Comprehensive mechanized coal mining method through cantilever support

Abstract

The invention relates to a comprehensive mechanized coal mining method through a cantilever support, which organically combines a shearer, a scraper conveyer, a cantilever support and a hydraulic breaking-off prop for combined operation. The shearer is started to cut the coal wall, and the cut-off coal automatically falls on the scraper conveyer; the scraper conveyer is started to automatically convey the coal out; when the shearer cuts the coal wall to a certain depth, an expansion link of a jack is pushed to extend out, the hydraulic breaking-off prop is used as a fixed fulcrum, and the scraper conveyer and the shearer arranged thereon are together pushed towards the coal wall; the hydraulic breaking-off prop is disassembled and separated from a top plate, a piston rod of the jack is pushed to draw back, the scraper conveyer is used as the fixed fulcrum, and the hydraulic breaking-off prop is pulled forwards; and the cantilever support moves forwards through a hydraulic operating mechanism till the cantilever support completely moves forwards in place. The comprehensive mechanized coal mining method has the advantages that the thin seam mining difficulty and the labor intensity of workers are reduced, and the mechanization degree of the thin seam mining is improved.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a comprehensive mechanized coal mining method with suspension supports. Background technique [0002] In my country's proven coal fields, the thin coal seams that are difficult to mine at 0.8-1.6 meters account for about 30% of the total reserves, or even a little higher. The mechanized mining of this coal seam has been a subject and difficult problem in the field of coal mining in my country for many years. As coal is a non-renewable primary energy source, coal resources play a vital and fundamental role in ensuring my country's energy security; therefore, thin coal seams with such conditions must be mined even if they are difficult to mine, and cannot be discarded, as discarding means waste . However, because the height of the coal seam is very low and the working space is very narrow, it is very difficult for workers to get in and out. They cannot walk upright on the working surface, a...

AI Technical Summary

Problems solved by technology

Under such conditions, the safety situation is not guaranteed, the labor intensity of coal miners is very high, the production efficiency is very low, and the unit yield of the working face is even lower.

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