Steep coal seam section coal pillar roadside filling method

Abstract

Disclosed is a steep coal seam section coal pillar roadside filling method. The method comprises that filling materials are processed and transported comprehensively, a moving frame is propelled by a working surface, filling bags and filling separation plates are laid, an injection pipe is preset, and grouting and filling are conducted. A coal pillar roadside filling body is structured in a filling space composed of a section haulage way and a partial working surface worked out section so that a roadside supporting belt is formed. The size of the section coal pillar is increased, the filling body and the coal pillar are combined into a whole, and gangues in the worked out section are prevented from sliding down on a slope effectively. Supporting intensity of a lane is improved, and the problem that supporting of the lane is difficult is solved. The impact effect to the section coal pillar by the gangues in an upper section worked out section is reduced, deformation of surrounding rocks of a lower section tailgate is reduced, and stability of the lane is retained. Meanwhile, air leak is prevented, self-ignition of coal is prevented, and noxious gas in the worked out section is prevented form entering into a working area. The method is simple, easy to construct, time-saving, labor-saving and good in effect.

Description

technical field [0001] The invention relates to a filling method next to a coal pillar roadway in a section of a steeply inclined coal seam, and is especially suitable for filling next to a coal pillar roadway in a section of a steeply inclined long arm coal mining method. Background technique [0002] The mining of steeply inclined coal seams has always been an important subject in the research of coal mining technology. For a long time, a large number of experts and scholars have done a lot of research on it and achieved some satisfactory results. In the actual coal mining process, due to the particularity of geological conditions for mining steeply inclined coal seams, when mining steeply inclined coal seams, the gangue falling out of the goaf cannot stay in place in most cases due to its own weight. The inclined direction of the coal seam immediately slides down. Mechanism analysis of deformation and failure characteristics of mining roadways in steeply inclined coal se...

AI Technical Summary

Problems solved by technology

When leaving a roadway along the goaf in a steeply inclined coal seam roadway, there are problems such as the decline of gangue in the goaf, difficulty in roadway support, large deformation of the roadway roof, erosion of harmful gases in the goaf, and low utilization rate of the mining roadway.

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