Reinforcing method for crushed top plate of coal face

Abstract

A reinforcing method for a crushed top plate of a coal face relates to the safety technical field of the coal face of a coal mine, can reinforce the crushed top plate through the combined action of a wire rope and slurry, forms an unique space grid reinforced structure, overcomes not only the defects of unobvious single grouting reinforcing effect and high cost, but also the defects of large labor intensity, long period and failure in fundamentally solving top leakage when the crushed top plate is treated by erecting a shed, and is obvious in crushed top plate reinforcing effect. Integrated with the advantages of grouting reinforcement, and matched with a specially excavated measure laneway, the method is free of time and space, and can pre-reinforce a composite thin crushed top plate before coal bed exploitation, and reinforce an area with the possibility of top leakage during coal bed exploitation, so as to ensure safe stopping of the coal face.

Description

Technical field:

[0001] The invention relates to the field of safe technical operation of coal mining working faces, in particular to a reinforcement method applied to composite soft and broken roofs in coal mining working faces. Background technique:

[0002] At present, the composite soft and broken roof seriously threatens the normal production of the working face. Due to the presence of such conditional roofs in most fully mechanized mining faces with large mining heights, large-scale roof leakage accidents occurred many times in the mining process of the working face, and the working face was destroyed. Forced to stop production, seriously affecting the safe and efficient production of coal mining face.

[0003] However, the existing methods for strengthening composite soft and broken roofs mainly include the following processing methods: artificial false roofs made of artificial roofs, hanging metal meshes, cement mortar injection, and chemical slurry injection (the re...

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