Coal mine three-under-three coal pressing filling mining system and coal mine three-under-three coal pressing filling mining method

Abstract

The invention relates to the technical field of coal mining, and discloses a coal mine under-three coal pressing and filling mining system and method.The coal mine under-three coal pressing and filling mining system comprises a screening and separating system and a ground slurrying system.The screening and separating system comprises coal gangue separating equipment, a crusher and a screening machine; the coal gangue separation equipment is used for separating coal from coal gangue in the coal mine conveyed by the coal conveying belt; in the mined roadway, aggregate with the particle size smaller than 3 cm is formed by crushing coal gangue generated by the tunneling roadway, gangue generated by a gangue dump and slag generated by a thermal power plant, meanwhile, slurry is prepared through a high-speed slurry making machine, the aggregate and the slurry are conveyed to a filling site, the aggregate and the slurry are guided from a roadway opening of the roadway needing to be filled after being evenly mixed, and filling is completed. The roadway needing to be filled is filled by utilizing gravity and liquidity of slurry, so that the workload of post-treatment can be reduced, and the situation that potential safety hazards of a coal mining area are increased due to the existence of the roadway is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a system and method for "three lower" coal pressing and filling mining in a coal mine. Background technique [0002] Coal is a solid combustible mineral that is gradually formed by ancient plants buried in the ground and has undergone complex biochemical and physical chemical changes. Coal is one of the indispensable energy sources for our human production and life. The supply of coal is also related to my country's industry. Even the stability of the development of all aspects of society, the safety of coal supply is also the most important part of my country's energy security. Because coal resources are more important, coal mining has become an indispensable mineral mining industry. While coal mining promotes economic development, it also brings serious environmental problems. The process of coal mining has caused problems such as groundwater loss and land subsidence, which...

AI Technical Summary

Problems solved by technology

With the rapid development of my country's economy, the way of energy production and utilization is also constantly improving. The coal industry is working hard to get closer to a safe, green and economical energy industry system, while the traditional coal mining industry generally waits for all coal mines to be mined Finally, the existing roadways are concentrated to be filled, but this not only increases the workload of subsequent processing, but also the existence of roadways will also increase the safety hazards in coal mining areas

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