Mine advancing type filling roadway forming mining method

Abstract

The invention discloses a mine advancing type filling roadway forming mining method. A fracture surface of a section entry is cut in the coal cutting process of a coal mining machine, and a filling roadside is formed on the side of a goaf by using solid filling technology; a filling coal mining process is adopted by coal resource recovery and goaf filling; and the advancing direction of a workingface adopts the advancing type. The section entry is gradually formed along with mining of the working face, anchor rods, anchor cables and friction type constant-resistance stand columns are adopted,and film grouting sealing are carried out on the filling roadside, so that a combined support is achieved. A haulage entry and an air return entry of a first mining face are formed by a filling automatic roadway forming method; and one section entry of a superseding face is formed by adopting the filling automatic roadway forming method, and the other section entry adopts the entry which is filled to be automatically formed by the last working face. When the same section entry continues to serve the next working face, the function is unchangeable. According to the method, the process is simple, the non-pillar mining is realized, the resource recovery rate is improved, the up and down superseding pressure on the recovery working face is reduced, and the recovery efficiency is improved.

Description

Technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a mine forward-filling tunneling mining method, and is particularly suitable for a solid-filled coal mining face without coal pillars along the goaf. Background technique [0002] Under normal circumstances, a protective coal pillar of about 20m is left between the two working faces of the upper and lower sections of the backfill mining and near the upper and lower mountains, causing a large amount of coal resource loss. In order to further increase the recovery rate, since the 1950s, major coal-producing countries in the world, such as the United Kingdom, Germany, Poland, Russia, and China, have successively carried out test studies on roadway retention along goafs, and continuously developed and improved the laws of overburden movement, The roadside support technology and the roadway support technology have continuously improved the technology of retaining roadways a...

AI Technical Summary

Problems solved by technology

However, the gob-side retaining method is based on caving mining, which is difficult to construct, high in cost, and seriously interferes with mining and roadway maintenance, resulting in low efficiency.

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