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Extra-long working surface fully mechanized coal mining process

A technology of working face and fully mechanized mining face, which is applied in surface mining, mining equipment, earth-moving drilling, etc. to achieve the effect of improving service life, prolonging emergency time, and reducing the number of house moves.

Inactive Publication Date: 2012-10-03
库尔勒金川矿业有限公司
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Problems solved by technology

[0004] In order to solve the problem that the length of the fully mechanized mining face does not exceed 1500 meters and realize the length of the fully mechanized mining face reaches 1500 meters to 3000 meters, the present invention relates to a fully mechanized top caving coal mining method for ultra-long working faces

Method used

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  • Extra-long working surface fully mechanized coal mining process
  • Extra-long working surface fully mechanized coal mining process
  • Extra-long working surface fully mechanized coal mining process

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Embodiment Construction

[0024] Excavate the up and down parallel grooves 4 and 5 to 1500-3000 meters respectively, and when driving to about 1500 meters, open the connecting lane 6 at the upper and lower parallel grooves 4 and 5. The upper troughs 4 and 5 are used as machinery, materials, personnel and air intake passages, and the lower troughs 5 are used as transport passages and air return lanes according to the telescopic belt conveyor. During the advancing process of the working face, the working face crossed the inflection point and crossed the connecting lane 6 at the same time, the adjustment of the working face and the difficulty of the roof pressure. In order to solve the above difficulties, the fan-shaped mining process was adopted to increase the pseudo bevel angle of the working face and reduce the advancing of the working face. Speed, during the propulsion process, firstly, the 1-10 frames at the lower end are used as the first group, and the mining face of this section is firstly advance...

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Abstract

The invention discloses an extra-long working surface fully mechanized coal mining process, which belongs to the technical field of coal mining. Due to the adoption of the process, a fully mechanized mining working surface can be 1,500-3,000 meters in length. The process comprises the following steps of: arranging a hydraulic bracket 13 in an open-off cut, arranging scraper conveyors 14 below front and back top beams of the bracket 13, making a drum coal cutting machine 12 ride on a coal blocking side rack of the front scraper conveyor 14 on the working surface, driving the drum coal cutting machine 12 to walk on a front slipping rack under the action of electric traction through walking teeth, cutting the coal wall of the fully mechanized mining surface by using the drum coal cutting machine 12, making cut coal wall coal briquettes fall into the front scraper conveyor 14, and transporting out of the working surface; and injecting a liquid into top coal on the working surface through the hydraulic bracket 13, supporting a top beam, applying pressure to a top plate, crushing top coal, lowering a back beam of the bracket 13, making crushed top coal fall into a back scraper conveyor 14 from a coal feeding port behind the bracket 13, transporting coal to a reversed loader through a back scraping plate 14, and transporting coal out of the working surface through the reversed loader, the crusher and a belt conveyor.

Description

technical field [0001] The invention belongs to the field of underground coal mining in coal mines, and relates to a fully mechanized coal mining method for ultra-long-distance working faces, especially in medium-thick coal seams where the coal seam is relatively stable, the roof is relatively hard, and the inclination angle of the coal seam is 22-26 degrees, which can realize mine recovery. The length of fully mechanized mining face reaches 3000 meters. Background technique [0002] Fully mechanized coal mining technology is comprehensive mechanized coal mining technology. The production process of the fully mechanized mining face mainly includes processes such as coal cutting, coal transportation, support, and goaf treatment. Coal cutting, coal transportation, and support processes are respectively completed by the drum coal cutter, the flexible scraper conveyor on the working surface, and the hydraulic support. The coal transported along the trough is transferred by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21F16/00
Inventor 朱徽李江贾光明黄辉龙张少勇刘少勇孟杰张磊
Owner 库尔勒金川矿业有限公司
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