Three-roller coal miner applicable to coal seam with thickness of 7-10m and mining method

Abstract

The invention discloses a mining method applicable to full-seam mining with large mining height of a coal seam with the thickness of 7-10m. The coal seam of a working face is divided into an upper part, a middle part and a lower part, and is mined by a three-roller coal miner; two end rollers of the coal miner are mainly used for cutting the upper part and the lower part of the coal seam; a middle roller is used for cutting the middle part of the coal seam; two end parts of the three-roller coal miner are connected with small-diameter rollers via long rocker arms; the middle part of the three-roller coal miner is provided with the large-diameter roller with a short rocker arm; the two end parts of the three-roller coal miner are provided with the equal-diameter rollers with equal long rocker arms; the short rocker arm is arranged on a bottom bracket of the coal miner; the three-roller coal miner is matched with a scraper plate conveyer and an extra large mining height hydraulic support to achieve automatic end part beveling feed. According to the invention, the three-roller coal minder is adopted for full-seam mining with large mining height for the coal seam with the thickness of 7-10m, and can solve the problems of low resource recovery ratio, spontaneous ignition of the coal seam, low efficiency and the like of existing full-mechanized caving mining and layered mining, and the feasible large mining height mining method is provided for the coal seam with the thickness of 7-10m.

Description

technical field [0001] The invention belongs to the technical field of coal mine mining, and relates to a mining method suitable for thick coal seams, in particular to a full-height mining method for coal seams with a thickness of 7 to 10 m. Background technique [0002] The full-height mining method with large mining height and single mining has significant advantages such as high production efficiency, simple mining process, high resource recovery rate, convenient management, easy automation, and intelligent mining. It has become one of the preferred methods for thick coal seam mining at home and abroad. With the advancement of coal science and technology, the mining height of the large mining height single mining full height mining method is gradually increasing. At present, modern high-yield and high-efficiency mines such as Hongliulin Coal Mine of Shaanxi Coal Group, Shangwan Coal Mine of Shenhua Group, Bulianta Coal Mine, and Luneng Sandaogou Coal Mine have successfull...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned three-drum shearer technology provides direction guidance for the realization of fully mechanized mining with a super large mining height of 7-10m, but the above-mentioned three-drum shearer is mainly to reduce the manufacturing cost of the shearer and achieve the purpose of saving energy and reducing consumption, and the mining process is complex , It is difficult to achieve high production and high efficiency, and it is impossible to take advantage of the advantages of fully mechanized mining with large mining heights, and there is no innovation in the supporting equipment and mining methods of the working face, and it cannot be adapted to the fully mechanized mining face with a super large mining height of 7-10m.

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