Since July, heavy rains have frequently "visited" Suqian, but citizens found that urban roads "stop raining and dry", and there is basically no waterlogging. One of the important reasons is that Suqian has conducted intelligent monitoring of waterlogging drainage. Since last year, 6,371 smart manhole cover sensors have been installed in the central urban area of Suqian, realizing real-time monitoring and early warning of manhole cover displacement, loss, liquid level overflow, and methane gas exceeding the standard. "When the liquid level is overflowing, the intelligent manhole cover background system will issue an early warning. We will send the situation to the relevant responsible department as soon as possible to request that the block drainage problem be quickly dealt with and timely feedback on the disposal situation." Suqian Digital City Management Supervision Command Center is responsible for People say. The lifeline system of water supply and drainage, gas, bridges and other urban operations is an important infrastructure to maintain the normal operation of the city and meet the production and living needs of the masses. This year, Jiangsu piloted the construction of urban lifeline safety projects in 7 cities including Nanjing, Wuxi, Suzhou, Xuzhou, Nantong, Suqian and Kunshan. In the pilot projects in various places, what is the specific construction of the urban lifeline safety project? How to build it? What effect should be achieved? The reporter from Xinhua Daily and Junction Point conducted an interview.

Create 7 risk scenarios and implement smart monitoring

Urban lifeline safety engineering is a complex system engineering. The reporter learned that Jiangsu requires the first phase of the project to focus on 7 risk scenarios including gas explosion, urban waterlogging, water supply burst, bridge collapse, road collapse, underground pipeline interaction risk, third-party construction damage, etc., using the Internet of Things, cloud computing, large-scale Data and other information technologies, carry out comprehensive supervision and intelligent monitoring of the operation of pipelines and other infrastructure, and improve the level of safety management. Nanjing has established a leading group for promoting the construction of urban lifeline safety projects, and the office of the leading group is located in the Nanjing Municipal Construction Committee. According to the relevant person in charge of the Nanjing Municipal Construction Committee, the urban lifeline safety project involves many industries. Combining with the actual needs of industry management and safety supervision, Nanjing plans to launch 7 risk scenarios for the first phase of the project this year. Demand is being raised, standards are set, and funds are being raised. The first draft of the "Comprehensive Supervision and Smart Monitoring" implementation plan for the Nanjing City Lifeline Safety Project is also being drafted. On the basis of 7 risk scenarios, Wuxi added 3 "optional contents" of Taihu Lake water quality safety monitoring, self-built house safety monitoring, and rail transit safety monitoring. "Wuxi promotes construction according to '5+2', '3+N'. '5+2' refers to the comprehensive start of 7 scenarios this year, focusing on 5 scenarios such as gas explosion, water supply burst, and bridge collapse.'3+ N' said that it will further expand on the basis of the three optional items according to the needs." said Xu Jin, director of the water supply and drainage department of Wuxi Municipal Bureau of Landscape Architecture.

Nantong also added "optional actions" according to the actual situation. Pan Weibin, deputy director of Nantong Municipal Bureau of Landscape Architecture, told reporters that street lamps and other lighting facilities have a large area, a long power transmission radius, and the complex environment where the facilities are located. Nantong has installed 895 automatic leakage detection systems for street lamps in the city to avoid accidents caused by untimely manual inspections. Nantong is also the first city in the country to promote the automatic leakage detection system for street lamps.

"Suqian has selected areas with dense personnel and high pipe network density as the pilot area. At present, a pilot area of about 59.5 square kilometers has been demarcated. Project demand research, preparation of project proposals, feasibility study reports, formulation of preliminary construction plans and other preliminary stages are being carried out. The work will lay a solid foundation for the comprehensive promotion of the construction of the urban lifeline project next year." Ding Li, head of the Urban Construction Department of the Suqian Housing and Urban-rural Development Bureau, introduced that according to emergency use, construction should be carried out first, while construction and use, Suqian first implemented six risk scenarios such as gas explosion and urban waterlogging. Construction, and then continue to promote the construction of road collapse and characteristic scenes, and promote the extension of the urban lifeline safety project from the city to the county to a larger scale. Find out the bottom line and consolidate the safety "floor" At the end of June, the Suzhou Municipal Bureau of Housing and Urban-Rural Development and the Suzhou Municipal Market Supervision and Administration Bureau jointly issued a document requesting the release of the city's gas pipeline inspection report. "This pipeline operation test covers the whole city. According to the test situation, we require that sensors must be installed at important nodes of the pipeline. This is also the process of 'finding the bottom line' of operating pipelines." said Han Bingguo, director of the Gas Management Office of Suzhou Housing and Urban-rural Development Bureau. The high-density deployment of sensors on the pipeline can supervise the operation of the pipeline in real time, realize gas leakage monitoring, timely alarm and disposal of potential safety hazards, and improve the safety supervision level of urban lifeline by means of information technology. This is just one of seven risky scenarios to be built in Suzhou. The "Suzhou City Lifeline Safety Project Pilot Construction Work Plan" has been reviewed and approved at the 8th executive meeting of the Suzhou Municipal Government. The Suzhou City Lifeline Project Supervision System will create "1 holographic brain + 7 risk eyes". Suzhou Industrial Park will be used as a pilot demonstration area to achieve full coverage of 7 scenarios including gas explosion. The 6 urban areas will push forward the construction of 2-3 scenarios for the differentiated pilot project based on the actual situation.

Creating risk scenarios and using information technology to supervise the operation of urban lifelines is the first and foremost step. Nanjing has organized and carried out a comprehensive and systematic survey of underground pipelines and municipal infrastructure, and implemented dynamic updates for the "same construction and same measurement" of new facilities, established a relatively complete basic database, and consolidated the "floor" of the city's lifeline safety data. Taking town gas as an example, Nanjing has 24 natural gas operating enterprises, 2.926 million users, an annual gas supply of about 1.53 billion cubic meters and a pipeline of about 10,000 kilometers. Nanjing has established a city gas safety and supply service system with "natural gas as the mainstay and liquefied petroleum gas as the supplement". "In terms of scale, Nanjing has many gas points, long lines, wide areas, and a large volume base, and safety risks still exist objectively." The relevant person in charge of the Nanjing Municipal Construction Committee said that the first phase of Nanjing's "smart gas" supervision platform has developed bottled gas. The LPG supervision function collects and establishes data information bases such as 49 gas companies, 312 gas stations, 276,000 bottled LPG users, and 1.22 million gas cylinders in use. This year, Nanjing started the construction of the second-phase natural gas supervision content, and has developed and completed the second-phase large-screen display effect and the second-phase work platform organizational structure.

At present, the pilot cities are vigorously promoting the pipeline "find the bottom line" and other work. Kunshan has carried out a city-wide digital stratigraphic project and the construction of a regional geotechnical survey digital system, providing technical support for the census of underground municipal infrastructure. Xuzhou is investigating and mapping the current situation of the city's underground pipelines, establishing a risk assessment system, and accelerating the construction of the city's lifeline safety engineering database and monitoring platform. Improve intrinsic safety with "Zhuge Liang beforehand" Wuxi has organized a census of underground pipelines in recent years, covering more than 800 roads in the city. The area of the underground pipeline network census is 382 square kilometers, the pipeline length is about 17,000 kilometers, and the investment is about 40 million yuan. Yuan. At present, Wuxi has basically completed the urban gas, water supply and drainage, municipal roads and bridges geographic information system and safety production scheduling system. Wuxi is also continuing to promote the safety of underground pipelines, focusing on the investigation and rectification of safety hazards such as insufficient safety distance between urban gas and water supply pipelines and third-party damage.

"Not only the creation and expansion of the seven risk scenarios, we will simultaneously promote the investigation and rectification of hidden dangers and the update of the old pipeline network. Smart monitoring is only a means. The safety management of the whole chain from the supply end to the user end will comprehensively improve the intrinsic safety of the city." Xu Jin said that in the next step, Wuxi will build a "1+1+N" integrated management system for urban lifelines based on the information of underground pipelines: establish Underground pipeline basic information system "one network"; establish urban lifeline operation management system "one network" to meet the needs of urban planning, construction, operation and maintenance, hidden danger investigation, emergency rescue and other work; professional ownership units rely on "two Network”, establish a “N-type” professional information application management system, accelerate the intelligent construction of gas, water supply, roads and bridges, etc., scientifically deploy early warning facilities, and establish a smart system. In Xu Jin's view, the application of terminal sensing equipment is very critical. To ensure high precision, long life, low power consumption, and reasonable investment The development of digital industry in our province. The scene is complete, digital empowerment, and pilot cities are making efforts. Pan Weibin said that Nantong will speed up the construction of the "smart system" in the next step, and at the same time carry out a comprehensive assessment of the safety risks of underground pipelines in urban areas, and improve the synchronization of data updates. Based on the city data sharing platform that has collected data from 115 departments, Suqian has established a data collection system that is fully connected vertically and fully covered horizontally. Ding Li said that Suqian is promoting the construction of a smart pipe network supervision platform, and plans to fully access relevant data such as gas, drainage, and water supply. In the next step, the platform will promote the extension of application scenarios in the direction of public safety, production safety, natural disasters, etc., and expand in the fields of domestic water hardness monitoring, black and odorous water quality monitoring and other fields in terms of functions.