The support structure and support method of the middle rock pillar at the roadway intersection

A technology for intermediate rock pillars and intersections, which is applied to the support structure and support field of intermediate rock pillars at roadway intersections, can solve the problems of roadway roof fall, support failure, landslide, etc., and achieves increasing horizontal stress and improving stress state. , the effect of low cost
CN103615258BActive Publication Date: 2016-03-02CHINA UNIV OF MINING & TECH (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH (BEIJING)
Publication Date
2016-03-02

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Abstract

Disclosed are a supporting structure and method of a middle rock pillar of a roadway junction point. The supporting structure comprises a plurality of dual-control anchoring devices and a steel fabric. Each dual-control anchoring device comprises a rod body and two trays and can penetrate into the first surface of the middle rock pillar and penetrate out of the second surface of the middle rock pillar, and the two end portions of each rod body are made to be exposed out from the middle rock pillar. The outer surface of the middle rock pillar is wrapped by the steel fabric, and the steel fabric is fixed to the two end portions of each rod body. Every two trays are fixed to the two ends of the corresponding rod body and are connected with the first surface of the middle rock pillar and the second surface of the middle rock pillar in a butting mode so as to fix the steel fabric.
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Description

technical field

[0001] The invention relates to a support structure and a support method for an intermediate rock pillar at a roadway intersection. Background technique

[0002] Roadway intersections, especially deep mine roadway intersections, have higher requirements for support because of their large cross-sections, large spans, and high stress concentration in the middle rock pillars.

[0003] The traditional roadway support method is to support separately on both sides of the roadway intersection. However, due to the unreasonable support method and no lateral constraints, the roadway intersection cannot be well supported. In addition, the two sides of the middle rock pillar (Niubizi) at the intersection of the roadway are supported separately, which lacks integrity, resulting in serious deformation at the intersection of the roadway. Contents of the invention

[0004] The purpose of the present invention is to provide a support structure and support method for the m...

Claims

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