High section trend wall-type fully mechanized caving mining method for large inclined super high seam

Abstract

The invention discloses a high section trend wall-type fully mechanized caving mining method for a large inclined super high seam. The method conducts respective mining on a plurality of mining sections in the same section from top to bottom, and the mining process is as follows: first, determination of a coal face: the coal face of a mining section in the current mining section is determined; the coal face is a high section trend wall-type inclined coal face and is the actual mining face; the coal face is divided into a lower section coal face and an upper section coal face above the lower section coal face; and the lower section coal face is a polyline section coal face, and the upper section coal face is a linear section coal face; 2, determination of the height of the section; and 3, coal seam mining: a plurality of coal seam sections are mined respectively. The method of the invention has the advantages of simpleness, reasonable design, simple construction and high-efficiency safe and reliable mining process, and can effectively solve the problems of severe mining difficulty, low safety factor and incapability of efficient mining in the mining process of large inclined super high seam.

Description

technical field [0001] The invention belongs to the technical field of coal mine mining, and in particular relates to a fully mechanized caving coal mining method in the high section towards the wall of a large inclined ultra-thick coal seam. Background technique [0002] Highly inclined and extra-thick coal seams refer to coal seams with an inclination angle of α=55°~75° and a thickness of more than 4.5m. They occur in Russia, Ukraine, Poland and other countries and western my country, especially in Xinjiang, where the reserves are large and mining is extremely difficult. Big. For a long time, small coal mines mining such coal seams have generally adopted traditional and backward non-mechanized coal mining methods, such as stacking, warehousing, steps, and roadway laying, etc., which have high labor intensity, poor working environment, many safety accidents, and high production efficiency. low-level defects. Since the 1970s, medium-sized coal mines have gradually tested an...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fully mechanized caving coal mining method in the high section of a large inclined and extra-thick coal seam, which is simple in method, reasonable in design, convenient in construction and high in mining efficiency, in view of the above-mentioned deficiencies in the prior art. The mining process is safe and reliable, and can effectively solve problems such as difficult mining, low safety factor, and inability to achieve high-efficiency mining in the mining process of large inclined and extra-thick coal seams

Images