On 28 august, the city administration of zhengzhou organized a technical exchange on urban road crash prevention and control in the city-wide management system with the participation of a total of 150 management technicians from the county (city, district) city authorities and offices. The meeting was hosted by the municipal administration and hosted by the municipal engineering administration, and was directed by the deputy director-general of the municipal administration, lieutenant-general jaa, the chief of the valley construction service of the municipal facilities service, and the chief of the department of science and technology, menjian feng. According to the information received, from 23 to 29 august, the national science and technology week 2020 was marked by a series of nationwide scientific activities aimed at demonstrating the remarkable success of scientific and technological innovation in building a small and prosperous society that meets the needs of the people for a better life and beautiful china. In accordance with the unified deployment of the cop, the municipal administration organized the technical exchange on urban road crash prevention。
It is understood that this technical exchange will focus on the causes of urban road collapses and prevention techniques aimed at preventing road crashes, ensuring road safety in cities and providing professional guidance and solutions for urban management decision-making. During this meeting, mine detection techniques were the focus of discussions among participants. As early as 2016, the municipal authorities of zhengzhou were informed that they had begun to use radar technology to detect a wide range of hidden underground holes。
Road collapse is a potential danger in cities and poses a serious threat to the lives and property of people. The main causes of the land collapse include over-exploitation of groundwater resources, slow deformation of the ground-based earthforms as a result of urban construction work, and the erosion of the roadbank by the ageing of underground pipelines. Before the ground collapse, it was difficult to see through surfaces, and prevention was difficult. According to a lecture expert, shao xiaoyan, head of the beijing state electronics and longitude engineering co. Ltd., the method of mine detection is to launch high-frequency electromagnetic waves into the ground by launching antennas, receive electromagnetic waves reflecting back to the ground by antennas, reflect when different media interfaces are encountered during the transmission of underground media, determine the location, structure, shape and depth of the underground medium based on the characteristics of the received electromagnetic waves, such as wave shapes, amplitudes, etc., and detect mine detection systems to detect abnormalities such as underground holes, weak layers, estranges, etc. That cause road deformation and collapse prior to the problem。
On the scene, the network journalists saw that the radars in mine detection equipment and film films were completely different, that mine detection was carried on a vehicle and pushed by hand, that the radar antenna was sliding like a few small square logs, and that there were television monitors in the vehicle that reflected the pattern of road profiles in real time. According to the technical staff of the municipal administration of engineering: “mine surveying can be graphically compared to making `b super' roads. If there is an abnormal condition of the earth beneath a section, it can be clearly reflected on the image.” the application of mine detection and detection systems has greatly improved urban road safety management。
