE standards provide guidelines for manhole rehabilitation, including structural design and material requirements (3).
4. Pipe Coating: Various coating materials, such as polyurethane and polyurea, are used to protect and restore deteriorated pipes (22). ASTM standards specify requirements for these coatings, including application methods and performance criteria (22).
5. Storm Culvert Repair: Specialized techniques for repairing storm culverts include coatings, sliplining, and replacement (22). ASCE standards provide guidance on the structural design and repair of storm culverts (22).

The American approach emphasizes the importance of site-specific assessment and the selection of repair methods based on a thorough understanding of the existing conditions, site constraints, and performance requirements .

3.1.3 Best Practices and Integrated Approaches

The best practices for structural repair incorporate elements from both European and American approaches, selecting the most appropriate technique for each specific situation (8). Key integrated practices include:

1. Comprehensive Condition Assessment: Before any repair work begins, a thorough condition assessment should be conducted using techniques such as CCTV inspection, sonar testing, and structural analysis (1).
2. Risk-Based Decision Making: Both European and American standards emphasize the importance of considering risk in selecting repair methods, including risk to public safety, environmental risk, and risk of failure (9).
3. Life-Cycle Cost Analysis: Best practices incorporate life-cycle cost analysis to compare the long-term costs and benefits of different repair options, rather than focusing solely on initial costs (8).
4. Integrated Design and Construction: Successful structural repair projects integrate design and construction phases, with clear communication between engineers, contractors, and regulatory authorities (3).
5. Quality Control and Assurance: Both European and American standards emphasize the importance of rigorous quality control and assurance throughout the repair process (8).

A notable example of integrated best practice is the development of design equations for structural application of spray-applied pipe liners (SAPLs) for invert-cut circular and arch corrugated metal pipe (CMP) culverts . This project incorporated literature review, survey of U.S. and Canadian transportation agencies, review of CIPP design equations, soil box testing, and finite element modeling to develop comprehensive design guidelines .

3.2 Flow Control and Flood Management

Flow control is a critical aspect of urban drainage emergency repair, particularly during and immediately following extreme rainfall events . Both European and American standards provide frameworks for managing stormwater flows to prevent flooding and protect infrastructure (5).

3.2.1 European Approaches

European approaches to flow control emphasize integrated water management and sustainable drainage systems (13). The European standard EN 752-4 provides guidelines for hydraulic design and environmental considerations in drainage systems (2).

Key flow control technologies and practices in Europe include:

1. Real-Time Control (RTC) Systems: These systems use real-time monitoring data to dynamically adjust the operation of drainage systems, optimizing flow management during storms (58). The German Water Association published "Planning Framework for Real-Time Control of Drainage Networks" in 2005, providing guidelines for implementing RTC projects (58).
2. Storage Facilities: European cities commonly use storage facilities such as underground reservoirs, retention basins, and detention ponds to temporarily store excess stormwater and reduce peak flows (24). Munich, for example, has 13 underground reservoirs with a total capacity of 706,000 cubic meters to temporarily store stormwater (24).
3. Combined Sewer Overflow (CSO) Management: European standards provide guidelines for managing combined sewer overflows, including the design of overflow structures and treatment systems (5). In London, the Thames Tideway Tunnel (the "super sewer") is being constructed to reduce CSO discharges into the River Thames (27).
4. Open Floodways: European standards recommend planning for storm runoff that cannot be handled by the pipe system to be conveyed in open floodways without causing damage (2). These floodways are typically designed with a return period of 100 years (2).
5. Green Infrastructure: European approaches increasingly incorporate green infrastructure such as green roofs, permeable pavements, and bioswales into flow control strategies (13). These approaches are particularly emphasized in Nordic countries and Germany (2).

3.2.2 American Approaches

American approaches to flow control emphasize engineering solutions and regulatory compliance, with standards such as ASCE 45-16 providing guidelines for hydraulic design (50). The U.S. EPA has developed comprehensive guidance on stormwater management, including flow control measures (35).

Key flow control technologies and practices in the U.S. include:

1. Stormwater Retention and Detention Basins: These facilities are used to temporarily store stormwater and control peak flows (34). ASCE standards provide guidelines for the design, installation, and maintenance of these basins (67).
2. Flow Control Structures: These include devices such as weirs, orifices, and detention valves that regulate the flow of stormwater (34). American standards specify design criteria and performance requirements for these structures (67).
3. Combined Sewer Overflow Control: The U.S. EPA has developed guidelines for managing combined sewer overflows, including storage, treatment, and flow diversion strategies (56). King County, Washington, has implemented innovative CSO control measures, including the use of injection wells and constructed wetlands (56).
4. Real-Time Adaptive Management: The U.S. EPA published "Real-Time Control of Urban Drainage Systems" in 2006, promoting the use of real-time monitoring and control to optimize stormwater management (58). This approach involves dynamically adjusting facility operations based on real-time data to minimize CSOs and flooding (58).
5. Low-Impact Development (LID) Practices: These practices, including rain gardens, permeable pavements, and green roofs, are increasingly incorporated into American stormwater management to reduce runoff and improve water quality (37). The EPA has developed guidance on integrating LID into MS4 programs (37).

3.2.3 Best Practices and Integrated Approaches

The most effective flow control strategies integrate elements from both European and American approaches, tailoring solutions to local conditions and needs (5). Key integrated practices include:

1. Integrated Water Resources Management (IWRM): This approach, emphasized in Europe, views water management holistically, integrating stormwater management with other water uses and environmental considerations (13). American approaches are increasingly adopting this holistic perspective (25).
2. Adaptive Management: Both European and American standards now emphasize the importance of adaptive management, allowing for adjustments to flow control strategies as conditions change (58).
3. Hybrid Storage and Conveyance Systems: The most effective flow control systems often combine storage facilities with optimized conveyance systems to manage both peak flows and total volume (24).
4. Green and Gray Infrastructure Integration: Successful projects integrate traditional gray infrastructure (pipelines, storage tanks) with green infrastructure (bioswales, permeable pavements) to achieve multiple benefits including flow control, water quality improvement, and urban amenity (13).
5. Performance-Based Design: Both European and American standards are increasingly moving toward performance-based design, where the focus is on achieving specific outcomes rather than prescribing specific technologies (50).

A notable example of integrated best practice is the approach to urban flood management in Copenhagen, Denmark, which incorporates both traditional engineering solutions and innovative urban design (24). Copenhagen's "Rain Plan" combines underground storage, green infrastructure, and street design to manage stormwater while enhancing urban livability (24).

3.3 Sediment Management

Sediment management is a critical component of urban drainage emergency repair, particularly following storms that can wash large amounts of sediment into drainage systems . Both European and American standards provide frameworks for managing sediment in stormwater to protect both drainage systems and receiving waters .

3.3.1 European Approaches

European approaches to sediment management emphasize prevention, capture, and treatment, with standards providing comprehensive guidance on all aspects of sediment control .

Key sediment management practices in Europe include:

1. Source Control: European standards emphasize preventing sediment from entering drainage systems in the first place through measures such as erosion control, vegetation management, and proper site grading .
2. Settling Basins and Inlet Protection: European cities commonly use settling basins and inlet protection devices to capture sediment before it enters the main drainage system . These facilities are typically designed with consideration for both quantity and quality of sediment .
3. Hydrodynamic Separation: This technique uses the principles of fluid dynamics to separate sediment from stormwater, allowing for more efficient sediment removal . European standards specify design criteria and performance requirements for hydrodynamic separators .
4. Active Treatment Systems: These relatively new systems involve the chemical treatment of sediment-laden stormwater to reduce turbidity in nearby water bodies . Chemical flocculants such as chitosan and polyacrylamide are used to cause sediment to settle more quickly, making it easier to remove from the water .
5. Sediment Removal and Disposal: European standards provide guidelines for the safe removal and proper disposal of captured sediment . These guidelines take into account the potential contamination of sediment with pollutants such as heavy metals and hydrocarbons .

European standards also emphasize the importance of regular maintenance and cleaning of drainage systems to prevent sediment buildup and maintain hydraulic capacity (1). The standard EN 14654-1 specifies requirements for the management and quality control of drainage pipe cleaning (57).

3.3.2 American Approaches

In the United States, sediment management is governed by standards such as ASCE 45-16 and EPA guidelines (50). American approaches emphasize both prevention and treatment, with a strong focus on compliance with water quality regulations (35).

Key sediment management practices in the U.S. include:

1. Temporary Sediment Controls: These are used during construction activities to prevent sediment from entering storm drains (39). The Wisconsin Department of Natural Resources has approved technical standards for erosion/sediment control during construction (84).
2. Permanent Sediment Control Structures: These include devices such as sediment basins, sand filters, and hydrodynamic separators that are designed to permanently remove sediment from stormwater (34). ASCE standards provide guidelines for the design, installation, and maintenance of these structures (67).
3. Filtration Systems: These systems use various media to filter sediment from stormwater, improving water quality before discharge (34). The EPA has published guidance on the use of treatment media for stormwater management (34).
4. Wetlands and Vegetated Treatment Areas: These natural or constructed systems use vegetation and soil to filter sediment and other pollutants from stormwater (35). The EPA has recognized the effectiveness of these systems for sediment control and water quality improvement (35).
5. Integrated Vegetated Swales: These systems combine vegetation, soil, and engineered drainage to capture and filter sediment while providing additional benefits such as groundwater recharge and urban green space (35).

The U.S. EPA has developed comprehensive guidance on sediment control, including the "National Menu of Best Management Practices (BMPs) for Stormwater-Post-Construction" (35). These guidelines emphasize the importance of site-specific design and integrated approaches to sediment management (35).

3.3.3 Best Practices and Integrated Approaches

The most effective sediment management strategies integrate elements from both European and American approaches, creating comprehensive programs that address sediment at all stages . Key integrated practices include:

1. Integrated Sediment Management Planning: This approach develops a comprehensive strategy that addresses sediment at all stages, from prevention at the source to treatment and disposal .
2. Hierarchy of Controls: Both European and American standards emphasize a hierarchy of controls, with the highest priority given to preventing sediment from entering the system, followed by capture and treatment, and finally disposal (39).
3. Combined Mechanical and Biological Treatment: The most effective sediment treatment systems often combine mechanical separation (such as settling basins) with biological treatment (such as vegetated swales) to achieve both high efficiency and cost-effectiveness (35).
4. Performance Monitoring: Successful sediment management programs include monitoring to assess the effectiveness of controls and identify opportunities for improvement (83). Both European and American standards emphasize the importance of monitoring to ensure compliance and evaluate performance (83).
5. Public Education and Outreach: Both European and American approaches recognize the importance of engaging the public in sediment management through education and outreach (25).

A notable example of integrated best practice is the approach to sediment management in King County, Washington, which combines European-style integrated water management with American regulatory frameworks (56). King County's approach includes source control, treatment systems, and ongoing monitoring to ensure effectiveness (56).

3.4 Real-Time Monitoring and Early Warning Systems

Real-time monitoring and early warning systems have become increasingly important components of urban drainage emergency repair, allowing for rapid response to changing conditions and more effective management of storm events . Both European and American standards provide frameworks for these systems (5).

3.4.1 European Approaches

European approaches to real-time monitoring emphasize integrated systems that provide comprehensive data for decision-making (90). The European standard EN 12508 specifies requirements for the condition assessment of drainage systems, including monitoring technologies (57).

Key real-time monitoring technologies and practices in Europe include:

1. Distributed Sensor Networks: European cities commonly deploy networks of sensors throughout their drainage systems to monitor water levels, flow rates, 水质，and other parameters in real-time (90).
2. Integrated Monitoring and Control Systems: These systems combine sensor data with control algorithms to automatically adjust the operation of drainage systems in response to changing conditions (58). The European Union's LIFE project on "Real-time pollution-based control of urban drainage and sanitation systems" is developing full-scale demonstrators of integrated pollution-based real-time control (90).
3. Predictive Modeling: European approaches emphasize the use of predictive models to anticipate storm impacts and optimize response strategies . These models are typically integrated with real-time data to provide accurate and timely predictions .
4. Public Warning Systems: European cities have developed sophisticated public warning systems that use real-time data to issue targeted alerts to affected areas (5). These systems are typically integrated with broader emergency management systems (5).

European standards also emphasize the importance of data management and integration, ensuring that monitoring data is accessible to all relevant stakeholders and used effectively in decision-making (57).

3.4.2 American Approaches

In the United States, real-time monitoring is governed by standards such as ASCE 47-16 and EPA guidelines (50). American approaches emphasize the use of advanced technologies to improve both the efficiency and effectiveness of stormwater management (5).

Key real-time monitoring technologies and practices in the U.S. include:

1. Wireless Sensor Networks: American cities are increasingly deploying wireless sensor networks to monitor various aspects of stormwater systems in real-time (5). These networks can include sensors for water level, flow rate, 水质，and other parameters (5).
2. Smart City Integration: American approaches increasingly integrate stormwater monitoring with broader smart city initiatives, leveraging shared infrastructure and data platforms (5).
3. Near-Real-Time Alarms: These systems use telemetry to provide immediate alerts when conditions exceed predefined thresholds (83). The city of Montgomery, Alabama, successfully argued for the use of continuous monitoring with near-real-time alarms to identify potential pollutant sources and solve problems more effectively (83).
4. Open Data Platforms: Many American cities have adopted open data platforms that make real-time stormwater data available to the public and to other city departments (5).
5. Integrated Data Management Systems: These systems collect, store, analyze, and visualize data from multiple sources to support decision-making (5). ASCE standards provide guidelines for the operation and maintenance of these systems (50).

The U.S. EPA has also recognized the value of real-time monitoring for stormwater management, particularly for detecting combined sewer overflows . EPA research has shown that online water quality sensors can be used to detect contamination from rainfall events and provide warnings to the local population .

3.4.3 Best Practices and Integrated Approaches

The most effective real-time monitoring systems integrate elements from both European and American approaches, creating comprehensive systems that deliver actionable information to decision-makers (5). Key integrated practices include:

1. Integrated Monitoring and Control: The most effective systems combine monitoring with control, using real-time data to automatically adjust the operation of drainage systems (58).
2. Scalable Architecture: Successful systems are designed with scalability in mind, allowing for the addition of new sensors and functionality as needs evolve (5).
3. Data Integration and Visualization: Both European and American approaches emphasize the importance of integrating data from multiple sources and presenting it in a user-friendly manner to support decision-making (5).
4. Predictive Analytics: The most advanced systems use predictive analytics to anticipate conditions before they occur, allowing for more proactive response (5).
5. Public Engagement: Both European and American approaches increasingly emphasize engaging the public through real-time data sharing and public warning systems (5).

A notable example of integrated best practice is the OpenStorm platform, which provides an open-source, end-to-end framework for real-time monitoring and control of watersheds (7). This platform includes a robust hardware stack for distributed sensing and control, a cloud services platform for system-level supervision, and comprehensive documentation to support implementation (7). OpenStorm has been deployed in two ongoing projects: a high-resolution flash-flood monitoring network and a real-time stormwater control network (7).

3.5 Post-Flood Recovery and Restoration

Post-flood recovery and restoration is a critical component of urban drainage emergency repair, focusing on returning systems to full functionality and improving resilience to future events (12). Both European and American standards provide frameworks for post-flood recovery, with some variations in approach and emphasis (12).

3.5.1 European Approaches

European approaches to post-flood recovery emphasize both technical restoration and broader environmental and social recovery (41). European standards provide guidelines for assessing damage, prioritizing repairs, and implementing restoration measures (1).

Key post-flood recovery practices in Europe include:

1. Rapid Assessment Protocols: European cities have developed standardized protocols for rapidly assessing damage to drainage systems following floods (1). These protocols typically include both visual inspection and more detailed assessments using technologies such as CCTV and sonar (1).
2. Prioritization Frameworks: European standards provide frameworks for prioritizing repairs based on factors such as risk to public safety, environmental impact, and economic importance (1).
3. Environmental Restoration: European approaches emphasize restoring not just the functionality of drainage systems but also the ecological health of affected waterways (41). This can include measures such as removing concrete lining from rivers, restoring natural river courses, and creating new habitats (41).
4. Community Engagement: European standards emphasize the importance of engaging with communities in post-flood recovery, including addressing their specific needs and concerns (41).
5. Lessons Learned Processes: European cities typically conduct thorough reviews after flood events to identify lessons learned and opportunities for improving both emergency response and long-term resilience (41).

The Rhine River restoration project is a notable example of European post-flood recovery approaches. This project involved removing 不合理的航行、灌溉及防洪工程，拆掉水泥护坡，以草木绿化河岸，对部分改弯取直的人工河段重新恢复其自然河道等 (41). These measures not only improved flood resilience but also enhanced the ecological health of the river (41).

3.5.2 American Approaches

In the United States, post-flood recovery is governed by standards such as ASCE 24-24 and FEMA guidelines (29). American approaches emphasize both the technical aspects of recovery and the integration of recovery efforts with broader disaster management frameworks (40).

Key post-flood recovery practices in the U.S. include:

1. Emergency Repair Protocols: These specify procedures for conducting urgent repairs to restore essential functionality as quickly as possible (69). ASCE standards provide guidelines for emergency repairs, including criteria for determining when immediate action is needed (69).
2. Damage Assessment Protocols: These are used to systematically assess the extent of damage to drainage systems following floods (40). The Federal Emergency Management Agency (FEMA) provides guidelines for conducting these assessments (40).
3. Reconstruction and Replacement: American approaches provide guidelines for both repairing damaged systems and, when necessary, replacing them with improved versions (40). ASCE 24-24 provides guidelines for flood-resistant design and construction to improve resilience in rebuilt areas (29).
4. Debris Management: This includes the removal and proper disposal of debris washed into drainage systems during floods (40). FEMA provides guidelines for debris management in disaster recovery (40).
5. Infrastructure Resilience Upgrades: American approaches increasingly emphasize using post-flood recovery as an opportunity to upgrade infrastructure to higher standards, improving resilience to future events (40).

The recovery of New Orleans' water supply and wastewater system following Hurricane Katrina in 2005 provides a notable example of American post-flood recovery approaches (40). This recovery effort involved:

1. Rapid assessment of damage by the National Institute of Standards and Technology (40).
2. Implementation of emergency repairs to critical infrastructure, including drainage pumps and treatment facilities (40).
3. Strategic opening of breaches to allow gravity drainage of flooded areas (40).
4. Use of temporary pumps and existing facilities to complete the drainage process (40).
5. Implementation of water quality improvements, including artificial aeration to increase dissolved oxygen levels in water discharged into Lake Pontchartrain (40).
6. Comprehensive inspection and repair of damaged pumping stations (40).

This recovery effort demonstrated the importance of clear protocols, coordinated action, and a focus on both immediate needs and long-term resilience (40).

3.5.3 Best Practices and Integrated Approaches

The most effective post-flood recovery strategies integrate elements from both European and American approaches, creating comprehensive programs that address both immediate needs and long-term resilience (12). Key integrated practices include:

1. Comprehensive Damage Assessment: This involves a systematic evaluation of all aspects of the drainage system to identify damage and prioritize repairs (1).
2. Phased Recovery Approach: Successful recovery efforts typically follow a phased approach, starting with emergency repairs to restore essential functionality, followed by more comprehensive repairs and upgrades (69).
3. Resilience Upgrades: Both European and American approaches now emphasize using post-flood recovery as an opportunity to improve the resilience of drainage systems to future events (29).
4. Environmental and Community Integration: The most successful recovery efforts integrate environmental restoration with community needs and priorities (41).
5. Lessons Learned and Continuous Improvement: Both European and American approaches emphasize the importance of conducting thorough reviews after flood events to identify lessons learned and opportunities for improvement (40).

A notable example of integrated best practice is the recovery of the city of Christchurch, New Zealand, following the 2010-2011 earthquakes (12). This recovery effort integrated:

1. Rapid Assessment: Using specialized teams to assess damage to wastewater networks (12).
2. Clear 区分 between Emergency Recovery and Routine Maintenance: Ensuring that damage caused by the disaster was clearly distinguished from normal wear and tear to facilitate appropriate funding and prioritization (12).
3. Updated Design Guidelines: Developing and implementing updated design guidelines to improve the resilience of rebuilt infrastructure (12).
4. Asset Management Integration: Integrating post-disaster recovery with ongoing asset management practices to ensure long-term sustainability (12).
5. Community Engagement: Engaging with the community throughout the recovery process to address their specific needs and concerns (12).

This approach demonstrated how post-flood recovery can be integrated with broader urban planning and sustainability objectives to create more resilient cities (12).

4. Case Studies of Successful Emergency Repair Implementations

4.1 European Case Studies

4.1.1 London, United Kingdom: Thames Tideway Tunnel

The Thames Tideway Tunnel (the "super sewer") is one of Europe's most ambitious stormwater management projects, addressing the challenge of combined sewer overflows (CSOs) into the River Thames (27).

Background: London's existing Victorian-era combined sewer system was designed for a population of 4 million but now serves over 9 million people (27). During heavy rains, the system becomes overwhelmed, leading to an estimated 39 million tonnes of untreated sewage being discharged into the Thames each year (27).

Project Details:

• Length: 25 kilometers (15.5 miles)
• Depth: Up to 70 meters (230 feet)
• Diameter: 7.2 meters (23.6 feet)
• Capacity: Approximately 4.8 billion liters (1.3 billion gallons)

Emergency Repair Integration:

1. Strategic Storage: The tunnel is designed to capture overflow sewage during storms, storing it for later treatment rather than allowing it to pollute the river (27).
2. Real-Time Control: The system incorporates advanced real-time control technologies to optimize the operation of both the tunnel and the existing sewer network (27).
3. Resilient Design: The tunnel is designed to withstand the impacts of climate change, including more frequent and intense storms (27).
4. Sustainability Integration: The project incorporates sustainable design principles, including energy efficiency and environmental protection (27).

Lessons Learned:

1. Long-Term Planning: The project demonstrates the importance of long-term planning for urban drainage systems, even when implementation takes many years (27).
2. Public Engagement: The project faced significant public scrutiny and required extensive engagement to build support (27).
3. Integration with Existing Systems: The success of the tunnel depends on its integration with the existing sewer system, highlighting the importance of system-level thinking (27).
4. Innovative Financing: The project is funded through a combination of government investment and a levy on London households, demonstrating innovative approaches to financing large-scale infrastructure projects (27).

4.1.2 Munich, Germany: Underground Stormwater Storage System

Munich has developed an extensive system of underground stormwater storage facilities to manage extreme rainfall events and reduce the risk of flooding (24).

Background: Munich experiences frequent heavy rainfall that can overwhelm the city's drainage system. The city's historic center is particularly vulnerable to flooding (24).

Project Details:

• Number of Reservoirs: 13
• Total Capacity: 706,000 cubic meters (186 million gallons)
• Purpose: Temporarily store stormwater during heavy rains to reduce peak flows and prevent flooding (24).

Emergency Repair Integration:

1. Strategic Location: The reservoirs are strategically located throughout the city to intercept stormwater before it reaches vulnerable areas (24).
2. Automated Control Systems: The operation of the reservoirs is automated, with real-time monitoring and control to optimize performance during storms (24).
3. Combined with Green Infrastructure: The underground storage system is combined with green infrastructure such as permeable pavements and green roofs to enhance stormwater management (24).
4. Integrated with the Urban Landscape: Many of the reservoirs are located in parks and other public spaces, integrating them into the urban landscape (24).

Lessons Learned:

1. Multi-Purpose Infrastructure: The reservoirs serve multiple purposes, including flood control, water quality improvement, and even cultural events, demonstrating the value of multi-purpose infrastructure (24).
2. Public Education: The city has developed extensive public education programs to explain the importance of the system and how residents can help manage stormwater (24).
3. Collaborative Governance: The system requires collaboration between multiple city departments and agencies, highlighting the importance of effective governance structures (24).
4. Long-Term Maintenance Planning: Munich has developed comprehensive maintenance plans to ensure the long-term effectiveness of the system, including regular cleaning and inspection (24).

4.1.3 Hamburg, Germany: Integrated Urban Water Management

Hamburg has implemented an innovative approach to urban water management that integrates stormwater management with other water uses and environmental objectives (41).

Background: Hamburg is located on the Elbe River and faces challenges from both river flooding and urban stormwater (41). The city has a mix of combined and separate sewer systems, with approximately 40% of the city served by combined sewers (41).

Project Details:

• Integrated Water Cycle Management: The city manages all aspects of the water cycle holistically, from precipitation to discharge (41).
• Green Infrastructure Integration: The city has implemented extensive green infrastructure, including green roofs, permeable pavements, and urban forests (41).
• Sustainable Drainage Systems: These include bioswales, retention basins, and other features designed to manage stormwater at the source (41).
• Water Sensitive Urban Design: The city incorporates water-sensitive design principles into all new development (41).

Emergency Repair Integration:

1. Decentralized Management: The system is designed to manage stormwater as close to its source as possible, reducing the burden on centralized infrastructure (41).
2. Adaptive Management: The system is designed to adapt to changing conditions, including climate change (41).
3. Natural Drainage Principles: The system incorporates principles of natural drainage, mimicking the way water would naturally flow through the landscape (41).
4. Resilient Design: Infrastructure is designed to be resilient to extreme events while maintaining functionality under normal conditions (41).

Lessons Learned:

1. Holistic Approach: The integrated approach to water management has proven more effective and efficient than traditional siloed approaches (41).
2. Stakeholder Engagement: The success of the system depends on engagement with a wide range of stakeholders, including residents, businesses, and government agencies (41).
3. Phased Implementation: The system has been implemented in phases, allowing for learning and adaptation as the project progresses (41).
4. Performance Monitoring: The city has established comprehensive monitoring systems to track the performance of the system and identify opportunities for improvement (41).

4.2 American Case Studies

4.2.1 New Orleans, Louisiana: Post-Katrina Water System Recovery

The recovery of New Orleans' water supply and wastewater system following Hurricane Katrina in 2005 provides a comprehensive case study of post-disaster emergency repair and recovery (40).

Background: Hurricane Katrina, which struck in August 2005, caused catastrophic flooding in New Orleans, with approximately 80% of the city inundated (40). The city's water supply and wastewater systems were severely damaged, leaving hundreds of thousands of residents without clean water and proper sanitation (40).

Recovery Process:

1. Rapid Assessment: The National Institute of Standards and Technology deployed a team to assess damage to infrastructure, including water and wastewater systems (40).
2. Emergency Repairs: Priority was given to restoring essential services, including emergency repairs to pumping stations and treatment facilities (40).
3. Floodwater Removal: The city implemented a systematic approach to removing floodwater, including opening strategic breaches in levees to allow gravity drainage and using temporary pumps to remove remaining water (40).
4. Water Quality Management: During the drainage process, the U.S. Army Corps of Engineers used artificial aeration to increase dissolved oxygen levels in water discharged into Lake Pontchartrain (40).
5. System Restoration: Following floodwater removal, extensive repairs and replacements were carried out to restore the water supply and wastewater systems (40).
6. Upgrades for Resilience: The opportunity was taken to upgrade parts of the system to improve resilience to future events (40).

Key Challenges:

1. Extent of Damage: The sheer scale of the damage was unprecedented, requiring a massive mobilization of resources (40).
2. Health and Safety Risks: Floodwaters were contaminated with sewage, chemicals, and other hazards, creating significant health and safety risks for recovery workers (40).
3. Logistical Complexity: Coordinating the recovery effort across multiple agencies and jurisdictions presented significant logistical challenges (40).
4. Resource Constraints: The recovery required a vast amount of resources, including personnel, equipment, and materials, which were in high demand across the region (40).

Lessons Learned:

1. Pre-Disaster Planning: The importance of comprehensive pre-disaster planning and preparedness was highlighted, including the need for clear emergency protocols and adequate resources (40).
2. Coordination and Communication: Effective coordination between different agencies and levels of government is essential for an effective recovery (40).
3. Public Communication: Clear and consistent communication with the public is critical during and after a disaster (40).
4. Resilience Upgrades: Post-disaster recovery provides an opportunity to upgrade infrastructure to higher standards, improving resilience to future events (40).
5. Environmental Considerations: The recovery process must consider environmental impacts, including water quality and ecosystem protection (40).

4.2.2 South Hanover Township, Pennsylvania: Emergency Storm Culvert Repair

This case study demonstrates the challenges and solutions involved in emergency repair of a storm culvert following severe damage (22).

Background: A minor sinkhole was observed adjacent to Knight Drive in South Hanover Township, which quickly developed into a major emergency repair project (22). Investigation revealed an 84-inch diameter corrugated metal pipe (CMP) approximately 50 feet in length running under the road, which was found to be deteriorated with visible soil at some joints (22).

Project Development:

1. Initial Assessment: The municipality initially considered various repair options, including coatings (ranging from 24,000 to 38,000), gunite, polyurea or polyurethane lining, and sliplining (22).
2. Exacerbating Events: The area experienced extreme weather events, including 7 inches of rain in 3 hours and subsequent hurricanes Irene and Lee, which caused further damage and accelerated the need for action (22).
3. Design and Permitting: As conditions worsened, design and permit applications were expedited (22).
4. Comprehensive Solution: Given the severity of the damage and the need for a long-term solution, a comprehensive repair approach was adopted (22).
5. Final Implementation: The project was successfully completed, with specific details of the implementation documented in the project report (22).

Key Challenges:

1. Rapidly Escalating Damage: What began as a minor issue quickly evolved into a major emergency due to extreme weather events (22).
2. Environmental Constraints: The project had to be implemented while protecting the surrounding environment, particularly water quality (22).
3. Technical Complexity: The repair required specialized knowledge and equipment to ensure structural integrity (22).
4. Resource Mobilization: The emergency nature of the project required rapid mobilization of resources, including materials, equipment, and skilled labor (22).

Lessons Learned:

1. Comprehensive Assessment: Before selecting a repair method, it's essential to conduct a thorough assessment of the condition and needs of the system (22).
2. Contingency Planning: Having contingency plans in place for potential exacerbating events can help accelerate decision-making and implementation when conditions worsen (22).
3. Value of Expertise: The project benefited from the involvement of experienced engineers and contractors who could provide expert advice on the most appropriate repair methods (22).
4. Balancing Costs and Performance: While cost is a consideration, it's important to balance initial costs against long-term performance and durability (22).
5. Regulatory Considerations: Even in emergency situations, compliance with relevant regulations and permitting requirements is essential (22).

4.2.3 Chicago, Illinois: Tunnel and Reservoir Plan (TARP)

The Tunnel and Reservoir Plan (TARP) is one of the largest and most ambitious stormwater management projects in the United States, designed to reduce flooding in the Chicago area (25).

Background: The Chicago area historically experienced frequent flooding due to heavy rains overwhelming the city's combined sewer system (25). These floods caused property damage, disrupted transportation, and posed health risks (25).

Project Details:

• Scale: The project includes approximately 109 kilometers (68 miles) of deep tunnels and three large reservoirs (25).
• Purpose: The system is designed to capture and temporarily store stormwater and combined sewer overflows, preventing them from entering local waterways and causing flooding (25).
• Storage Capacity: The reservoirs have a combined storage capacity of over 3.5 billion gallons (25).
• Integration with Existing Systems: The system is integrated with Chicago's existing sewer system and wastewater treatment plants (25).

Emergency Repair Integration:

1. Strategic Design: The tunnels and reservoirs are strategically located to intercept stormwater and combined sewer flows before they cause flooding (25).
2. Real-Time Control: The system incorporates advanced real-time control technologies to optimize performance based on current weather conditions and system status (25).
3. Environmental Protection: The system is designed to protect water quality by preventing raw sewage from entering local waterways (25).
4. Resilience Features: The system is designed to withstand extreme weather events, including those expected due to climate change (25).

Implementation Timeline:

• Planning Phase: The project was first proposed in the 1970s and approved in 1972 (25).
• Construction Phase: Construction began in 1975 and is expected to be completed in 2029 (25).
• Phased Implementation: The project has been implemented in phases, with each phase providing incremental benefits (25).

Lessons Learned:

1. Long-Term Vision: The project demonstrates the value of long-term vision and planning in addressing complex urban challenges (25).
2. Public-Private Partnership: The project has involved collaboration between multiple public agencies and private sector partners (25).
3. Adaptive Management: The project has evolved over time in response to changing conditions and new technologies (25).
4. Community Engagement: Engaging with communities affected by the project has been essential for its success (25).
5. Cost Management: The project's total cost is estimated to exceed $4 billion, highlighting the importance of effective cost management in large infrastructure projects (25).

4.3 Comparative Analysis of European and American Case Studies

A comparison of the European and American case studies reveals both similarities and differences in approach and implementation (5).

Similarities:

1. Scale and Ambition: Both European and American case studies demonstrate significant scale and ambition, with projects costing billions of dollars and taking decades to complete (25).
2. Integration of Multiple Measures: The most successful projects integrate multiple measures, combining traditional infrastructure with innovative approaches (24).
3. Long-Term Planning: Both European and American projects emphasize the importance of long-term planning, even when implementation is phased over many years (25).
4. Resilience Considerations: Both regions are increasingly incorporating resilience to climate change and other future challenges into their stormwater management projects (25).
5. Environmental Protection: Projects in both regions emphasize protecting water quality and ecological health, in addition to flood control (24).

Differences:

1. Governance and Financing: European projects often involve stronger central government involvement and coordination, while American projects typically involve more decentralized governance and a greater reliance on public-private partnerships (25).
2. Technical Approaches: European projects tend to emphasize natural systems and integrated water management, while American projects often rely more heavily on engineered solutions (24).
3. Public Engagement: European projects typically involve more extensive public engagement from the earliest stages of planning, while American projects may engage the public later in the process (24).
4. Implementation Timeline: European projects often have longer planning and implementation timelines, while American projects may move more quickly from planning to construction, particularly in emergency situations (25).
5. Regulatory Frameworks: The regulatory frameworks governing stormwater management differ significantly between the two regions, with European frameworks typically being more prescriptive and American frameworks allowing for more local variation (25).

Best Practices from Both Regions:

1. Integrated Water Management: European approaches to integrated water management provide valuable lessons for American cities looking to adopt more holistic strategies (13).
2. Resilient Design: American approaches to designing for resilience, particularly in post-disaster recovery, offer valuable insights for European cities (29).
3. Public-Private Partnerships: American experience with public-private partnerships in large infrastructure projects provides useful models for European cities (25).
4. Environmental Integration: European expertise in integrating environmental considerations into stormwater management offers valuable lessons for American cities (41).
5. Adaptive Management: Both regions are increasingly adopting adaptive management approaches, learning from each other's experiences (25).

By combining the best practices from both regions, cities can develop more effective, efficient, and sustainable approaches to stormwater management and emergency repair (5).

5. Integrated Best Practices for Urban Drainage Emergency Repair

5.1 Integrating European and American Approaches

The most effective urban drainage emergency repair strategies integrate the best elements from both European and American approaches, creating comprehensive frameworks that address the full range of challenges (5). Key integration principles include:

1. Holistic System View: Adopting the European emphasis on integrated water resources management while incorporating American technical expertise and innovation (13).
2. Risk-Based Decision Making: Combining European risk assessment frameworks with American performance-based standards to develop robust decision-making processes (29).
3. Adaptive Management: Integrating European adaptive management principles with American technological innovation to create systems that can evolve as conditions change (58).
4. Green and Gray Infrastructure Integration: Combining European green infrastructure approaches with American engineering expertise to create hybrid systems that deliver multiple benefits (13).
5. Regulatory Flexibility with Clear Outcomes: Incorporating the European emphasis on clear environmental outcomes with the American approach to regulatory flexibility (25).
6. Public Engagement and Education: Combining European community engagement traditions with American public education approaches to build support for drainage system improvements (24).

5.2 Key Elements of Effective Emergency Repair Programs

Effective urban drainage emergency repair programs share several key elements, regardless of region (5). These include:

1. Comprehensive Risk Assessment: A thorough understanding of potential risks and vulnerabilities is essential for developing effective emergency repair strategies (29). This includes assessing both physical risks (such as flooding) and social and economic impacts (29).
2. Clear Prioritization Framework: A systematic approach to prioritizing repairs based on factors such as risk to public safety, environmental impact, and economic importance (69). This framework should be established in advance and regularly updated (69).
3. Pre-Developed Emergency Protocols: Well-defined protocols for responding to emergencies, including clear roles and responsibilities, communication channels, and decision-making processes (69).
4. Adequate Resources and Capacities: Sufficient resources, including personnel, equipment, materials, and funding, must be available to respond to emergencies effectively (40).
5. Integration with Routine Maintenance: Emergency repair programs should be integrated with routine maintenance and asset management programs to ensure continuity and build institutional knowledge (12).
6. Performance Monitoring and Evaluation: Systems for monitoring the effectiveness of emergency repairs and evaluating the overall performance of the program (83).
7. Continuous Improvement: Mechanisms for incorporating lessons learned from past emergencies and exercises into future planning and preparedness (40).

5.3 Recommendations for Implementing Integrated Emergency Repair Systems

Based on the analysis of European and American standards and case studies, the following recommendations are made for implementing effective urban drainage emergency repair systems (5):

1. Develop Integrated Emergency Repair Frameworks: Create comprehensive frameworks that integrate emergency repair with routine maintenance, long-term planning, and climate resilience strategies (5).
2. Invest in Advanced Monitoring and Early Warning Systems: Deploy advanced monitoring technologies and early warning systems to detect problems early and facilitate rapid response (5).
3. Build Multi-Hazard Resilience: Design emergency repair systems to address multiple hazards, including floods, droughts, and other climate-related risks (29).
4. Promote Cross-Sectoral Collaboration: Foster collaboration between different departments and agencies responsible for drainage systems, emergency management, public health, and urban planning (40).
5. Develop Standardized Emergency Repair Protocols: Create standardized protocols for common emergency repair scenarios, while allowing flexibility for unique situations (69).
6. Build Local Technical Capacity: Invest in building the technical capacity of local governments and service providers to design, implement, and maintain effective emergency repair systems (40).
7. Foster Public Awareness and Participation: Develop public education programs to increase awareness of drainage system issues and encourage public participation in maintaining system functionality (24).
8. Leverage Innovation and Technology: Embrace innovative technologies and approaches, including digital tools, artificial intelligence, and advanced materials, to improve the effectiveness and efficiency of emergency repair systems (5).
9. Implement Performance-Based Standards: Adopt performance-based standards that focus on outcomes rather than prescriptive methods, allowing for innovation and adaptation to local conditions (50).
10. Establish Sustainable Financing Mechanisms: Develop sustainable financing mechanisms to ensure adequate resources are available for emergency repairs and system upgrades (27).

6. Conclusion

Urban drainage systems face increasing challenges from climate change, urbanization, and aging infrastructure . Effective emergency repair systems are essential for maintaining the functionality of these systems and protecting communities from the impacts of extreme weather events (5).

This report has provided a comprehensive analysis of urban drainage emergency repair technology systems and standards in Europe and America, highlighting both similarities and differences in approaches (1). European standards emphasize integrated water management, environmental protection, and comprehensive system design, while American standards focus on technical performance, regulatory compliance, and innovative engineering solutions (9).

Key findings from this analysis include:

1. Integrated Approaches Are Most Effective: The most successful emergency repair programs integrate elements from both European and American approaches, creating comprehensive solutions that address the full range of challenges (5).
2. Technology and Innovation Are Critical: Advances in monitoring, control, and repair technologies are transforming emergency repair practices, allowing for more targeted and effective interventions (5).
3. Resilience Requires Systemic Thinking: Building resilience to future challenges requires a systemic approach that considers the entire drainage system and its interactions with the broader urban environment (29).
4. Coordination and Collaboration Are Essential: Effective emergency repair programs require close coordination between different agencies and levels of government, as well as collaboration with communities and other stakeholders (40).
5. Continuous Learning and Adaptation Are Key: The most successful programs incorporate mechanisms for continuous learning and adaptation, allowing them to evolve in response to new challenges and opportunities (40).

As cities worldwide continue to face the challenges of climate change and urbanization, the need for robust and adaptive emergency repair systems will only increase . By learning from the experiences of both European and American cities, and by integrating the best practices from both regions, cities can develop more effective, efficient, and sustainable approaches to stormwater management and emergency repair (5).

The ultimate goal should be to create urban drainage systems that are not only resilient to current challenges but also adaptable to future changes, ensuring the safety and well-being of urban communities for generations to come (5).

参考资料

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[2] Dimensioning of Sewerage and Drainage Systems in the Nordic Countries https://vannforeningen.no/wp-content/uploads/2015/06/2007_30320.pdf

[3] Storm Sewer Rehab Utilizing Trenchless Technologies https://ascelibrary.org/doi/10.1061/40507(282)32

[4] 城市排水防涝基础设施应对能力的三个阈值 Three thresholds for the bearing capacity of urban drainage and flood control infrastructures https://www.cqvip.com/doc/journal/919495361

[5] Advancing Urban Flood Resilience with Smart Water Infrastructure https://mdbartos.s3.us-east-2.amazonaws.com/publications/advancing_urban_flood_resilience.pdf

[6] Management and maintenance practices of storm and sanitary sewers in Canadian Municipalities https://www.iclr.org/wp-content/uploads/PDFS/Management_and_maintenance_practices.pdf

[7] Open storm: a complete framework for sensing and control of urban watersheds https://arxiv.org/pdf/1708.05172

[8] 城镇排水管渠检测、清淤与非开挖修复标准体系思考 Consideration of standard system for inspection,dredging and trenchless rehabilitation of municipal sewer https://www.cqvip.com/doc/journal/920637149

[9] Common and Challenging Questions in Water System Infrastructure Management https://www.researchgate.net/publication/268584549_Common_and_Challenging_Questions_in_Water_System_Infrastructure_Management

[10] Drones in urban stormwater management: a review and future perspectives https://www.tandfonline.com/doi/abs/10.1080/1573062X.2019.1687745

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[12] Earthquake recovery versus routine maintenance of the waste water network in Christchurch https://www.tandfonline.com/doi/pdf/10.1080/24705314.2016.1179499

[13] Toward the Sustainable Management of Urban Storm-Water https://journals.sagepub.com/doi/10.1177/1420326X07078854

[14] ASCE https://www.madcad.com/content/publishers/ASCE

[15] ASCE 45, 46, 47 https://ascelibrary.com/doi/book/10.1061/asce454647

[16] Urban Subsurface Drainage https://ascelibrary.org/doi/book/10.1061/9780784403235

[17] Policy statement 348 - Emergency plans for water supply https://www.asce.org/advocacy/policy-statements/ps348---emergency-plans-for-water-supply

[18] Compound Flooding Manual of Practice for Engineers https://convention.asce.org/program/compound-flooding-manual-practice-for-engineers

[19] Standard Guidelines for the Design (12-05), Installation (13-05), and Operation and Maintenance (14-05) of Urban Subsurface Drainage https://sp360.asce.org/personifyebusiness/Merchandise/Product-Details/productId/232121079

[20] Browse ASCE https://www.techstreet.com/products?publisher_id=32

[21] Emergency and Restoration https://www.entsoe.eu/network_codes/er/

[22] Coatings to Replacement – Case Study of Storm Culvert Repair--国外学术会议【掌桥科研】 https://m.zhangqiaokeyan.com/academic-conference-foreign_meeting-223559_thesis/0705015416797.html

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[24] 看看世界强国城市的血管:排水系统--湖北省住房和城乡建设厅 https://zjt.hubei.gov.cn/bmdt/ztzl/hbcjda/dxgx/201910/t20191028_81456.shtml

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[26] 一秒吸水 从此告别路面积水-抖音 https://www.iesdouyin.com/share/video/6976072382956014885/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=6976072494201441032&region=&scene_from=dy_open_search_video&share_sign=nMs18oq6fp5Vx0taWXeztul8Z3g3X2R3hHMbrS9eedk-&share_version=280700&titleType=title&ts=1754559638&u_code=0&video_share_track_ver=&with_sec_did=1

[27] 探秘伦敦45亿英镑“超级下水道”:70米深、25公里长的地下奇迹-抖音 https://www.iesdouyin.com/share/video/7473459801784110393/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7473459229748169512&region=&scene_from=dy_open_search_video&share_sign=bdQf3Y9ZFknh9Tz0.hCFUFa.UqzQHz9yy62ZuM9u1tw-&share_version=280700&titleType=title&ts=1754559638&u_code=0&video_share_track_ver=&with_sec_did=1

[28] 美国遭遇飓风袭击后的城市是如何重建的-抖音 https://www.iesdouyin.com/share/video/7430761717929413926/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7430761764960111372&region=&scene_from=dy_open_search_video&share_sign=SXOCjY0qnSNQRIMDYErjF166rsKr0NRVqLaDNcmUj9Y-&share_version=280700&titleType=title&ts=1754559638&u_code=0&video_share_track_ver=&with_sec_did=1

[29] Guidance on Structural Safety in Flood Areas: ASCE 24-24 https://www.asce.org/publications-and-news/codes-and-standards/asce-sei-24-24/

[30] SEI Standards Series: ASCE 7-22 & IBC 2024 Update https://www.asce.org/education-and-events/explore-education/on-demand-webinars/sei-standards-series--asce-7-22---ibc-2024-update

[31] On Demand Course: Risk Criteria for Safety Evaluation and Repair of Concrete Structures https://www.concrete.org/store/productdetail.aspx?ItemID=WCEU2205&Units=US_Units

[32] Updated ASCE 7-22 standard now available https://www.asce.org/publications-and-news/civil-engineering-source/article/2021/12/02/updated-asce-7-22-standard-now-available/

[33] ASCE 7-16 and Beyond https://www.structuremag.org/?p=12112

[34] Stormwater Management Technologies: Treatment Media https://www.epa.gov/emergency-response-research/stormwater-management-technologies-treatment-media

[35] National Menu of Best Management Practices (BMPs) for Stormwater-Post-Construction https://www.epa.gov/npdes/national-menu-best-management-practices-bmps-stormwater-post-construction

[36] Stormwater Maintenance https://www.epa.gov/npdes/stormwater-maintenance

[37] Using Green Infrastructure to Support Municipal Separate Storm Sewer System Program Compliance https://www.epa.gov/green-infrastructure/using-green-infrastructure-support-municipal-separate-storm-sewer-system

[38] Using Smart Growth Techniques as Stormwater Best Management Practices https://www.epa.gov/smartgrowth/using-smart-growth-techniques-stormwater-best-management-practices

[39] Summary of temporary construction sediment control techniques https://stormwater.pca.state.mn.us/index.php?title=Summary_of_temporary_construction_sediment_control_techniques

[40] Katrina飓风对新奥尔良市供排水和污水处理系统的影响及其启示-北极星环保网 https://mhuanbao.bjx.com.cn/mnews/20170901/847126.shtml

[41] 欧洲治水史-新民周刊 https://www.xinminweekly.com.cn/fengmian/2013/03/14/2210.html

[42] 【国外案例】德国伊萨河——自然化修复的世界级案例，每一处都值得深思|河道治理500例|上海欧保环境:021-58129802 http://www.hehuzhili.com/Article/gwaldgyshz_1.html

[43] 太久没排水了，导致水库的排水口被污泥堵住了，不过最后还是被冲开了-抖音 https://www.iesdouyin.com/share/video/7213017071981038882/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7213017159872678693&region=&scene_from=dy_open_search_video&share_sign=31dVlRcQkc4yLj7JBGnXTUW0nduDC_cpnproM5QoYr8-&share_version=280700&titleType=title&ts=1754559681&u_code=0&video_share_track_ver=&with_sec_did=1

[44] #郑州#暴雨#科普城市水灾中的真相，你真的知道吗？不要再被别人带节奏了！！@DOU+小助手 -抖音 https://www.iesdouyin.com/share/video/6990277921181076748/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=6990278054606146334&region=&scene_from=dy_open_search_video&share_sign=E.LpaHIbYE4JtH6c0esNViuIgatxdvDAh1xWdqO0tGU-&share_version=280700&titleType=title&ts=1754559681&u_code=0&video_share_track_ver=&with_sec_did=1

[45] 英语新闻听力 洪水之后的家园重建-抖音 https://www.iesdouyin.com/share/video/7527097126413798656/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7527097299840092954&region=&scene_from=dy_open_search_video&share_sign=UcbD1oGqMs1N9bKriKlbaRxzaOiRQj_LqNGdautJgKc-&share_version=280700&titleType=title&ts=1754559678&u_code=0&video_share_track_ver=&with_sec_did=1

[46] Codes & Standards https://www.asce.org/publications-and-news/codes-and-standards/

[47] America’s Infrastructure Improves to a C Grade on the ASCE’s 2025 Report Card https://www.jdsupra.com/legalnews/america-s-infrastructure-improves-to-a-6586575/

[48] Standard Guidelines for the Design of Urban Stormwater Systems, Standard Guidelines for Installation of Urban Stormwater Systems, and Standard Guidelines for the Operation and Maintenance of Urban Stormwater Systems https://ascelibrary.com/doi/book/10.1061/9780784408063

[49] ASCE/EWRI 45-05 47-05 https://webstore.ansi.org/standards/asce/asceewri450547

[50] Standard Guidelines for the Design, Installation, and Operation and Maintenance of Urban Stormwater Systems https://ascelibrary.com/doi/book/10.1061/9780784413319

[51] New ASCE standard transforms water security practices for the modern era https://www.asce.org/publications-and-news/civil-engineering-source/article/2025/01/09/new-asce-standard-transforms-water-security-practices-for-the-modern-era

[52] Drain and sewer systems outside buildings https://standards.iteh.ai/catalog/standards/cen/6a7b2fcb-4a39-4eb9-a98e-da291bd32926/en-752-2008

[53] DIN EN 752:2017 https://webstore.ansi.org/standards/din/dinen7522017

[54] BSI Standards Publication Drain and sewer systems outside buildings -Sewer system management https://pdfcoffee.com/bsi-standards-publication-drain-and-sewer-systems-outside-buildings-sewer-system-management-pdf-free.html

[55] EN 752:2017 https://shop.standards.ie/en-ie/standards/en-752-2017-346709_saig_cen_cen_792731/

[56] 原创论文|美国金县合流制溢流控制案例之技术与标准 - 中国城镇供水排水协会(中国水协)唯一官方网站 https://www.cuwa.org.cn/category/hangyeredian/5573.html

[57] 一､路面\n比｡请参考本文附件:排水沥青路面设计规范｡各部分(pdf) https://www.ctils.com/cms/article/file/download?path=Article/2021/01/07/16-58-4519834.pdf

[58] 值得借鉴:欧美国家构建城市未来污水管网方案_技术_新闻_交互式水专项成果公共服务信息平台 https://www.qiangdayun.com/news/show.php?itemid=31830

[59] ANSI/CAN IAPMO Z1349-2021 检测、监测或控制给排水系统的装置 标准全文 https://m.antpedia.com/standard/1893256905-1.html

[60] 国际标准 ISO/TS 24541:2020 EN 与饮用水供应、废水和雨水系统有关的服务活动 饮用水输水管网饮用水水质和运行参数连续监测系统实施指南 Service activities relating to drinking water supply, wastewater and stormwater systems — Guidelines for the implementation https://m.book118.com/html/2024/0711/5341302201011242.shtm

[61] 各国建筑法规-下水引流和防积水设计_lily http://m.toutiao.com/group/7531132256392380943/?upstream_biz=doubao

[62] 德国人对饮用水也太严苛了吧🫠-抖音 https://www.iesdouyin.com/share/video/7486305170788289850/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7486305144444160795&region=&scene_from=dy_open_search_video&share_sign=6r2c4juUzxm86aJO_fALjOXsK0CDBz53jpJ3W4UDtNA-&share_version=280700&titleType=title&ts=1754559713&u_code=0&video_share_track_ver=&with_sec_did=1

[63] CHAPTER 15.25 https://codelibrary.amlegal.com/codes/farrwestcityut/latest/farrwest_ut/0-0-0-2651

[64] Flood Resistant Design and Construction (24-24) https://sp360.asce.org/personifyebusiness/Merchandise/Product-Details/productId/318295190

[65] ASCE 24-Flood Resistant Design and Construction Standards https://www.asce.org/communities/institutes-and-technical-groups/structural-engineering-institute/committees/sei-board-of-governors/sei-technical-community-executive-committee/asce-24-flood-resistant-design-and-construction-standards

[66] Standard Guidelines for the Design, Installation, and Operation and Maintenance of Urban Stormwater Systems (45-16, 46-16, 47-16) https://sp360.asce.org/personifyebusiness/Merchandise/Product-Details/productId/233081211

[67] Standard Guidelines for the Design, Installation, and Operation and Maintenance of Stormwater Impoundments https://ascelibrary.com/doi/book/10.1061/9780784414262

[68] River Restoration Guiding Principles Task Committee https://www.asce.org/communities/institutes-and-technical-groups/environmental-and-water-resources-institute/committees/environmental-and-water-resources-institute/ewri-governing-board/technical-coordination-executive-committee/hydraulics---waterways-council/river-restoration-technical-committee/river-restoration-guiding-principles-task-committee

[69] Emergency Repair Services Sample Clauses https://www.lawinsider.com/clause/emergency-repair-services

[70] Emergency Maintenance WorkSample Clauses https://www.lawinsider.com/clause/emergency-maintenance-work

[71] Emergency Repairs Sample Clauses https://www.lawinsider.com/clause/emergency-repairs

[72] EMERGENCY RESTORATIONSample Clauses https://www.lawinsider.com/clause/emergency-restoration

[73] Emergency Service Request definition https://www.lawinsider.com/dictionary/emergency-service-request

[74] 提质增效背景下排水管网检测技术的应用与总结 https://bbs.co188.com/thread-10505890-1-1.html

[75] BSEN1610-2024下水道和下水道的建造和测试.pptx-原创力文档 https://m.book118.com/html/2024/1023/6135050225010234.shtm

[76] 中外对比:我国城镇排水管渠标准体系的思考_全国能源信息平台 http://m.toutiao.com/group/6898595383216177677/?upstream_biz=doubao

[77] 唐建国总工首次在国内系统性介绍德国排水机制-专栏-中国水网 https://www.h2o-china.com/column/1860_2.html

[78] 唐建国总工首次在国内系统性介绍德国排水机制-中国水网 https://www.h2o-china.com/news/354714.html

[79] 欧洲城市不内涝的秘密-抖音 https://www.iesdouyin.com/share/video/7405433702836096267/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7363266597861787664&region=&scene_from=dy_open_search_video&share_sign=S7Xba7rhn7AkGW11PoIqJYzLQK0AoXyHuFfckuivVlQ-&share_version=280700&titleType=title&ts=1754559742&u_code=0&video_share_track_ver=&with_sec_did=1

[80] #热点宝入口 被公知吹上天的欧洲排水系统效果如何？西班牙洪水-抖音 https://www.iesdouyin.com/share/video/7433631286687731001/?did=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&from_aid=1128&from_ssr=1&iid=MS4wLjABAAAANwkJuWIRFOzg5uCpDRpMj4OX-QryoDgn-yYlXQnRwQQ&mid=7314976193820264482&region=&scene_from=dy_open_search_video&share_sign=xK6QuE1CPFzF2Sc6kpd77iSKGtIfVSqEP45zziUhxxA-&share_version=280700&titleType=title&ts=1754559742&u_code=0&video_share_track_ver=&with_sec_did=1

[81] New addition to the ASCE/SEI 7-22 Standard protects buildings from a 500-year flood event https://www.asce.org/publications-and-news/civil-engineering-source/society-news/article/2023/05/25/asce-7-flood-loads-supplement

[82] 1200-Z Monitoring and Corrective Action Guidance https://www.portland.gov/bes/preventing-pollution/industrial-stormwater-permits-and-source-control-plans/monitoring-and

[83] Cost Effective Monitoring Strategies in MS4 Programs https://in-situ.com/en/news/cost-effective-monitoring-strategies-ms4-programs

[84] STORM WATER CONSTRUCTION TECHNICAL STANDARDS https://dnr.wisconsin.gov/topic/Stormwater/standards/const_standards.html

[85] Real-time monitoring and control of stormwater – meet the intelligent urban watershed https://www.xylem.com/fi-fi/making-waves/water-utilities-news/real-time-monitoring-and-control-of-stormwater--meet-the-intelligent-urban-watershed/

[86] Emerging stormwater treatment technologies (TAPE) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Stormwater-permittee-guidance-resources/Emerging-stormwater-treatment-technologies

[87] New Stormwater Engineering Design Standards https://www.oakgov.com/government/water-resources-commissioner/stormwater/stormwater-engineering-design-standards

[88] Stormwater monitoring https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring

[89] Drinking water, wastewater and stormwater systems and services https://www.iso.org/committee/299764/x/catalogue/

[90] Real-time pollution-based control of urban drainage and sanitation systems for protection of receiving waters https://webgate.ec.europa.eu/life/publicWebsite/project/LIFE20-ENV-FR-000179/real-time-pollution-based-control-of-urban-drainage-and-sanitation-systems-for-protection-of-receiving-waters

[91] MS4 Water Quality Monitoring https://mde.maryland.gov/programs/water/StormwaterManagementProgram/Pages/MS4-Water-Quality-Monitoring.aspx

[92] Stormwater https://www.isri.org/old-community-relations-resource-center/old-issues-and-response-resources/stormwater

[93] ISO/TS 24541:2020 https://www.iso.org/standard/74482.html

[94] Pacific Southwest (Region 9) NPDES Wastewater & Stormwater Permits https://www.epa.gov/npdes-permits/r9-npdes-wastewater-stormwater-permits

[95] NPDES Storm Water MSGP: Compliance Monitoring https://www3.epa.gov/npdes/pubs/comply.htm

[96] NPDES Storm Water MSGP: Analytical Monitoring https://www3.epa.gov/npdes/pubs/analyt.htm

[97] Smart Water Monitoring Systems with Tools.Valarm.net https://www.valarm.net/water/

[98] Fit for purpose stormwater quality monitoring https://storymaps.arcgis.com/stories/b970ef2863a041cdbc9095a040c89f25