Pre-drilling in-situ rock mass combined measurement device and measurement method

Abstract

The invention provides a pre-drilling in-situ rock mass combined measurement device and measurement method. The device comprises an auxiliary device, a shearing measurement device, a compression measurement device and an adapter, wherein the auxiliary device is used for providing a power source to the shearing measurement device and the compression measurement device, and processing acquired measurement data; the shearing measurement device is arranged at the lower end of the compression measurement device; and the adapter is arranged at the top end of the shearing measurement device, and is arranged in the compression measurement device. Therefore, the device can be used for measuring the shear strength and deformation modulus of rock mass at the same time, and measuring the tensile strength of the rock mass; sufficient power can be applied to the measurement device by loading a hydraulic cylinder, so that the measurement device is applicable to parameter measurement of soft stratum engineering and hard rock stratum engineering, and therefore, safe and reliable measurement device and measurement method are provided to the field of mine roadway engineering.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering investigation, in particular to a pre-drilled mine in-situ rock mass combined measurement device and measurement method. Background technique [0002] In the field of geotechnical engineering investigation, the shear strength, deformation modulus and compressive strength of rock and soil are important parameters for evaluating the stability of rock and soil structures. Especially in the control and treatment of surrounding rocks in mine roadways, with the continuous increase of mining scale and mining depth, mining conditions continue to deteriorate, the geomechanical environment of mine roadways is becoming more and more complex, underground engineering disasters occur frequently, and the stability control of roadway surrounding rocks Therefore, being able to correctly and reasonably evaluate the stability of surrounding rock in mine roadways can effectively prevent the occurrenc...

AI Technical Summary

Problems solved by technology

However, the existing in-situ test methods have too many test items and cannot obtain the shear strength and deformation modulus of rock and soil at the same time, making the evaluation of the original state index of rock and soil too one-sided

For example, the static load test is applied to the soil test, and the mechanical parameters of the soil can be obtained by bringing the measured data into the empirical formula to calculate; the cross plate shear test can only measure the shear strength of soft soil, and cannot describe the Mechanical properties of soil mixture; side pressure test can only measure the curve of pressure and rock volume change, but cannot obtain the shear strength of rock mass

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