European and American Land Recruitment to Deal with Urban Road Collapse
Release time: 2017-07-07
With the frequent occurrence of road collapse accidents, how to achieve the orderly development, utilization and management of underground space has become a problem that the relevant departments urgently need to solve.
Urban road collapses are endless
In recent years, urban road collapse accidents have occurred frequently, and some areas even have a few road collapses in one day. Even if people walk on "flat" roads, they have to be "step by step"!
At more than 2pm on November 3rd, at the intersection of Shili Road and Tongsha Road in Xili, Nanshan District, Shenzhen, the road collapsed and the ground collapsed into a big pit.
(The picture comes from the network)
On August 23, Lanzhou, the capital of Gansu Province, staged a "three collapses in one day", and pedestrians, expectant mothers, cars, and clay tankers fell into the pit.
On June 5, the pavement in front of a school in Nanning, Guangxi collapsed.
On May 21, a road surface collapsed in Ruijin City, Jiangxi Province, causing 4 cars parked on the road surface to fall into the pit.
Urban road collapse accidents will not only cause traffic jams, but also cause accidents involving car crashes and deaths, causing huge social impacts.
Urban pavement collapse accidents are mainly caused by hidden dangers of roadbed diseases. With the development of the city, the underground pipelines and subways under the road are becoming more and more dense. Deep foundation buildings such as underground parking lots around roads are also becoming denser. This has brought unprecedented hidden dangers to the safety of the roadbed.
Ground penetrating radar is a non-destructive testing technology that can be safely used on urban roads. The working conditions are loose, the traffic does not need to be closed, the adaptability is strong, the anti-jamming ability is strong, and the detection accuracy and resolution are high. In particular, the three-dimensional ground penetrating radar technology based on antenna array technology can quickly detect and evaluate the roadbed of urban roads, grasp the distribution and degree of roadbed diseases in time, and prevent the occurrence of vicious accidents such as road surface collapse. solution.
Norwegian 3D-Radar's GeoScopeTM 3D ground penetrating radar uses innovative frequency stepping radar technology and unique antenna array technology. The radar frequency scanning range is from 100MHz to 3GHz, which is completely set by the user according to different applications Depth measurement can meet the requirements of high resolution. Compared with traditional radar (no carrier frequency pulse and FM continuous wave), this technology mainly has the following advantages:
● The frequency components output by the radar signal source can be accurately controlled, and the energy of each frequency component is equal;
● By controlling the bandwidth of the signal sent by the radar host, it can effectively suppress noise and improve sensitivity;
● The radar signal is a frequency domain signal, which can facilitate the application of frequency domain signal processing technology for processing and analysis.
Norway ’s 3D-Radar ’s 3D ground penetrating radar provides urban road managers with a technical platform for on-site data collection and data analysis. Municipal roads can be used for:
● Underground cavity detection report;
● Depth report of pavement cracks;
● Evaluation of road medium density, water content, etc .;
● Road structure layer thickness report;
● Underground pipeline detection report;
For more information, please contact
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