Pavement collapse detection method

Abstract

The invention provides a pavement collapse detection method. The pavement collapse detection method adopts an L-band InSAR satellite radar and a double-frequency high-dynamic ground penetrating radar to be combined for use. The pavement collapse detection method comprises the following steps: S1, acquiring soil water content and humidity data of a pavement detection area by using an L-band InSAR satellite radar, and finding out a soil water content abnormal area after processing; and S2, using a double-frequency high-dynamic ground penetrating radar to collect the burying depth data of the underground target body in the soil water content abnormal region, and performing three-dimensional display on the real form of the underground target body after processing the data. According to the pavement collapse detection method, the underground water content can be detected and researched in a large range, underground hidden dangers can be rapidly and accurately analyzed, and a basis is provided for rapid early warning and quantitative regulation of road potential safety hazards.

Description

technical field [0001] The invention relates to the technical field of road collapse hidden danger detection, in particular to a road collapse detection method. Background technique [0002] With the increasing development scale of urban underground space resources, urban road surface disasters such as underground loosening, stratum disturbance, stratum uneven settlement, support stress changes and soil erosion continue to accumulate. In particular, underground water supply and drainage pipelines rupture and leak after aging, and then erode the roadbed to form cavities, leading to road subsidence accidents and posing a serious threat to people's normal travel. Therefore, large-scale and fine-grained detection and investigation of underground hidden dangers is an urgent need to solve current problems. [0003] The traditional ground leak detection method is mainly manual leakage detection, which has problems such as long cycle and low efficiency. At this stage, the detectio...

AI Technical Summary

Problems solved by technology

[0015] According to the above-mentioned published patents, the detection of road collapse by HDR ground penetrating radar is still at a qualitative level, and it cannot truly quantitatively interpret the size, position, shape and distribution of hidden dangers on the road surface, and cannot complete the refined detection of hidden dangers

[0016] In summary, there is an urgent need for a pavement collapse detection method to solve the problems existing in the prior art that it is difficult to complete a large-scale investigation of urban pavement collapse hazards and the problem of inability to complete the fine detection of hidden danger areas

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