Assembled type support and protection structure based on outer steel arch and inner concrete plate and construction method of assembled type support and protection structure

A support structure and concrete slab technology, which is applied in the direction of earthwork drilling, bolt installation, shaft equipment, etc., can solve the problems of large radial support force, poor stability, and large roadway deformation of arc slabs, so as to speed up construction Speed, guaranteed synergy, reduced construction time effects

Pending Publication Date: 2018-02-23
SHANDONG JIANZHU UNIV
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Problems solved by technology

The temporary support and the outer steel arch can provide immediate rigidity and strength during the initial support, and control the excessive deformation of the surrounding rock, which meets the theoretical requirements of the New Austrian Method; the assembled concrete arc slab is prefabricated in t

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  • Assembled type support and protection structure based on outer steel arch and inner concrete plate and construction method of assembled type support and protection structure
  • Assembled type support and protection structure based on outer steel arch and inner concrete plate and construction method of assembled type support and protection structure
  • Assembled type support and protection structure based on outer steel arch and inner concrete plate and construction method of assembled type support and protection structure

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[0042] The present invention will be further described below in conjunction with accompanying drawing.

[0043] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0044] Such as figure 1 As shown, the present invention includes a steel arch 6 and a concrete support body, the concrete support body is a multi-section splicing structure, and the steel arch frame 6 is arranged on the outside of the concrete support body; the concrete support body and the steel arch frame 6 pass through the anchor The rod 5 is fixed on the surrounding rock of the roadway / tunnel. The concrete support body is composed of multi-segment concrete arc-shaped plates 1 spliced ​​together. There are reserved anchor holes 4 (also used as post-grouting holes) and reserved bolt holes 2 on the concrete arc-shaped plates 1. The multi-segme...

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Abstract

The invention relates to an assembled type support and protection structure based on an outer steel arch and an inner concrete plate. The assembled type support and protection structure comprises a steel arch and a concrete support, wherein the concrete support is of a multi-piece arced plate assembling structure; the steel arch is arranged on the outer side of the concrete support; the concrete support and the steel arch are fixed on surrounding rock of a roadway/tunnel through anchor rods. By adopting the composite support and protection structure provided by the invention, the reinforced steel concrete casting and maintenance time is saved on the basis that a relatively large bearing force is ensured, and the support and protection construction speed is greatly increased. By adopting the assembled type support and protection structure, a novel technical way is provided for support and protection of deep well roadways and soft rock roadways, and a novel support and protection methodis provided for the field of roadway/tunnel support and protection.

Description

technical field [0001] The invention belongs to the field of underground engineering support, and in particular relates to an assembled support structure based on an outer steel arch frame and an inner concrete slab and a construction method thereof. Background technique [0002] As the mining depth of coal mines further increases, the support of deep mine roadways becomes more and more difficult, which has become an important issue affecting the safe and efficient production of coal mines. Traditional support methods such as anchor-net spraying, anchor injection, full-section anchor cables, U-shaped steel brackets, and concrete arches can no longer fully meet the support stability requirements. The composite support based on steel pipe concrete supports has greatly improved the bearing capacity, but in Support damage still exists in dynamic pressure roadway support. It is still an important topic to study support bodies with better support performance and more economical p...

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Application Information

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IPC IPC(8): E21D11/08E21D11/18E21D11/28E21D21/00
CPCE21D11/083E21D11/183E21D11/28E21D21/00
Inventor 王军顾薛青刘竞泽徐亮宋建新邱敬格郭毕钧左建平王正泽
Owner SHANDONG JIANZHU UNIV
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