Automatic mining model test device and method for self-formed roadway without coal pillar

Abstract

The invention discloses an automatic mining model test device and method for self-forming roadway without coal pillars, which solves the problems of low accuracy and difficulty in simulating the core process of mining self-formed roadway without coal pillars in the prior art, can simulate mining conditions, and realize a The machine is multi-purpose. Its technical solution is: including combined reaction force device, flexible loading device, automatic mining roadway forming device, monitoring device and intelligent control center. The intelligent control center controls the flexible loading device and automatic mining roadway forming device and can receive and process the The data obtained by the monitoring device; the flexible loading device includes a loading cylinder, the loading cylinder is connected to the loading plate, and an adjustment layer and a force transmission layer are arranged at the end of the loading plate; the automatic mining roadway forming device includes a mining simulation device and a slit simulation device, and the mining simulation device can Simulate roadway excavation and working face mining; the cutting simulation device can cut the model body; the monitoring device is used to collect and store the images and data during the test.

Description

technical field [0001] The invention relates to the field of geomechanical model testing, in particular to an automatic mining model testing device and method for self-formed roadways without coal pillars. Background technique [0002] The long-wall mining method is a commonly used coal mining method at present. It needs to excavate two roadways and leave a section of coal pillar to mine a working face, which is easy to form a stress concentration area, large deformation of the surrounding rock, difficult to control, and cannot meet the requirements of deep Coal mining safety requirements, and coal pillars cannot be recovered after mining at the working face, resulting in waste of coal resources. Based on this, the mining technology of self-formed roadway without coal pillars is proposed. This technology makes the overlying strata in the goaf collapse along the cutting surface under the action of its own weight and mine pressure through the advance pre-crack cutting of the s...

AI Technical Summary

Problems solved by technology

Due to the influence of the size of the model test device, the geomechanical model test can only simulate a small part of the inclination length of the working face, which is inconsistent with the actual site, and the results have large deviations

[0006] (3) For the core technology of self-forming roadway mining technology without coal pillars, such as pre-splitting and cutting, it is difficult to realize the existing geomechanics model test equipment

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