Office of the State Council: Focus on cities with serious waterlogging and speed up the implementation of waterlogging control

　　China News Service, April 25. According to the Chinese government website, the General Office of the State Council has recently issued the implementation opinions on strengthening urban waterlogging management (hereinafter referred to as the “Opinions”). The opinions put forward that it focuses on cities with severe waterlogging and key flood control cities in recent years. Carry out waterlogging management, comprehensively solve the chronic waterlogging problems, and properly handle the relationship between river basin flood control and urban flood control and drainage.

By 2035, the drainage and waterlogging prevention engineering system of each city will be further improved, and the drainage and waterlogging prevention capabilities will be more matched with the requirements of building sponge cities and resilient cities, and the phenomenon of urban waterlogging under the conditions of rainfall within the prevention and control standards will be eliminated.

Data map.

Photo by China News Agency reporter Ren Haixia

　　The opinion puts forward that we should adhere to both the prevention of external floods and the treatment of internal waterlogging, the simultaneous development of ecological and engineering measures, "high water discharge, low water discharge", and more use of natural power to drain water, and overall improve the level of urban waterlogging management.

Focusing on cities with severe waterlogging and key flood control cities in recent years, we will promptly carry out waterlogging management, comprehensively solve the chronic waterlogging problems, and properly handle the relationship between river basin flood control and urban flood control and drainage.

　　The opinions put forward work goals. By 2025, cities will basically form an urban drainage and waterlogging prevention project system of “source emission reduction, pipe network emissions, simultaneous storage and drainage, and emergency response to excess of standards” according to local conditions. The drainage and waterlogging prevention capabilities have been significantly improved, and waterlogging control work has been achieved Obvious results; effective response to urban waterlogging prevention and control standards, the old city can drain the water in time after the rain stops, the flood control and drainage capacity of low-lying areas has been greatly improved, and the waterlogging points that have seriously affected the order of production and life in history have been completely eliminated. The phenomenon of "looking at the sea in the city" no longer appears in the district; under the conditions of rainfall exceeding the urban waterlogging prevention standards, the functions of important municipal infrastructure such as the urban lifeline project will not be lost, and the safe operation of the city will be basically guaranteed; where conditions permit, the construction of sponge cities will be actively promoted.

　　By 2035, the drainage and waterlogging prevention engineering system of each city will be further improved, and the drainage and waterlogging prevention capabilities will be more matched with the requirements of building sponge cities and resilient cities, and the phenomenon of urban waterlogging under the conditions of rainfall within the prevention and control standards will be eliminated.

　　The opinion puts forward the systematic construction of the urban drainage and waterlogging prevention project system, including the construction and transformation of pipe networks and pumping stations.

Intensify the construction of drainage pipe network, gradually eliminate the blank area of ​​pipe network, and in principle, the new drainage pipe network should meet the upper limit requirements of the national construction standard as much as possible.

Renovate rain and sewage pipe networks that are prone to waterlogging problems and misconnections, repair damaged and function-failed drainage and waterlogging prevention facilities; promote rain and sewage diversion renovation according to local conditions, and if the conditions for renovation are not available, use interception, regulation and storage, etc. Reduce overflow pollution in the rainy season and improve rainwater discharge capacity.

In areas where the external water jacking causes poor self-drainage or the pumping capacity is not up to the standard, the pumping station should be retrofitted or added to increase the pumping capacity. Important pumping stations should be equipped with dual-circuit power supplies or backup power supplies.

Renovate water collection facilities such as rainwater inlets to ensure that water collection and drainage capabilities match.

Renovate auxiliary facilities such as rainwater outlets, interception wells, valves, etc., to ensure that the elevation connection and the flow-through section meet the requirements.

　　The opinions demand that to improve the management level of urban drainage and waterlogging prevention work, it is necessary to strengthen daily maintenance.

Implement the inspection, maintenance, hidden danger inspection system and technical regulations for safe operation of urban drainage and waterlogging prevention facilities, emphasize storage space maintenance and urban river dredging, and increase the frequency of clearing around construction sites, low-lying sections prone to waterlogging, and pipeline sections prone to siltation.

Before the flood, it is necessary to carry out comprehensive investigation and remediation of hidden dangers, dredging and maintaining drainage facilities.

Strengthen the prevention of safety accidents, prevent safety accidents such as manholes hurting people, and take safety measures to prevent backflow at the entrances and exits of underground spaces such as garages, basements, underpasses, and subways.

　　At the same time, improve the level of emergency management.

Improve the emergency plans related to urban drainage and waterlogging prevention, clarify the connotation of early warning levels, and implement the tasks, response procedures and disposal measures of all relevant departments.

Strengthen river basin flood and natural disaster risk monitoring and early warning, timely and accurately release dynamic information such as early warning and forecast according to responsibilities, and do a good job in urban traffic organization, evacuation and emergency evacuation.

Equipped with mobile pump trucks and other special flood control equipment and emergency supplies to quickly solve urban waterlogging as needed, and improve the material reserve, safety management system and call process.

Intensify the publicity and education of urban flood control and drainage knowledge, and improve the public's awareness of disaster prevention and avoidance and the ability of self-rescue and mutual rescue.

　　The opinions emphasized that the overall planning and promotion of urban waterlogging control work requires overall planning of project construction.

Strengthen the reserve and preliminary work of urban waterlogging control projects, accelerate the construction of a number of major projects, and achieve the completion of the project, the construction of the project, the construction of the project, and the reserve.

Strictly control the quality of the project, and establish a life-long responsibility system for the quality of urban drainage and waterlogging prevention facilities.

Integrate the construction and transformation of urban drainage and waterlogging prevention facilities with municipal construction, especially post-flood restoration and reconstruction, construction of sewage treatment facilities, and transformation of old urban communities, optimize the spatial layout and construction timing of various projects, and avoid repeated excavation, " Road zipper", "flowers everywhere."

Coordinate projects such as flood control and drainage, pollution control, and utilization of rainwater resources to avoid mutual adverse effects.

　　At the same time, it is emphasized to strengthen supervision and law enforcement.

Strictly investigate buildings and structures that illegally occupy rivers, lakes, reservoirs, mountain ponds, flood storage and detention spaces, and drainage channels.

Strictly implement the permit system for sewage discharge into the drainage pipe network to prevent the rain and sewage pipe network from being mixed and connected.

Investigate and punish the occupation, destruction, and illegal relocation of drainage and waterlogging prevention facilities in accordance with the law, as well as blocking rainwater outlets at will, dumping garbage, cement residues, and construction mud into rainwater facilities and inspection wells.

Strengthen the supervision and inspection of construction sites that easily affect the safety of drainage facilities, and eliminate potential safety hazards in a timely manner.