Mechanized Coal Mining System and Coal Mining Method in Steeply Inclined Thick Coal Seam

Abstract

The invention discloses a mechanical coal mining system and method for a steeply-inclined thick coal seam, and relates to the technical field of coal mining. The mechanical coal mining system and method mainly aims to improve the yield, the mining efficiency and the coal mining safety of a coal mining working face. According to the main technical scheme, the coal mining system comprises the working face, a transportation roadway, an air return roadway, a shield bracket, an excavation and mining machine, an excavator and a scraper conveyor; the transportation roadway and the air return roadwayare arranged on the two sides of the working face in an inclined mode, one ends of the transportation roadway and the air return roadway communicate with the working face, and the other end of the airreturn roadway conducts air return through an air return cross-cut; the working face is arranged along the trend of the coal seam, the coal wall of the working face is in the horizontal state, and the working face is excavated downwards along the coal seam in an oblique mode; the shield bracket is supported between a roof and a floor of the coal seam and used for supporting a goaf; the excavationand mining machine and the excavator are located on the working face; and the scraper conveyor is located on the working face and used for conveying coal transferred by the excavation and mining machine to the transportation roadway. The mechanical coal mining system and method is mainly used for mechanical mining of the steeply-inclined thick coal seam.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a mechanized coal mining system and a coal mining method for steeply inclined thick coal seams. Background technique [0002] Steeply inclined coal seam reserves account for a relatively large proportion of my country's total coal reserves, especially in steeply inclined thick coal seams, where coking coal, anthracite and other rare coals account for a large proportion and have excellent coal quality, which are indispensable raw materials for metallurgy, chemical industry and other industries. Therefore, the research on mining methods of steeply inclined thick coal seams is of great significance to the sustainable development of my country's coal industry. [0003] At present, the commonly used methods for the mining of steeply inclined thick coal seams include lane-pillar mining method and horizontal segmented top caving coal mining method. Larger, it is difficult to realize...

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Problems solved by technology

[0003] At present, the commonly used methods for the mining of steeply inclined thick coal seams include lane-pillar mining method and horizontal section top caving coal mining method. Larger, it is difficult to realize mechanized operation, and the ventilation conditions of the mining working face are poor, which is not conducive to the long-term operation of the staff, resulting in low output of the working face, low mining efficiency and low coal mining safety

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