Combined test device and test method for roadway surrounding rock stability

Abstract

The invention discloses a joint testing device and testing method for the stability of the surrounding rock of a roadway. The testing device includes a control host and a drill for testing the development degree of cracks in the surrounding rock on the inner wall of the drilled hole on the roof of the coal mine underground roadway or on the side of the roadway. A hole peeper, a loose ring tester for testing the loose ring of the surrounding rock around the borehole, and a ground radar detector for testing the stability of the surrounding rock on the roof of the coal mine underground roadway or on the side of the roadway; the test method includes steps: 1. Drilling; 2. Combined test of surrounding rock stability: single hole test and overall geological radar detection of the roadway; 3. Comprehensive analysis and judgment; 4. Joint test of surrounding rock stability in the next roadway segment; 5. Repeat steps multiple times Fourth, complete the joint test process of the surrounding rock stability of the coal mine underground roadway. The invention has the advantages of reasonable design, simple implementation and accurate test results, and can solve the problems of low precision existing in the existing single monitoring means and difficulty in accurately testing the stability of the roadway surrounding rock.

Description

technical field [0001] The invention belongs to the technical field of geotechnical and mining engineering, and in particular relates to a combined testing device and testing method for the stability of roadway surrounding rock. Background technique [0002] In order to ensure the stability of the roadway under the coal mine, the surrounding rock of the roadway will be tested with detection technology before the design of the roadway support. The stability of the surrounding rock is used for roadway support design. Nowadays, there are many technical means for monitoring mine surrounding rocks, such as acoustic emission, optical fiber, and resistance strain gauge, etc., but they all focus on a certain technical means. Due to the diversity and complexity of coal and rock formations, the large spatial dimensions In the process of on-site monitoring, there are many interferences from external factors, and many monitoring results are distorted. It can be seen that a single monit...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a roadway surrounding rock stability joint test device for the above-mentioned deficiencies in the prior art. The accuracy of the method is low, and it is difficult to accurately test the stability of the roadway surrounding rock

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