Mining method employing solid filling and fully-mechanized coal mining hybrid working face

Abstract

The invention discloses a mining method employing a solid filling and fully-mechanized coal mining hybrid working face, namely a method for carrying out coordinated and combined mining by combining solid filling with fully-mechanized coal mining on the same coal face. Coal mining is carried out by adopting a strike retreating-longwall mode; coal cutting, coal charging and coal handling procedures are the same as those of a fully-mechanized coal mining process; a solid filling section of the hybrid working face is used for supporting a roof by virtue of a filling and mining hydraulic support; solid filling materials are backfilled to a goaf management roof by virtue of a porous hopper conveyor which is suspended behind and below of the filling and mining hydraulic support; a fully-mechanized coal mining section is used for supporting the roof by virtue of a fully-mechanized coal mining hydraulic support; the goaf is managed by adopting a caving method. The mining method is beneficial for giving play to dual advantages of solid filling and fully-mechanized coal mining; the problem of environmental pollution caused by accumulation of solid wastes such as gangue, coal ashes and construction wastes on the ground is reduced by solid filling; the working face is lengthened by combining with fully-mechanized coal mining; tunneling of a mining roadway is reduced; the single yield and single effect of the working face are improved; the requirements of a modern mine on production capacity are met.

Description

technical field [0001] The invention relates to the technical field of coal mine mining technology, in particular to an underground solid filling and fully mechanized coal mining mixed working face mining method suitable for large coal gangue output. Background technique [0002] With the introduction of the concept of green mining of coal resources, a large amount of gangue and other solid waste produced by modern mines under high output has begun to be used for backfilling underground gobs. The new method of transportation to underground backfilling has achieved remarkable results in the "three down" mining, but due to the limitations of the solid filling coal mining equipment and the filling technology itself, the current length of the solid filling coal mining face is relatively short, generally in the 60-150m, and according to different filling and mining purposes, it is generally necessary to repeatedly push and tamp the solid filling material, and the process is relat...

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Problems solved by technology

[0002] With the introduction of the concept of green mining of coal resources, a large amount of gangue and other solid waste produced by modern mines under high output has begun to be used for backfilling underground gobs. The new method of transportation to underground backfilling has achieved remarkable results in the "three down" mining, but due to the limitations of the solid filling coal mining equipment and the filling technology itself, the current length of the solid filling coal mining face is relatively short, generally in the 60-150m, and according to different filling and mining purposes, it is generally necessary to repeatedly push and tamp the solid filling material, and the process is relatively complicated. Therefore, the unit yield and efficiency of the solid filling working face are low

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