Deep stope automatic lane forming physical simulation test method and device

Abstract

The invention discloses a novel lane forming method for mining a long wall, namely a deep stope automatic lane forming physical simulation test method which changes the traditional mode of mining the long wall through a single face and double lanes. An oriented pre-cracking top-cutting lane-reserving technique is adopted; and a return mining lane of a gate road under a primary work face is reserved and serves as one of return mining lanes of the next new work face so as to mine through a single face and a single lane. The method has the advantages of removing concentrated stress above the coal on adjacent working faces, reducing the mining ratio, improving the production efficiency and reducing the resource waste, and belongs to a novel, safe, efficient, economic and scientific mining technique. At the same time, the invention designs a deep stope automatic lane forming physical simulation test device based on the principle so as to prove the reliability of the method and ensure the authenticity and the availability of the test process.

Description

technical field [0001] The invention relates to the technical field of deep coal mining, in particular to a physical simulation experiment method and device for indoor research on automatic roadway formation in deep stopes under longwall mining without coal pillars. Background technique [0002] In my country, the coal output of underground mining accounts for 96% of the national coal output, and longwall mining is the main method of underground mining. With the increase of coal mining depth, it is extremely difficult to maintain the upward channel roadway built in each section of the longwall mining process, and it is often accompanied by a series of geological disasters. For example, if the residual roadway coal pillar is in a deep coal seam, the pressure of the coal bed will increase, and there will be mixed gas and coal outbursts, frequent ground pressure bursts and other dynamic disasters, resulting in the mining of close coal seams under the coal pillar. A sharp deter...

AI Technical Summary

Problems solved by technology

No matter which method is adopted, a phenomenon cannot be avoided, that is, the deformation of the surrounding rock of the roadway, especially in the coal roadway, the surrounding rock is more likely to be deformed, and the section of the roadway will be reduced after the deformation of the surrounding rock, which hinders transportation, ventilation and personnel walking. The phenomenon that the roadway is scrapped due to rock deformation occurs from time to time, which seriously affects the production and threatens the personal safety of workers.

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