Coal discharge method at the bottom of the two-dimensional similar material test bench

Abstract

The invention discloses a method for putting coal at the bottom of a two-dimensional similar material test bench. The specific steps are as follows: S1: Connect the fixing holes on the front and rear sides of the bottom of the two-dimensional similar material test bench with support brackets, and place between the two support brackets Install multiple sets of coal discharge turning devices, and then lock the locking device; S2: The channel steels are respectively located on the corresponding support brackets, and the experimental similar materials are placed on the coal discharging turning devices; S3: Wait for the similar experimental materials to solidify and then remove the front groove Steel, excavate a coal seam of a certain width at one end of the two-dimensional similar material test bench, and then seal the front side of the similar material for the test with transparent plexiglass; S4: Open the locking device, and use a wrench to lock it on the rotating shaft in the coal turning device Coal discharge steel plate, the coal discharge steel plate of this application can control the size of the coal discharge opening, and can be closed immediately and quickly after coal discharge, thus effectively preventing the lateral leakage of top rock model debris and ensuring the experimental effect.

Description

technical field [0001] The invention belongs to similar material simulation experiments in the fields of mining engineering and geotechnical engineering, and in particular relates to a two-dimensional simulation experiment system for mining similar materials. Specifically, it is a coal-drawing method that can not only extract the simulated coal layer at the bottom, but also ensure that the simulated rock layer at the top does not cause abnormal damage during the simulated mining process. Background technique [0002] Similar simulation experiment is one of the scientific and effective research methods to solve underground engineering problems. Due to the continuous development of economy and technology, the problems raised by geotechnical engineering are becoming more and more complex and cumbersome. It is difficult to obtain accurate analytical solutions by mathematical methods, and only some assumptions and simplifications can be made to solve the problem, which brings so...

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Problems solved by technology

[0003] It turned out that during the experiment, the bottom coal seam had to be pulled out manually at intervals according to the mining program time. After the bottom coal seam was pulled out, the top simulated rock formation slowly collapsed. With the expansion of the scope, the collapsed rock formation debris will fall outside the simulation test bench, but the experiment requires that the fallen debris should exist in the test bench as a cushion, thus affecting the effect and accuracy of the entire experiment

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