Visual test device for penetration grouting of broken coal and rock mass and test method of visual test device

Abstract

The invention discloses a visual test device for penetration grouting of broken coal and rock mass and a test method of the visual test device. The device comprises a fully transparent grouting barrel, wherein the lower end of the fully transparent grouting barrel is connected with a base, a sealing pressure head and a hollow loading pressure head are arranged at the upper end, a sealing ring is arranged around the sealing pressure head, and an exhaust pipe and an exhaust valve are arranged at the top; an electric cement mixing station, a controllable high-pressure pneumatic grouting pump anda digital display multi-element information monitoring system are communicated with a grouting conveying hole and a base grouting hole in the base through a high-pressure-resistant grouting pipe and aflange plate; a high-speed video camera is used for observing the diffusion form and the whole process of slurry containing non-radioactive tracers such as alizarin red or carmine in the broken coaland rock mass in real time. The device and the method have the beneficial effects that the device is transparent and visible, reasonable in structure, simple to manufacture, low in cost, safe to operate and reliable to use.

Description

technical field [0001] The invention relates to a broken coal rock mass permeation grouting visualization test device and a test method thereof, belonging to the technical field of rock mass visualization tests. Background technique [0002] With the increase of energy demand and the continuous increase of mining intensity in the development of the national economy, shallow resources are decreasing day by day, and the mining depth of coal mines is increasing, and mines at home and abroad have entered the state of deep resource mining one after another. With the increase of mine mining depth, the deterioration of geological conditions, the increase of broken or loose coal and rock mass, the increase of original rock stress and mining stress and other factors intensified the intensity of mine pressure in the roadway, resulting in the softness or fragmentation of the surrounding rock of the roadway. At the same time, the anchorage of the anchor rod (cable) in the broken or loos...

AI Technical Summary

Problems solved by technology

At present, due to the influence of various factors such as test conditions and test objects, although the existing grouting test device can obtain parameters such as grouting pressure, grouting volume, and diffusion range to a certain extent, due to the existing The slurry test device is basically a closed device made of high-strength steel, and it is impossible to observe the flow form and diffusion process of the slurry inside the broken coal and rock mass in real time; Osmotic compaction or high-pressure split grouting of the grouting pipe will cause uneven spread of the grout, easy plugging and grouting

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