Visualized grouting test device and test method of fractured rock mass

Abstract

The invention relates to a visualized grouting test device and a visualized grouting test method of a fractured rock mass. Due to the arrangement of a CT (Computerized Tomography) scanning device, a whole-course visualized grouting test on a true fractured rock mass can be realized; by adding a specific proportion of barium sulfate into cement slurry, the problem of contrast imaging of grouting slurry in the true fractured rock mass under CT scanning is solved; a test box and a grouting anchor rod are made of transparent materials, thereby further improving the accuracy of a scanning result; the test box is set to be of an inner cavity size-adjustable structure, test pieces with different sizes can be tested, and the influence of grouting pressure size on a movement diffusion rule of the slurry in a rock mass fracture is obtained by comparing visualized grouting test results of all groups of test pieces under the same grouting time; by remotely controlling the starting and stopping of a CT machine and the opening and closing of a grouting valve through an integrated control panel, non-intermittent matching between test piece grouting and CT scanning is realized, the influence on slurry diffusion caused by CT scanning intervals is reduced to the greatest extent, and the whole grouting test process can be visualized.

Description

technical field [0001] The invention relates to a grouting simulation test for rock sample fissures, in particular to a visual grouting test device and a test method for a roadway fissure rock mass, belonging to the field of rock engineering. Background technique [0002] As one of the most effective deformation control technologies for soft surrounding rock and broken surrounding rock, grouting reinforcement technology has been widely used and promoted throughout the country and the world, especially for the deformation control of cracked surrounding rock in deep tunnels. Effect. [0003] Mastering the flow and diffusion law of grout in surrounding rock fissures is of great significance for further optimizing grouting reinforcement parameters and improving grouting reinforcement effect. However, the development of domestic grouting support theory is far behind the practice of grouting support, especially in the research of grouting slurry flow and diffusion law and its cha...

AI Technical Summary

Problems solved by technology

However, no matter whether it is a single crack or a simple intersecting crack, there is a big difference from the actual complex crack network in the cracked rock mass, and the above two inventions use transparent materials to simulate the real rock mass, and the flow of the slurry in the transparent synthetic material It is also quite different from the real rock mass, and cannot simulate the flow and diffusion of grout in the real rock mass fissure network, and the test results are quite different from the actual ones

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