The city lifeline ensures safe operation

"One network management" lifeline

Monitoring equipment such as level, acceleration sensor and strain sensor are installed under the viaduct bridge body. Once serious congestion occurs on the viaduct, causing safety problems such as bridge partial load, the monitoring equipment will issue an alarm. The monitoring equipment under the viaduct can also monitor various early warning events such as vehicle impact, support anomaly and expansion joint anomaly. The gas sensor is installed in the gas valve well on the surface, and once the combustible gas is detected, the sensor will immediately alarm.

Viaduct monitoring equipment and gas sensors are all monitoring facilities installed by Hefei City in promoting the lifeline safety project of urban infrastructure. It is understood that Hefei is a pilot city for the urban infrastructure lifeline safety project. Hefei's intelligent urban lifeline safety operation monitoring system covers eight fields: gas, bridge, water supply, drainage, heat, fire protection, water environment, and integrated pipeline corridor, and systematically builds a intelligent urban lifeline safety operation monitoring system. Up to now, about 85,000 sets of front-end sensing equipment such as gas, Bridges and water supply have been deployed, covering 137 Bridges and 7,316 kilometers of pipelines. The data of the front-end sensing equipment is uniformly transmitted to the safe operation monitoring center of Hefei Urban Lifeline Project. Once the data is abnormal, the monitoring center can quickly deal with it.

The person in charge of the Hefei Urban and Rural Construction Bureau said that since the operation of the system, the risk investigation efficiency has increased by about 70%, the accident rate has decreased by about 60%, and the city's "lifeline" has become a "safety belt" for development. The urban infrastructure lifeline safety project has realized the fundamental transformation of urban safety operation management from invisible to visible, from investigation and disposal after engagement to early warning in advance, from passive response to active prevention and control, significantly improved risk prevention and control capabilities, and continued to improve urban safety resilience.

The lifeline safety project of urban infrastructure, which will soon be fully launched, is an important part of urban renewal and the construction of new urban infrastructure. Ni Hong introduced that in the process of promoting the project, China will carry out a general survey of urban infrastructure, establish an urban infrastructure database covering the ground and underground, identify the risk sources and risk points of urban infrastructure, and compile a list of urban safety risks. Promote the construction of supporting iot intelligent sensing equipment, and gradually realize the comprehensive perception, automatic collection, monitoring and analysis of the operation data of urban infrastructure lifeline, and early warning and reporting; Accelerate the integration of urban infrastructure supervision information systems, build a comprehensive urban infrastructure safety operation supervision platform on the urban operation management service platform, and promote the operation of urban infrastructure lifeline "one network management"; We will improve the procedures and methods for emergency response to risks and hidden dangers, fulfill our responsibilities, establish and improve working mechanisms, and effectively prevent and defuse risks.

Tamped digital base

The urban infrastructure lifeline security project is supported by information technologies such as the Internet of Things, cloud computing, and big data to build monitoring Internet of Things, establish a monitoring operation system, and form core capabilities such as regular monitoring, dynamic early warning, accurate traceability, and collaborative disposal. To realize scientific prevention of major safety risks of urban infrastructure lifeline such as gas explosion, bridge collapse, urban waterlogging, pipe network leakage, road collapse, and urban fire.

In the construction of lifeline safety engineering of urban infrastructure, the construction of digital base map is an important premise. Shanghai has focused on strengthening the collection and application of urban infrastructure operation data, continuously promoting the construction of urban management theme databases, and constantly consolidating the digital base for infrastructure operation safety supervision. According to the relevant person in charge of the Shanghai Municipal Housing and Urban and Rural Construction Management Committee, Shanghai relies on the urban information model, integrates a number of technologies such as building information model, geographic information system and Internet of things, promotes the "one map convergence" of urban infrastructure element information, and forms a three-dimensional base map of the fine work information platform of urban management. Basically realized the overall construction of the digital base map of Shanghai's urban infrastructure lifeline.

On the basis of finding out the bottom number, the application of relevant technologies and digital monitoring system are important supports for digital intelligent management. Chengdu ensures the safety of bridge operation through digital and intelligent management. In Chengdu, the proportion of large overpasses and viaducts is high, and the operation environment of Bridges is complex. Some old Bridges have entered the period of disease occurrence and performance degradation, and Bridges are also faced with the risk of natural disasters such as earthquakes and floods. To this end, Chengdu adopted sensor testing, network communication and data processing technologies to build five sub-systems, such as structural stress, bridge site water level, pier settlement, collision warning and vehicle overload, to obtain real-time bridge operation data and track and evaluate the bridge safety level

The practice shows that the monitoring system plays an important role in bridge security. The digital intelligent management can accurately locate the hidden dangers and causes of bridge safety. For example, the digital monitoring system has recorded the evolution process of the lateral "creep" of the curve beam of the overpass ramp, alerted the abnormal development situation, and timely prompted the beam body to correct the deviation; When the city encounters heavy rainfall, the special monitoring system for bridge water level gives timely warning, and the monitoring personnel have mastered the danger of the bridge girder sealing hole in advance, which has gained precious time for flood prevention and rescue

Risk disposal is a key step to ensure the safe operation of the lifeline of urban infrastructure. According to the relevant person in charge of the Hefei Urban and Rural Construction Bureau, Hefei will push the early warning information to the competent industry departments and transport management enterprises through the monitoring center in the first time, and the leading industry departments will coordinate the risk disposal in the first time, forming a new emergency response mechanism of multi-department linkage, which effectively ensures the safe operation of the urban lifeline infrastructure. The timeliness and standardization of risk monitoring and early warning have been improved.

Create a security industrial cluster

The lifeline safety project of urban infrastructure is not only related to the protection of people's lives and property, but also can drive the development of related industries. In Hefei City, the urban safety industry has become a key industry, which has produced good economic benefits while ensuring the safe operation of the city.

It is understood that Hefei will take the urban safety industry as a key industrial chain, and set up a leading group led by the mayor to promote the development of the urban safety industry to promote industrial development and demonstration and promotion. Hefei City has also formulated a three-year action plan for the development of urban safety industry, established a special industrial fund with a total scale of 1 billion yuan, and built a "fund + industry" urban lifeline promotion model. Establish City Lifeline Industry Group Company, focus on the data cloud platform, monitoring services, ecological cultivation and other core business of city lifeline safety engineering, build an industrial Internet platform for government, enterprises and families, export city lifeline technology, products, programs and services, and accelerate the industrialization of city lifeline.

The establishment of industrial group company is a beneficial exploration in Hefei City to promote the urban lifeline safety project, which is conducive to the sustainable promotion of urban lifeline safety project and provides a reference experience for other cities to promote the infrastructure lifeline safety project. According to reports, the city lifeline Industry Development Group is an Internet platform enterprise in the city lifeline safety industry jointly initiated by Anhui Province, Anxin Technology, Tsinghua University, Jingdong Technology, and iFlytek.

Based on the technologies and products accumulated by Hefei Institute of Public Security of Tsinghua University in the field of urban security, Urban Lifeline Industry Development Group fully integrates 5G, Internet of Things and other new generation information and communication technologies, focusing on the core business of urban lifeline security cloud network integration platform, monitoring and early warning services, industrial ecological investment, etc. To provide a high level of science and technology and industrial supply for the safety of urban lifeline.

According to Yuan Hongyong, executive vice president of the Hefei Institute of Public Safety of Tsinghua University, after about three years of trial and error grinding, the Hefei Institute of Public Safety of Tsinghua University has broken through a series of key technologies, such as gas detection technology, water supply detection technology, heat supply detection technology, and these technologies have good results after application, and then promoted in Anhui province. At present, nearly 60 cities across the country are piloting the application.

With the lifeline safety project of urban infrastructure as a link, the urban security industry gathers many professional enterprises. For example, Tianze Zhilian Technology Co., Ltd. is a research achievement conversion unit of Hefei Institute of Public Safety of Tsinghua University, focusing on the development of advanced technologies and products in the field of fire protection, combining fire protection technology with modern technologies such as the Internet of Things, big data, cloud computing and artificial intelligence, integrating industrial chain resources, and providing intelligent fire safety solutions for governments, enterprises and families. Hefei Qingxin Sensor Technology Co., Ltd. is specialized in R&D, production and sales of domestic high-end sensor chips and sensors, providing basic chip and device support for urban lifeline security sensing.