Reinforcing bar rib structure for anchoring and shotcreting lining

By adopting a reinforced rib structure in anchor spray lining, combined with the design of the medicinal coil anchor rod and lining support, the shortcomings of anchor spray lining in terms of impermeability and flatness are solved, the rigidity and stability of the structure are improved, and the application scope is expanded.

CN222701987UActive Publication Date: 2025-04-01GUIZHOU TRANSPORTATION PLANNING SURVEY & DESIGN ACADEME
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Patent Information

Application Number
CN202421625320.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-10
Publication Date
2025-04-01
Estimated Expiration
2034-07-10

AI Technical Summary

Technical Problem

The existing anchor spray lining technology has shortcomings in terms of seepage resistance and flatness, especially in the case of groundwater treatment and local joint crack development, it is difficult to meet the high requirements of tunnel engineering.

Method used

A reinforced bar rib structure for anchor spray lining is adopted, including a first lining support for the first layer of initial support and a second lining support for leveling the reinforcement layer on the medicinal coil anchor. Through components such as reinforcement mesh, limiting devices, circumferential steel bars and longitudinal steel bars, the rigidity and stability of the structure are enhanced.

Benefits of technology

It improves the overall stiffness and stability of anchor spray lining, enhances the load-bearing capacity of the tunnel, reduces the risk of tunnel deformation and damage, and expands the application range of anchor spray lining, suitable for joint crack development sections.

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Abstract

The utility model discloses a steel bar rib structure for an anchoring and shotcreting lining, which comprises a first-layer primary support on a tunnel face, a leveling and reinforcing layer of the first-layer primary support and a cartridge anchor rod, and a first lining support of the first-layer primary support and a second lining support of the leveling and reinforcing layer are arranged at the outer end of the cartridge anchor rod; the overall rigidity and stability of the anchoring and shotcreting lining can be improved, the bearing capacity of a tunnel is enhanced, the risks of tunnel deformation and damage are reduced, meanwhile, the application range of the anchoring and shotcreting lining is widened, and the anchoring and shotcreting lining can also be adopted for joint fissure development sections.
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