Urban waterlogging warning system
Policy requirements for flood control
1. National policy
Notice of the General Office of the State Council on Strengthening the Governance of Urban Flood ControlGuo Ban Fa [2021]11]. The "Implementation Plan" proposes that the governance of urban flooding is related to the safety of people's lives and property, is not only a major people's livelihood project, but also a major development project. It is necessary to adjust measures to local conditions and cities, improve the city's flood control and drainage capacity, and use a comprehensive approach and systematic methods to solve urban flooding problems, to protect the safety of people's lives and property, and to provide a strong support for promoting the sustainable and healthy development of the economy and society.
2. Provincial policies
The 1288th proposal of the 14th Fujian Provincial People's Congress, second session, "On Strengthening the Construction of Natural Disaster Prevention Capabilities in the Whole Province"; "Anhui Province '14th Five-Year Plan' Urban Drainage and Flood Control System Construction Action Plan"; Notification of the Office of the People's Government of Henan Province on Issuing the "Henan Province Urban Flood Control and Drainage Capacity Enhancement Plan"; Implementing the requirements of Guizhou Province to issue the "Guizhou Province Urban Inland Flood Control Implementation Plan".
3. Local policies
Office of the People's Government of Dazhou District, Dazhou City Notice on Issuing the "Dazhou District Urban Flood Control Emergency Disposal Plan (Trial)"Office of the People's Government of Dongguan City on Issuing the "Dongguan City Road Flood Accumulation Defense Work Plan"Office of the People's Government of the Guangxi Zhuang Autonomous Region on Issuing the "Guangxi Urban Flood Control Treatment Implementation Plan" (Guizhou People's Government Office [2021] No. 66)
The current situation of urban waterlogging
China, as a rapidly developing country, is experiencing an accelerating urbanization process, which has gradually highlighted the issue of urban waterlogging. In recent years, due to the impact of global climate change and urbanization, the problem of urban waterlogging in China has become increasingly severe. Especially in summer, frequent heavy rain weather has led to waterlogging in many cities, severely affecting the lives of citizens and production activities.
1. Urban drainage system construction lags behind. As the scale of urbanization continues to expand, the construction of drainage systems in many cities lags behind the speed of urban development. The drainage facilities in some old residential areas and low-lying areas are not well-developed, and the drainage capacity is limited, making it difficult to meet the drainage demand under heavy rainfall weather.
2. Reduction in urban green space area. With the advancement of urbanization, a large amount of green space is replaced by hard ground, reducing the natural infiltration and detention space for rainwater. This makes it difficult for rainwater to drain quickly during rainfall, which can easily lead to waterlogging.
Three, unreasonable urban planning and construction is also an important cause of urban flooding. In the process of urban planning and construction, the lack of full consideration for drainage systems leads to problems such as unreasonable layout of drainage facilities and insufficient drainage capacity.
Requirements analysis
1. Flood-prone monitoring points
1. Low-lying areas in cities and prefectures
These areas are usually located in the low-lying areas near rivers and lakes, or within cities, where the terrain is lower and more prone to becoming a collection point for rainwater.
2、Defects in drainage facilities
Including old urban areas and newly built areas, due to the unreasonable design, aging, blockage and other reasons of drainage facilities, it is prone to waterlogging.
3、Traffic artery
Intersections, transportation hubs, and other areas are prone to become flood-prone points due to heavy traffic and dense pedestrian traffic, and the pressure on drainage facilities. II. Monitoring Requirements 1. Real-time Monitoring and Early Warning The monitoring system should be able to continuously monitor key parameters such as water levels, rainfall, and drainage flow in the city, and predict potential risks of urban flooding based on this data. Timely issuance of early warnings can help relevant departments and residents take preventive measures in advance to reduce disaster losses. 2. Data Integration and Analysis The monitoring system needs to integrate data from different sources, including meteorological data, hydrological data, drainage system data, etc., to identify patterns and trends in the occurrence of urban flooding through data analysis, and provide support for decision-making. 3. System Reliability and Stability The monitoring system needs to have high reliability and stability, capable of withstanding severe weather and emergencies. At the same time, the system needs to have automatic backup and recovery functions to ensure the integrity and security of data.
4、Intelligence and automation
The monitoring system needs to have the characteristics of intelligence and automation, capable of automatically analyzing data, predicting risks, issuing early warnings, and automatically adjusting the operation state of the drainage system to achieve the best drainage effect. 5、Multi-department collaboration and information sharing The monitoring requires the collaboration and cooperation of multiple departments, including meteorology, water conservancy, urban management, transportation and other departments. Therefore, the system needs to support information sharing and collaboration between multiple departments, so as to better deal with urban waterlogging disasters.
Urban waterlogging monitoring system
1. System networking
The urban waterlogging (water accumulation) monitoring and early warning system is a set of monitoring and early warning systems developed and designed based on water level and rainfall sensors, image acquisition, LED early warning information display screen, Internet of Things and other technologies. The system realizes the monitoring, early warning and warning of water-related easy accumulation scenarios such as urban underpass tunnels, inland rivers, low-lying sections, pipelines, etc., to ensure that during rainfall, by marking the water line and related warning slogans, it can achieve early warning of water accumulation, avoid blind passage leading to vehicle stall, pedestrians and property being flooded, etc., and ensure personal and property safety.
2. Monitoring Points
Underpass Tunnel Monitoring
Low-lying area monitoring
Underground pipeline monitoring
Inner City River Monitoring
Three, monitoring station composition
Flood monitoring station
Waterlogging monitoring stations are mainly used in low-lying road areas, underpass tunnels and tunnels. At the same time, on-site early warning expansion can be carried out according to the actual situation and application requirements on site, such asLED waterlogging early warning, linkage control traffic lights to prohibit vehicle passage and other early warnings.
Open channel drainage monitoring station
The open channel drainage station is mainly applied in urban rivers, open channel drainage and other scenarios. At the same time, it can also be expanded with on-site early warning equipment according to the actual situation on site and application requirements, such as sound and light alarm, video surveillance boundary alarm and other early warning equipment.
Underground pipeline monitoring station
The underground pipeline monitoring station is mainly used in urban underground pipeline rainwater drainage manhole, sewage drainage manhole, rainwater settling pool and other scenarios. According to the characteristics of the manhole, it is not suitable to install a pole and provide municipal power, and a battery-powered pipeline remote terminal unit should be used; in the monitoring of the settling pool, it is possible to expand the linkage of the pump, etc.
Water quality monitoring station
Water quality monitoring stations are mainly used in urban industrial water discharge outlets, domestic water discharge outlets and other scenarios. Water quality monitoring sensors (water quality routine five parameters, organic content, chemical composition and other detection elements are selected according to the site).
Video monitoring station
The video surveillance station mainly cooperates with the image collection of various monitoring scenarios to directly visualize the current situation of the site environment. Generally, the video surveillance can be matched with the monitoring station to form a comprehensive integrated station to achieve data video superposition.
Smart Urban Waterlogging Management Platform
MobileAPP
Flood monitoring system
Monitoring system features
◆Smart Linkage
Set the corresponding parameters for urban waterlogging and flood prevention, and judge the arrival of urban waterlogging and flood in advance in case of bad weather, and link upLED to release information in real time, and warn locally while linking up the on-site drainage equipment to drain water in time, to avoid and delay the occurrence of urban waterlogging.
◆Map Location
The system supports map positioning, which can quickly find the site location through the map, combined with data tracking display, intuitively and dynamically observe and understand the relevant information of the terminal equipment, better manage and arrange the whole situation, and achieve the informatization of the system layout.
◆Flood warning
The system pre-enters the hydrological and rainfall data that have previously experienced waterlogging, scientifically calculates and processes the hydrological and rainfall information reported in real time, and predicts and issues early warnings in advance before the occurrence of waterlogging. It can also be connected to third-party systems, allowing the people and relevant units to obtain flood information more timely and prepare for emergency measures.
◆The report shows
The system software has the functions of map display, data storage, data query, data statistics, curve analysis, etc., and can be exported asEXCEL report or directly printed.
◆Universal Interface
The system adopts an open database structure design, with standard interface calls, to meet the data calls and sharing of third-party platforms, to achieve the maximum use of information.
◆Information diversity
Can connect multiple cameras to capture real-time images of the scene from multiple angles, and more combined with flexible and universalLED docking, to achieve immediate and diversified information.
◆Stable and reliable
The system adopts high-standard industrial-grade design, research and development, testing, and production, and has been strictly tested in a professional testing environment. It can fully cope with the complex and harsh environment of urban waterlogging sites, greatly reducing and simplifying the maintenance and after-sales work of the system.
Inland flood monitoring installation
Pipe network manhole monitoring
The main equipment of the pipeline monitoring station includes flow meters (Doppler radar flow meters, Doppler flow meters, radar flow meters, etc. are selected according to the actual site), remote terminal units, power supply systems (mains, solar power, etc. or dual power complementarity), lightning protection equipment, etc.
Road waterlogging monitoring
The main equipment of the waterlogging monitoring station includes a water level gauge (radar water level gauge, electronic water gauge, ground exploration water level gauge, etc. selected according to the actual site), a remote terminal unit, a power supply system (mains electricity, solar power, etc. or dual power supply complementarity), lightning protection equipment, etc.
Monitoring of tunnel underpass
The main equipment of the tunnel monitoring station includes a water level gauge (radar water level gauge, electronic water gauge, ground exploration water level gauge, etc. selected according to the actual site), a remote terminal unit, a power supply system (mains electricity, solar power, etc. or dual power supply complementarity), lightning protection equipment, etc.
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