Coal seam reinforcing structure and coal seam reinforcing method

A technology for strengthening structures and coal seams, which is applied in earth-moving drilling, mining equipment, installation of bolts, etc., can solve the problems of roof falling and poor coal seam mining safety, and achieves improvement of bearing capacity, self-bearing capacity, and enhancement of bearing capacity. Effect

Pending Publication Date: 2021-09-24
TIANDI SCI & TECH CO LTD +1
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  • Abstract
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Problems solved by technology

[0005] The invention provides a coal seam reinforcement structure and a coal seam reinforcement method, which are used to solve the problem

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  • Coal seam reinforcing structure and coal seam reinforcing method
  • Coal seam reinforcing structure and coal seam reinforcing method

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawi...

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Abstract

The invention provides a coal seam reinforcing structure and a coal seam reinforcing method. The coal seam reinforcing structure comprises a lower coal seam roof and a reinforcing assembly; a crack is formed in the lower coal seam roof; the reinforcing assembly comprises a drilling anchor and a reinforcing piece, the drilling anchor is drilled into the lower coal seam roof and communicates with the crack, and the drilling anchor is used for injecting reinforcing liquid into the crack; and the reinforcing piece abuts against the outer wall of the lower coal seam roof and is fixed to the lower coal seam roof through the drilling anchor. In the coal seam reinforcing structure, the drill anchor is arranged to be matched with the reinforcing piece, the reinforcing piece can be fixed to the lower coal seam roof through the drill anchor and support and reinforce the lower coal seam roof, and the drill anchor can inject the reinforcing liquid into the crack in the lower coal seam roof, so that not only can the integrity of the lower coal seam roof be guaranteed to improve the self-bearing capacity of the lower coal seam roof, but also the deformation resistance of the lower coal seam roof can be enhanced through the cooperation of the reinforcing piece, and the bearing capacity of the lower coal seam roof can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to a coal seam reinforcement structure and a coal seam reinforcement method. Background technique [0002] The thickness of rock formations varies between the upper and lower coal seams at close distances, and the proportion of extremely short distance coal seams is also relatively common. After the upper coal seam is mined, the roof of the lower coal seam mining roadway under the goaf is not thick, and the fractured rock strata with well-developed cracks are damaged by the mining of the upper coal seam. The existing technology can only use the combination of anchor rod and short anchor cable and hollow grouting Reinforcement methods such as anchor rods or grouting anchor cables, erecting dense metal brackets, etc. For the roof with small thickness, the existing reinforcement methods are no longer applicable or have great limitations. There are two reasons for this: ...

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Application Information

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IPC IPC(8): E21D20/02E21D20/00
CPCE21D20/02E21D20/00
Inventor 张剑白晓生张红义刘爱卿白建明王港盛
Owner TIANDI SCI & TECH CO LTD
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