Method for detecting soil mass cracking depth and detection device

Abstract

The invention discloses a method for detecting soil mass cracking depth. The method comprises the following steps: distributing paired electrodes in layers in a soil mass to be detected; respectively measuring conductivity values among the paired electrodes in each layer of the soil mass by using a conductivity meter; drilling and irrigating among the paired electrodes in each layer of the soil mass, and measuring the conductivity values among the paired electrodes regularly by the conductivity meter; drawing curve graphs of soil mass conductivity values in different moments along with depth variation according to the measured conductivity values between each pair of the electrodes before and after irrigating; and calculating the cracking depth according to the variation conditions of theconductivity values, wherein if the conductivity value has large variation amplitude, the cracking of the depth is more developed, while the conductivity value has small variation amplitude, the cracking of the depth is finely developed. The detecting method cannot destroy the internal structure of the soil mass, and has higher accuracy of the detecting result. The invention also discloses a soilmass cracking depth detecting device.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering parameter detection, in particular to a method for detecting the depth of soil fissures. Background technique [0002] Quantitative research on internal cracks in soil generally adopts analytical methods in the early stage of research, and uses engineering mechanics (such as elastic theory, fracture mechanics, etc.) to solve the distribution, depth, opening and elongation of expansive soil cracks, as well as the The strength and deformation properties of the surrounding soil. However, the development of cracks inside the soil is not in one-to-one correspondence with the development of cracks on the surface. The analytical method must contain many assumptions and simplifications, and the accuracy of the results is still difficult to verify. [0003] In addition, the method of using broken soil to study the depth of soil cracks destroys the internal structure of the soil, and once the soil...

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Problems solved by technology

However, the development of cracks inside the soil is not in one-to-one correspondence with the development of cracks on the surface. The analytical method must contain many assumptions and simplifications, and the accuracy of the results is still difficult to verify.

[0003] In addition, the method of using broken soil to study the depth of soil cracks destroys the internal structure of the soil. Once the soil is broken, subsequent tests cannot be carried out.

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