Automatic excavation device for coal rock stratum in similar simulation experiment

Abstract

The invention provides an automatic excavation device for a coal rock stratum in a similar simulation experiment. The automatic excavation device comprises a cross beam, a sliding groove is formed in the cross beam, a sliding mechanism is arranged in the sliding groove, a lifting mechanism is arranged on the portion, extending out of the sliding groove, of the sliding mechanism, and a telescopic screw-in mechanism is arranged on the lower portion of the lifting mechanism. The device is convenient to operate, the experiment efficiency is improved, and starting of subsequent mining engineering is accelerated. The coal rock layer excavation is simulated by operating machinery, so that the automation degree is improved, the error rate is reduced, and the experiment time is convenient to control. Through mechanical excavation, the actions of propelling and stoping of the coal mining machine can be accurately simulated, the similarity between the experiment process and the field mining working condition is improved, and the experiment error is reduced. Errors caused by manual coal and rock stratum excavation are avoided, and potential safety hazards are reduced. In addition, the main body structure of the cross beam is not changed, the cross beam can still be used on all experiment tables, and the application range is wide.

Description

Technical field[0001]The present invention relates to geological rock formations similar simulation experimental devices, and more particularly to an automatic excavation device similar to coal rock layers in experiments.Background technique[0002]In the coal seam mining work, due to the underground of most coal mining, the dynamic changes and surface settlement rules caused by the campaign were difficult to intuitively monitor, and the cycle occupied by the on-site measurement, while consuming manpower, material resources And financial resources. Therefore, it is necessary to carry out the laying molding of coal rock layer similar materials by means of similar simulation experimental devices, and the detection and analysis of related experimental data is carried out, and the production practice is directed.[0003]For example, the disclosure of the disclosure of CN208239213U discloses a mine pressure and a rock layer control similar simulation test device, which includes a base and a ...

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Problems solved by technology

[0004] It can be seen that in the current coal seam similarity simulation test, the steps of simulating coal seam excavation are mainly completed manually, and there are the following problems: (1) The operation is extremely inconvenient, which is not conducive to improving the efficiency of the experiment, and the error rate is high, which easily leads to prolonging the experiment time, and the length of the experiment time directly affects the start-up time of the mining project and the progress of the project; (2) human errors are prone to occur, leading to the collapse of the coal rock model and the tipping of the test bench, which poses a safety hazard; (3) it cannot simulate coal mining Actions such as machine propulsion and mining are different from the mechanical coal mining conditions at the engineering site, and there are experimental errors

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