Method for preventing ended support of fully mechanized coal mining face from being stuck

Abstract

The invention discloses a method for preventing an ended support of a fully mechanized coal mining face from being stuck. The method specifically comprises the following steps of 1, additionally arranging a single row of anchor cables from an advanced support to a cross side of the ended support; 2, maintaining full-fracture-surface dinting all the time with the advanced support facing forwards; 3, additionally arranging double rows of single props in front of the advanced support to serve as a forepoling; 4, additionally arranging anchor cables in front of the advanced support timely; 5, adopting a dinting mode for lowering a reversed loader at the portion of the ended support which is stuck. According to the method, a top plate in front of the ended support can be reinforced in advance,and can be prevented from further sinking, larger pressure is applied to the ended support, dinting is conducted in advance, and the stroke of the ended support is ensured; the effect of preventing the ended support from being stuck is achieved, processing is also conducted after the ended support is stuck, a positive effect is achieved, the reversed loader at the ended support is subjected to dinting, the damage caused by blasting of the top plate is reduced, and processing of the ended support which is stuck is better facilitated.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a method for preventing crushing of a support at the end of a fully mechanized mining face. Background technique [0002] The end support of the coal mine fully mechanized mining face is located in the stress concentration area of ​​the cut hole and the transport trough. When the pressure is periodically applied or the roof is severely broken, leak-type or push-down type roof caving will occur, thereby compressing the end support of the fully-mechanized mining face. Dead, causing the end bracket column to have no travel and unable to move. In the past, after the support was crushed to death, the method of blasting the top plate above the end support to release the gangue was used to restore the stroke of the end support column. However, when the top plate was extremely broken, the blasting would make the top plate more broken and would be more unfavorable for the restoration of the sup...

AI Technical Summary

Problems solved by technology

[0002] The end support of the coal mine fully mechanized mining face is located in the stress concentration area of ​​the cut hole and the transport trough. When the pressure is periodically applied or the roof is severely broken, leak-type or push-down type roof caving will occur, thereby compressing the end support of the fully-mechanized mining face. dead, resulting in no travel for the end support column to move

In the past, after the support was crushed to death, the method of blasting the top plate above the end support to release the gangue was used to restore the stroke of the end support column. However, when the top plate was extremely broken, the blasting would make the top plate more broken and would be more unfavorable for the restoration of the support. It is more difficult to deal with the crushing of the end bracket, which shows that this method has limited

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