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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

Active Publication Date: 2016-03-02
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a support structure and support method for the middle rock pillar of the roadway intersection that is suitable for the deformation characteristics of the roadway intersection in deep wells, to ensure the stability of the roadway intersection, and to solve the problems existing in the prior art. Problems of support failure, roadway roof fall and landslide caused by large deformation of intersection

Method used

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

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Embodiment Construction

[0022] figure 1 It is a top view cross-sectional schematic diagram of roadway intersection and supporting structure in an embodiment of the present invention, wherein the roadway intersection is generally a deep well roadway intersection, and generally has a depth greater than 800 meters. The invention can be applied to deep well roadway with relatively high pressure, and can achieve good support effect.

[0023] Such as figure 1 As shown, the support structure of the middle rock pillar (bull nose) 100 at the intersection of the deep well roadway provided by the present invention includes: double control anchoring device 1, steel mesh 2, steel strip beam 3 and channel steel 4. In this embodiment, the steel mesh 2 is usually a welded steel mesh formed by welding, and the dual-control anchoring device 1 is preferably a constant-resistance large-deformation dual-control anchoring device.

[0024] The constant-resistance and large-deformation dual-control anchoring device 1 can ...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00
Inventor 何满潮孙晓明杨晓杰宫伟力王炯
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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