Mining, selecting and filling integrated gangue filling system based on underground wind power gangue selection

Abstract

The invention discloses a mining, selecting and filling integrated gangue filling system based on underground wind power gangue selection. The mining, selecting and filling integrated gangue filling system comprises a screening system, a wind power gangue selection system, a coal flow system, a crushing system, a gangue transportation system and an underground filling system; and coal and gangue separation is realized in an underground limited space, and green mining of a mine is realized. Meanwhile, the link of lifting gangue in raw coal is reduced, the effective lifting capacity of a main shaft is improved, the economic benefit of the mine is improved, the problem of ecological environment damage caused by gangue ground discharge is solved, and the ecological and living environment around a mining area is improved; the raw coal produced by an underground stoping and driving working face passes through the screening system and is graded, oversize products enter the wind power gangue selection system, undersize products and coal subjected to wind power gangue selection enter the coal flow system, separated gangue enters the gangue crushing system, and the crushed gangue is conveyedto a stope face through the gangue transportation system for filling; and the number of equipment is small, the initial investment cost is low, the operation cost is low, and management is convenient.

Description

technical field [0001] The invention relates to the technical field of underground mined-out areas, in particular to an integrated gangue filling system based on underground wind-force selection of gangue. Background technique [0002] At present, there are mainly two methods for gangue filling in fully mechanized mining face: [0003] 1. Build a gangue filling station on the ground. The filling materials used in filling mining are generally coal gangue, sand, tailings, fly ash, etc. Filling materials are graded, crushed, mixed in proportion, and then transported to the underground through the conveying system excavated vertically downward from the ground, and then transported to the filling working face by belt conveyor and other transport equipment, and then fully mechanized mining hydraulic support for self-ramming filling , Filling and mining conveyors and other filling and fully-mechanized mining equipment can realize goaf filling. The process system of this solid was...

AI Technical Summary

Problems solved by technology

Due to the limitation of underground space, this method has a relatively simple coal preparation process, a small number of equipment, inconvenient equipment maintenance, and low annual processing capacity. It is not suitable for large mines and requires high investment.

[0005] The above two waste rock filling systems have the disadvantages of complex systems or small annual processing capacity, high initial investment costs, high operating costs, and uneconomical

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