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Novel mesh anchor structure

An anchor structure and a new type of technology, applied in the installation of bolts, shaft lining, tunnel lining, etc., can solve the problems of occupying large tunnel clearance and time, affecting the normal operation of the tunnel, and long construction period.

Inactive Publication Date: 2020-06-05
成都天佑智隧科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned maintenance and reinforcement technology, the construction process is cumbersome, the construction period is long, and the cost is high. Some measures need to occupy a large tunnel clearance and time, which affects the normal operation of the tunnel.

Method used

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Embodiment Construction

[0017] The present invention will be described in detail below in combination with specific embodiments.

[0018] Network anchor structure of the present invention such as Figure 1 to Figure 6 As shown, the construction plan includes a rectangular mesh 1 and expansion bolts 2, and the expansion bolts 2 are used to anchor the mesh 1 on the inner surface of the concrete. The expansion bolts 2 are arranged in a triangle, and the expansion bolts 2 are corrosion-resistant high-strength expansion bolts; Image 6 As shown, the construction plan includes a rectangular mesh 1 and anchor rods 3, and the anchor rod 3 is used to anchor the mesh 1 on the inner surface of the surrounding rock, and the anchor rods 3 are arranged in a triangular shape.

[0019] When the anchoring object is a concrete structure, holes are drilled at the node of the mesh 1 (or at the strip if appropriate) according to the actual support structure crack damage, the hole spacing is adjusted according to the lini...

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PUM

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Abstract

The invention relates to the technical field of tunneling engineering, in particular to a novel mesh anchor structure. The structure comprises a mesh, expansion bolts and anchor rods, wherein the meshis anchored on the inner surface of concrete by adopting the expansion bolts or anchored on the inner surface of surrounding rock by adopting the anchor rods. The mesh anchor structure not only can be taken as a novel reinforcement structure for a secondary lining of a tunnel, the mesh anchor structure and the tunnel lining structure are combined to form a coordinated deformation system, the reinforcement effect for the secondary lining of the tunnel is remarkably improved, furthermore, the mesh structure can be used as a part of primary support during constructing of the tunnel, the mesh anchor structure and the surrounding rack constitute a combined action system, so that deformation of the surrounding rack is released, deformation pressure of the surrounding rack is reduced, and hazardcaused by large deformation is reduced; and impact kinetic energy of rockburst can be absorbed, and the rockburst phenomenon is protected.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering and relates to a novel network anchor structure. Background technique [0002] With the gradual improvement of underground engineering technology, tunnel construction in my country has been welcomed more and more. The support of tunnel chamber is a crucial link. Anchor support is used to strengthen the strength and self-stabilization of the surrounding rock. When the surrounding rock and the primary support system gradually stabilize, secondary lining is adopted to ensure the stability and safety of the tunnel during the design period. During tunnel excavation, the surrounding rock often has risks such as block loss, excessive deformation of the cavern, and rockburst; for concrete structures, concrete often cracks, misses, and blocks due to construction technology and geological environment. And so on. Due to the different construction years of the tunnels that have been built in my co...

Claims

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Application Information

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IPC IPC(8): E21D11/15E21D11/10E21D20/00
CPCE21D11/107E21D11/152E21D20/00
Inventor 仇文革卢锋郭秉正李畅
Owner 成都天佑智隧科技有限公司