Crack grouting visualization tester under complex conditions

Abstract

The invention discloses a crack grouting visualization tester under complex conditions, comprising a tester frame for testing, a crack sample grouting loading box, an axial loading mechanism, a tangential loading mechanism, a confining pressure loading mechanism, a hydraulic pressure loading mechanism, a pressure grouting system, a circulating water collection tester, and a visualization system.

Description

technical field [0001] The invention relates to a test device and a test method for a rock fissure grouting simulation test, in particular to a fissure radial radial flow visualization experiment device considering the influence of fissure dislocation under a complex stress state. Background technique [0002] In geotechnical engineering such as mining, water conservancy and hydropower, tunnels, and slope reinforcement, joint fissures have an important impact on the stability of rock mass engineering. On the one hand, cracks in rock mass are one of the important causes of water damage in underground engineering. On the other hand, the existence of cracks also greatly reduces the strength of rock mass. Filling the cracks by grouting can not only effectively prevent water damage in the project, but also improve the integrity of the surrounding rock, and the reinforcement effect on the broken rock mass is very obvious. During the grouting process, the diffusion law of the grou...

AI Technical Summary

Problems solved by technology

Due to the limitations of test conditions, especially in the aspects of confining pressure loading, controllable dislocation of fractures, penetration sealing means, and realization of visualization, there are still limitations in domestic research on rock fracture grouting diffusion tests and test methods under complex conditions. Relevant experimental equipment is still relatively lacking

[0004] In the prior art, the "grouting diffusion test device" discloses a grouting simulation experimental device, which describes the crack grouting diffusion test method, but it does not consider the stress state of the crack, crack deformation and relative displacement , crack contact surface roughness and other factors

Relevant experimental devices have no axial loading mechanism, tangential loading mechanism, or confining pressure loading mechanism, and cannot simulate crack grouting and hydraulic loading under complex conditions (including three-dimensional stress state of cracks, crack deformation, relative displacement of crack surfaces, etc.) The water pressure provided by the mechanism is relatively small, and it is impossible to conduct simulation research on the situation of crack grouting plugging under the condition of high-pressure flowing water, and it is impossible to realize the controllable relative displacement of the two crack surfaces. The simulation effect of the actual grouting situation on site is not ideal

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