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Supporting method of laneway under multiple goafs in ultra-close coal seam group

A very short-distance, coal seam group technology, applied in the support field of roadways under multi-goaf areas in extremely short-distance coal seam groups, can solve problems such as imperfect roadway support under multi-mined-out areas, and achieve good safety and economic effects. The effect of alleviating the tension of excavation and reducing the excavation construction team

Inactive Publication Date: 2012-04-25
DATONG COAL MINE GRP
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AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of imperfect roadway support in the existing ultra-short-distance coal seam group with multiple gobs, the present invention provides a support method for the roadway under the ultra-short distance coal seam group with multiple goafs

Method used

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  • Supporting method of laneway under multiple goafs in ultra-close coal seam group
  • Supporting method of laneway under multiple goafs in ultra-close coal seam group
  • Supporting method of laneway under multiple goafs in ultra-close coal seam group

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Embodiment Construction

[0031] The support method for the roadway under the multi-mined-out area of ​​the extremely close coal seam group includes the following steps:

[0032] Preparatory work, the steps include: use hand picks to construct the section, reserve 500mm for the two sides of the roadway, and finally use hand picks to plan and dig into shape; perform temporary support, lay steel wire mesh, and upper steel beams 3;

[0033] To install the roof anchor 1, the steps include: use a single anchor drill to drill the anchor holes according to the 3 holes of the steel beam; put two sections of resin medicine coils into the anchor holes through the 3 holes of the steel beam, and use the assembled anchor 1 Slowly push the resin medicine roll to the bottom of the hole; use the stirring joint to connect the drilling rig with the anchor pin nut, then raise the drilling rig to push the anchor rod, start stirring when it is close to the roof rock surface 300~500mm, slowly raise the drilling rig and Afte...

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Abstract

The invention specifically relates to a supporting method of a laneway under multiple goafs in an ultra-close coal seam group, which can be used for solving the problem of incomplete support of the laneway under the multiple goafs in the ultra-close coal seam group. The supporting method of the laneway under the multiple goafs in the ultra-close coal seam group comprises the following steps: performing preparation work, performing temporary supporting, laying a steel wire mesh, loading steel beams, mounting an anchor rod of a top plate, mounting the anchor rod of an upper part, mounting an anchor rope of the top plate and the like. By utilizing the effective supporting scheme according to the invention, the technical difficult problem of supporting the laneway under the multiple goafs in the ultra-close coal seam group in Datong mining area is solved, and the great safety economic effect and the great social benefits are achieved.

Description

technical field [0001] The invention relates to a roadway support method, in particular to a roadway support method in an extremely short-distance coal seam group with multiple gobs. Background technique [0002] The occurrence and mining of short-distance coal seams account for a large proportion in my country, such as Datong mining area, Xishan mining area, Xinwen mining area, Jinglong mining area, Pingdingshan mining area, Huainan mining area, Kailuan mining area, Shuicheng mining area, etc. question. When the distance between coal seams is relatively large, the mining of the upper coal seam has little impact on the mining of the lower coal seam, and its mine pressure appearance law and mining methods are basically not affected by the mining of the upper coal seam, which is similar to ordinary single coal seam mining. The roadway excavation and mining in the lower coal seam are relatively simple, and there are few difficulties encountered. However, as the distance betwee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D19/00E21D20/02E21D21/00
Inventor 杨智文牛福龙宁掌玄王成纪润清王玉锦刘敬张春山胡锦元匡铁军徐虎张懿杨发长张勇杨建武
Owner DATONG COAL MINE GRP
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