Method for mechanically mining coal by using steep seam pseudo inclination bracing type retractable flexible shield support

Abstract

The invention discloses a method for mechanically mining coal by using a steep seam pseudo inclination bracing type retractable flexible shield support. By the method, a steep seam coal mining machine and a bracing type retractable flexible shield support are provided. The method comprises the following steps of: 1, mining, namely mining by arranging the coal mining machine on a pseudo inclination working surface; 2, loading and transporting the coal, namely raking a falling coal body to a conveying mechanism and conveying the falling coal body to the rear part of the coal mining machine by using left and right gathering arms of the coal mining machine, sliding the falling coal body to a coal sliding hole truck loading point through a sliding chute, loading and transporting; 3, supporting an operating area, namely arranging the bracing type retractable flexible shield support in the operating area; 4, ventilating the working surface; 5, atomizing for dust removal; 6, exploiting upper triangle coal; and 7, recycling lower triangle coal, namely dredging a finishing cut, lowering the shield support to a horizontal position gradually, disassembling and decomposing the coal mining machine, transporting to the next stoping working surface and completely recycling the shield support when the working surface is propelled to a place neara district rise hole. By the method, the problems of low recovery ratio, low mechanization degree, low single yield of the working surface, severe working environment, high probability of malignant accidents and the like in domestic and oversea steep seams can be radically solved.

Description

technical field [0001] The invention relates to a mining method for a steeply inclined coal seam, in particular to a pseudo-slant support type scalable flexible cover support mechanized coal mining method for a steeply inclined coal seam. Background technique [0002] At present, storage coal mining method, long hole blasting coal mining method, flexible cover support coal mining method, pseudo oblique trend longwall segmented intensive coal mining method, suspended support caving coal mining method, horizontal split coal mining method are mostly adopted at home and abroad. The section top-coal caving mining method and the roadway top-coal caving mining method are used to mine steeply inclined coal seams. These methods have improved the mining level of steeply inclined coal seams under specific conditions to varying degrees, and have also partially solved the mining problems of steeply inclined coal seams. However, the problems of low level of mechanization, low recovery rat...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a mechanized coal mining method with pseudo-slanted support type retractable flexible cover support in steeply inclined coal seams, which can fundamentally solve the problem of low recovery rate, low degree of mechanization, low unit yield of working face and harsh working environment at home and abroad in steeply inclined coal seams. and serious accidents

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