Bolted rock mass long-term strength test system based on stress-seepage coupling effect

Abstract

The invention provides a bolted rock mass long-term strength test system based on a stress-seepage coupling effect. The system is used to solve the technical problems that a bolted rock mass long-termstrength test cannot meet the actual physical state of a bolted rock mass, the constitutive relation of the bolted rock mass long-term strength in a stress-seepage coupling environment is not clear and the like. The system comprises a pressurizing device, a hydraulic system and a strain detection device, the pressurizing device comprises a creepmeter, and a containing box used for containing a bolted rock mass sample is arranged in the middle of a workbench of the creepmeter. The hydraulic system comprises a water tank, the strain detection device comprises a computer, a strain gauge and a strain gauge, and the strain gauge is connected with the strain gauge and the computer. The system utilizes the characteristics that the stress provided by the creepmeter is stable, the error is small,etc., is combined with an autonomously designed hydraulic system, simulates the occurrence environment of the bolted rock mass in a tunnel engineering, provides a stress seepage coupling test environment, is high in test accuracy, good in effect, simple in structure, clear in working principle and low in cost, and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of rock engineering detection, in particular to a long-term strength test system for an anchored rock mass based on stress-seepage coupling. Background technique [0002] With the rapid development of my country's economy, the pace of infrastructure construction is also accelerating, and the number of tunnel projects such as subways, tunnels and mine roadways is also increasing day by day. Bolt support is an effective method of surrounding rock support, which has the advantages of simple construction, clear action mechanism, and high economical and applicable ratio. Therefore, bolt support is widely used in tunnel engineering. The stress-seepage coupling environment is the actual environment most tunnel projects face. As time goes by, under the long-term action of this coupling environment, the long-term strength of the anchored rock mass changes, which weakens the support effect of the anchored rock mass a...

AI Technical Summary

Problems solved by technology

[0003] Aiming at technical problems such as the fact that the long-term strength test of the anchored rock mass cannot satisfy the actual physical state of the anchored rock mass, and the constitutive relationship of the long-term strength of the anchored rock mass under the stress-seepage coupling environment is not clear, the present invention proposes an anchorage method based on the stress-seepage coupling effect. The long-term rock mass strength test system uses the creep meter to provide the characteristics of stable stress and small error, and combines with the self-designed hydraulic system to simulate the occurrence environment of the anchored rock mass in tunnel engineering, and provides a stress-seepage coupling test environment. The entire test The system cost is low and the effect is good; the invention provides a simple, stable and reliable test system for the detection of the real-time characteristics of the long-term strength of the anchored rock mass in the stress-seepage coupled environment

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