Method for detecting underground obstacle by using apparent conductivity and relative dielectric constant

Abstract

The invention provides a method for detecting an underground obstacle by utilizing apparent conductivity and a relative dielectric constant, which comprises the following steps of: measuring the apparent conductivity, delineating a horizontal position, reflecting the relative dielectric constant, determining the burying depth and determining the position of the obstacle, and directly measuring the distribution condition of the apparent conductivity in a work area by utilizing a ground conductivity meter. According to the method, the detection means is simple and rapid, and the apparent conductivity profile can be directly obtained to delineate the horizontal direction distribution condition of underground obstacles. Then, according to the horizontal position, a geological radar survey line is established for detailed exploration, and finally, the three-dimensional distribution condition of the underground obstacles is comprehensively determined in combination with a geological radar profile result. According to the invention, the working efficiency is improved, accurate three-dimensional positioning of underground obstacles is realized, and reliable guarantee is provided for later safety construction.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a method for detecting underground obstacles by using apparent conductivity and relative permittivity. Background technique [0002] In the process of urban construction, the existing building structure is often faced, which makes the construction of the basic part of the building structure more difficult. In addition, the influence of complex geological conditions, such as the influence of underground obstacles, makes the construction even more difficult. At the same time, it also faces Security Risk. Before the construction, the work area is usually excavated to remove the underground obstacles in the work area that affect the subsequent construction. However, blind excavation will not only destroy the actual geological conditions inside the work area, but also increase a lot of workload and invest more manpower and material resources. Therefore, the necessary engineering...

AI Technical Summary

Problems solved by technology

Generally speaking, only using ground radar to detect underground obstacles in a large-scale construction area has low work efficiency. When the distribution of underground obstacles in the construction area is unknown, the preliminary blind detection work needs to roughly locate the horizontal distribution of obstacles, and then in the It conducts detailed exploration to determine the buried state in the depth direction, and then infers the three-dimensional distribution of obstacles, which is of great significance for the later safe construction

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