A kind of mine three-dimensional physical simulation coal rock layer filling and mining method

Abstract

The invention discloses a three-dimensional physical simulation coal and rock stratum filling and mining method for mines. The three-dimensional physical simulation coal and rock stratum filling and mining method comprises the following steps: selecting appropriate geological analog for filling a three-dimensional physical model rack similar material, wherein the similar material is filled in a stirring manner at one step each time; leveling the similar material inside a filled space by using left and right transverse rods; tamping the filled similar material by using a small-size automatic walking tamping machine, paving mica layers after each time of filling and tamping, and mounting a movable double-clamping plate support device in the position of a filled coal seam; burying stress change monitoring points in different positions of a top plate in the model filling process, after filling is completed, drying in air and disassembling front and rear transverse plates of an experiment rack in sequence, and connecting a top plate stress monitoring lead, a movable double-clamping plate support device transmission lead and a data acquisition system; when the distance between double clamping plates of the movable double-clamping plate support device is reduced in a coal seam exploration position and thus a gap is formed between the double clamping plates and the top plate, drawing out the movable double-clamping plate support device in a coal mining speed ratio, and acquiring monitoring data in real time, thereby completing coal mining.

Description

technical field [0001] The invention relates to a coal seam filling and mining method for similar simulation experiments in mines, belonging to the field of experimental filling and mining methods, and in particular to a mine stereoscopic physical simulation coal seam filling and mining method. Background technique [0002] Due to the complexity of the underground engineering environment and the difficulty of on-site research, similar simulation experiments have become an important means of research on the movement of overlying rocks in underground mining. At present, many similar simulation experiments in mines use planar physical models for simulation. Although the method of loading and mining is simple, planar physical simulation experiments cannot actually represent the three-dimensional space environment of underground coal seam mining, and it is difficult to correspond to the actual engineering environment. In order to accurately simulate the environment of underground...

AI Technical Summary

Problems solved by technology

[0004] Based on the problems of uneven filling of coal and rock layers in mine stereoscopic physical simulation experiments, different strengths of simulated same rock layers, time-sensitive differences in coal seam mining, and difficulties in rational mining, the present invention proposes a mine stereoscopic physical simulation coal rock layer filling and mining method, aiming at Solve the technical problems of coal and rock bed filling and mining in the mine's three-dimensional physical simulation experiment, and realize the reasonable filling and effective mining of similar materials in the mine's three-dimensional physical simulation

Images