A monitoring method for hidden dangers of ground subsidence in shallow sand layers

Abstract

The invention relates to a method for monitoring hidden dangers of ground subsidence in shallow sand layers, and relates to the technical field of geological disaster detection and monitoring, which includes: after the hidden danger inspection, a vehicle-mounted three-dimensional ground penetrating radar is used to conduct a comprehensive survey of suspected hidden danger road sections to determine Distribution of hidden dangers; use vehicle-mounted 3D ground penetrating radar, pipeline detection, drilling verification, and 3D laser scanners to conduct detailed investigations on the development of hidden dangers, and determine the monitoring area for hidden dangers of ground subsidence; carry out horizontal deformation, Monitoring of water level, layered settlement of soil, and surface settlement; real-time monitoring of the deformation trend of the monitoring area for hidden dangers of ground subsidence by using a total station. The invention solves the problems that the existing monitoring method has low accuracy and is not suitable for popularization and practical application. The invention can accurately monitor and pre-warn multi-stage and multi-angle hidden dangers of ground subsidence in shallow sand layers, has high applicability, and is easy to popularize and apply.

Description

technical field [0001] The invention relates to the technical field of geological disaster detection and monitoring, in particular to a method for monitoring hidden dangers of ground subsidence in shallow sand layers. Background technique [0002] With the rapid development of urban construction and the large-scale development of underground space, the distribution of underground pipelines is dense, and the maintenance of old pipelines is weak. In shallow sand distribution areas, once underground pipelines leak, it is easy to produce quicksand and cause ground subsidence. the occurrence of disasters. Ground subsidence refers to a geological phenomenon in which the overlying rock layer is damaged, the rock and soil mass subsides or collapses in the underground cavity, and forms collapse pits of different shapes on the surface. In the subsidence area, there are often several cracks surrounding the subsidence pit, forming annular or arc-shaped cracks of different sizes. [00...

AI Technical Summary

Problems solved by technology

[0005] The above existing technical solutions have the following defects: most of them are applied in the macro region, but there are still certain limitations. For example, the subsidence prediction and forecast on the macro region is highly subjective in the selection of evaluation factors, weight assignment, etc., and its accuracy Not high; or the calculation method is too complicated, or the optical cable needs to be embedded in advance, the generalization is not high, and it is not suitable for promotion and practical application

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