Method of surrounding rock fissure detection in geotechnical engineering

Abstract

Disclosed is a method of surrounding rock fissure detection in geotechnical engineering, including the steps that firstly a plurality of detection holes are formed in rock mass according to a preset threshold; then an acoustic emission sensor with a Beidou module is arranged in each detection hole, and the communication connection between the Beidou module and a data acquisition terminal is realized; at last, the location of rock fissure in geotechnical engineering is determined based on the data collected by the data acquisition terminal, and on basis of the data, the dynamic curve of the rock fissure in geotechnical engineering is drawn, a rock fissure simulation model in geotechnical engineering is constructed, which realizes the analysis and prediction of rock fissure in geotechnical engineering. While realizing the visualization of test results, the invention improves the accuracy of prediction and analysis, and all governance measures can be simulated and analyzed, so that the targeted governance measures can be obtained.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering exploration, in particular to a method for detecting fissures in surrounding rocks of geotechnical engineering. Background technique [0002] In nature and practical engineering applications, there are cracks of different geometric shapes inside the rock mass, and there are filling materials with different physical properties and geometric sizes in most of the cracks. Generally, the filling medium is composed of weathering, tectonic and groundwater. Breccia, sand and other low-strength media with loose structure, irregular structure, large porosity, and easy deformation. [0003] The rock masses used in engineering construction are generally complex rock masses with fissures, and the fissures often contain a large amount of filling materials of different properties. After the caverns are excavated in the project, there are usually many filling fissures around them. The existence o...

AI Technical Summary

Problems solved by technology

[0005] The existing monitoring methods can only determine the location of the cracks in the detection holes, but cannot determine / predict the direction of the cracks between adjacent detection holes and the future development trend of the cracks, and the monitoring results are often fed back in digital form , poor visibility

[0006] At the same time, the current monitoring technology based on acoustic emission usually adopts the method of embedding the sensor in the borehole, which makes the sensor in the hole unrecoverable and the monitoring cost is too high

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