A treatment method for rapid crossing of karst subsidence column in fully mechanized mining face

Abstract

The invention discloses a method for quickly passing through a karst subsidence column in a fully mechanized mining face, which is characterized in that, after the coal mining face roadway system is formed, the geophysical prospecting / drilling method is first used to delineate the karst subsidence column in the coal seam to be mined Plane range; when the coal mining face advances to the karst subsidence column, a small hanging scraper conveyor perpendicular to the direction of the working face is hung on the fully mechanized mining hydraulic support, and then drilled and fired on the subsidence column along the direction of the coal mining face , the blasting gangue is directly transferred to the goaf through a small hanging scraper conveyor; then start coal mining, let the shearer pass through the blasting section quickly and without load, and resume normal coal cutting after running to the normal coal seam section; Then, drilling and blasting are carried out on the karst collapse column, and so on until the whole karst collapse column is passed. The invention enables the shearer to pass through directly and quickly without load, realizes continuous coal mining on the working face, and greatly reduces the damage to equipment such as the shearer when passing through the collapse column.

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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