Support method for extra-thick broken coal seam employing nest anchored ropes

A bird's nest and anchor cable technology, which is applied in the direction of earthwork drilling, temporary shielding, bolt installation, etc., can solve the problems of lack of support and reinforcement methods, and achieve good support effects, reduced deformation, and good safety
CN102733832AInactive Publication Date: 2012-10-17DATONG COAL MINE GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DATONG COAL MINE GRP
Publication Date
2012-10-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a support method for an extra-thick broken coal seam employing nest anchored ropes. The invention assists in solving a problem of lack of the support reinforcing method for an extra-thick broken coal seam tunnel. According to the invention, integrated combined support of anchor poles, nest anchored ropes, W steel bands and metal meshes is realized by utilizing preferable support parameters and adopting nest anchored ropes which are specially designed; a deformation degree of the super high breaking coal seam tunnel is substantially reduced; requirements for super high breaking coal seam roadway support are satisfied; safety of the super high breaking coal seam roadway is ensured; and production is guaranteed.
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Description

technical field

[0001] The invention relates to a supporting method for underground coal mines, in particular to a supporting method using "bird's nest" anchor cables for extra-thick broken coal seams. Background technique

[0002] Bolt support can significantly improve the stability of surrounding rock, and has obvious technical and economic advantages compared with traditional shed support, so it has attracted much attention from the geotechnical engineering circles all over the world, and has been rapidly developed and widely used. . At present, bolt support has become a main development direction of roadway support. Due to the influence of magmatic rock intrusion, the mines of Carboniferous coal seams have large thickness and complex structure, showing the characteristics of soft coal seam and relatively broken coal body. Although the bolt support technology has been relatively mature, the problem of support and reinforcement for the roadway of extra-thick broken coal ...

Claims

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