Filling mining method for caving zone on coal face

Abstract

The invention relates to a filling mining method for a caving zone on a coal face and the method can effectively solve the problems that coal filling mining is greatly limited by space of the coal face, time and floor space, and the coal mining efficiency on the coal face is low. The invention adopts the technical scheme that the method comprises the following steps: (1) excavating a special filling roadway; (2) establishing ground filling stations; (3) determining the filling interval of each cycle; (4) drilling grouting holes and connecting pipelines; (5) conducting filling operation; and (6) conducting cycle mining. Compared with other filling methods, the method provided by the invention is free from limits of space of the coal face, time and floor space, can be matched with any coal mining technology under appropriate conditions, can easily achieve high yield and high efficiency on a filling face through the combination with a fully mechanized top coal caving mining method, overcomes the defect of low yield of the conventional filling face, and has favorable social and economic benefits.

Description

Technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for filling and mining the caving area of ​​a coal mining face. Background technique [0002] The mining and utilization of coal resources will inevitably cause damage to the living environment of human beings: after coal is mined from the stratum, it will cause surface subsidence; the gangue discharged from the mining area and the fly ash produced by power plants encroach on the land, pollute the environment and endanger human safety The problem of "three-under" coal mining has become increasingly prominent, and the liberation of "three-under" coal mining has become one of the major technical problems that coal mine enterprises urgently need to solve. [0003] The backfill mining method can not only use the waste generated in the mine production process, but also liberate the "three under" coal resources. It is an effective technical means to control mining damage and incr...

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Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a filling mining method in the caving area of ​​the coal mining face, which can effectively solve the problem of large space and time constraints of the coal mining face during coal filling mining. The problem of large ground space restrictions and low coal mining efficiency in the working face

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