Processing method for comprehensive mechanical coal mining working surface to quickly pass karst collapse column

Abstract

The invention discloses a processing method for a comprehensive mechanical coal mining working surface to quickly pass a karst collapse column. The processing method is characterized by comprising the steps that firstly, after a coal mining working surface roadway system is formed, the plane range of the karst collapse column in a to-be-mined coal seam is delineated through a geophysical / drilling prospecting method; secondly, when the coal mining working surface is pushed to the karst collapse column, a small-size hanging type scraper conveyor perpendicular to the working surface direction is hung on a comprehensive mechanical coal mining hydraulic support, then, drilling and blasting are conducted on the collapse column in the coal mining working surface direction, and blasted falling waste rock is directly transported to a worked out section through the small-size hanging type scraper conveyor; thirdly, coal mining is started, a coal mining machine is made to be unloaded and quickly pass through a blasted empty section, and normal coal cutting is restored after the coal mining machine runs to a normal coal seam section; and finally, drilling and blasting are conducted on the karst collapse column again, and the rest can be done in the same manner till the coal mining machine passes the whole karst collapse column. According to the processing method for the comprehensive mechanical coal mining working surface to quickly pass the karst collapse column, the coal mining machine can directly and quickly passes the karst collapse column in an unloaded mode, continuous coal mining of the working surface is achieved, and the damage of passing the collapse column to the coal mining machine and other equipment is greatly reduced.

Description

technical field [0001] The invention relates to coal mine technology, in particular to a process method for processing special geological bodies in a comprehensive mechanized coal mining face, in particular to a process method for a fully mechanized coal mining face to quickly pass through a karst subsidence column. Background technique [0002] In coal mining, karst collapse columns are sometimes encountered. The karst collapse column is a collapsed body formed after the collapse of the limestone caves formed by the cracks developed in the thick limestone after long-term acid water erosion, corrosion, and dissolution. The mining of the surface has a significant adverse effect. At present, when collapsing columns are encountered in the fully mechanized mining face, some of them are disposed of by moving equipment. Because there are many heavy equipment in the fully mechanized mining face, it is difficult to move, so some of them are handled by forced horizontal push. Beca...

AI Technical Summary

Problems solved by technology

Due to the fact that the collapse column is harder than coal when pushed horizontally, it will cause serious damage to the equipment and there are potential safety hazards, and the gangue transportation volume is large, the coal quality is poor, the consumption is high, the efficiency is low, and the speed is slow, which seriously affects the economic benefits of coal mining

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