Coal-pillar-free self-roadway-forming automatic mining model test device and method

Abstract

The invention discloses a coal-pillar-free self-roadway-forming automatic mining model test device and method, solves the problems of low accuracy and difficulty in simulating a coal-pillar-free self-roadway-forming mining core process in the prior art, can simulate mining conditions, and realizes multiple purposes. According to the technical scheme, the devicecomprises a combined counterforce device, a flexible loading device, an automatic mining and roadway forming device, a monitoring device and an intelligent control center, wherein the intelligent control center controls the flexible loading device and the automatic mining and roadway forming device and can receive and process data obtained by the monitoring device; the flexible loading device comprises a loading oil cylinder, the loading oil cylinder is connected with a loading plate, and an adjusting layer and a force transmission layer are arranged at the end part of the loading plate; the automatic mining and roadway forming device comprises a mining simulation device and a kerf simulation device. The mining simulation device can simulate roadway tunneling and working face mining. The kerf simulation device can be used forcutting amodel body; the monitoring device is used for collecting and storing images and data in the test process.

Description

technical field [0001] The invention relates to the field of geomechanics model tests, in particular to a model test device and method for automatic mining of self-forming lanes without coal pillars. Background technique [0002] The longwall coal mining method is currently a commonly used coal mining method. It needs to excavate two roadways and set up a section coal pillar in one working face. It is easy to form a stress concentration area, the deformation of the surrounding rock is large, and the control is difficult. Coal safety mining requirements, and coal pillars cannot be recovered after mining at the working face, resulting in waste of coal resources. Based on this, the self-forming roadway mining technology without coal pillars was proposed. This technology pre-slits the side roof of the goaf to make the overlying strata in the gob collapse along the kerf surface under the action of its own weight and mine pressure to form a The empty roadway gang, so as to serve ...

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

Images