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

A technology of relative permittivity and underground obstacles, applied in the field of building construction, can solve problems such as low work efficiency, and achieve the effect of improving work efficiency, accurate three-dimensional positioning, and reliable guarantee

Pending Publication Date: 2021-11-26
天津市勘察设计院集团有限公司
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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 ...

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

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Embodiment

[0056] 1. According to the conditions of the construction work area, first use the earth conductivity meter to carry out area blind detection, and obtain the distribution of plane apparent conductivity through data processing; the earth conductivity meter can quickly and non-contactly measure the underground conductivity, and can directly generate earth apparent conductivity Conductivity planar imaging results. Area-based blind detection usually adopts the full coverage mode according to the size of the work area. In this example, the ground conductivity is measured in the form of continuous measurement, and other projects can adopt spot measurement or continuous measurement according to the actual situation. In the actual work area, there may be some abandoned buildings on the ground, which need to be detoured, such as figure 2 As shown; the earth conductivity planar imaging method uses the CMD-Explorer earth conductivity meter of the Czech GF company, adopts the vertical d...

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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...

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Application Information

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IPC IPC(8): G01V3/08G01V3/12
CPCG01V3/081G01V3/12
Inventor 吴宇豪崔亚彤李金伟张春晓宗博谭永华蔡克俭杨金瑞
Owner 天津市勘察设计院集团有限公司
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