Mining supporting support equipment and mining method thereof

Abstract

The invention discloses mining supporting support equipment which comprises a middle hydraulic support device and end hydraulic support devices, wherein the middle hydraulic support device is used for supporting a mining working surface top plate, the end hydraulic support devices are located in troughs in two ends of a mining roadway and used for supporting the ends of a trough plate, the end hydraulic support devices are arranged at two ends of the middle hydraulic support devices respectively, a transition hydraulic support device is arranged between the end hydraulic support device at each end and the middle hydraulic support device, height of the middle hydraulic support device supporting top end of the middle hydraulic support device, the transition hydraulic support device supporting top end of the transition hydraulic support device and the end hydraulic support device supporting top ends of the end hydraulic support devices can be adjusted in the vertical direction, and the middle hydraulic support device supporting top end and the end hydraulic support device supporting top ends are arranged in flush. The invention further discloses a mining method used for the mining supporting support equipment to mine trough top coal in a fully mechanized coal mining face.

Description

technical field [0001] The invention relates to the technical field of coal mining in coal mines, in particular to a support bracket device for coal mining and a coal mining method thereof. Background technique [0002] A fully mechanized mining face is basically composed of a shearer, a conveyor, a loader, a crusher, and a belt conveyor. During coal mining, support equipment is required to support the roof to avoid coal seam collapse and construction danger. [0003] The side of the fully mechanized mining face close to the belt conveyor is often called the "head", and the other side is called the "tail". The support equipment currently used is generally a gentle transition or a vertical transition on the tail side, resulting in a part of the coal on the roof of the chute that cannot be mined. [0004] At present, in view of the fact that the mining height of the working face is greater than the height of the trough in the world, there are two techniques for cutting coal ...

AI Technical Summary

Problems solved by technology

Especially the top coal along the goaf is left in the goaf in a broken state, and the place along the goaf is the place where heat is most likely to accumulate and the air leakage in the gob is the largest, and spontaneous combustion is most likely to occur, posing a huge hidden danger

[0008] At present, major domestic coal enterprises have successively arranged large mining height working faces, and gradually appeared 3.5m, 4.0m, 4.5m, 5.0m, 5.5m, 6.3m, 7m, 7.2m and other fully mechanized mining working faces with large mining heights. When tunneling in the fully mechanized mining face with large mining height, it is basically excavated along the coal seam floor. The roadway excavation height is not as large as the thickness of the coal seam. During the mining process, the top coal cannot be recovered along the tunnel, and all of it will be left in the goaf after collapse. The waste of coal resources is avoided, and on the other hand, the high temperature in the goaf naturally buries hidden dangers.

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