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Semi-rigid semi-flexible anti-impact tunnel surrounding rock supporting structure under seismic zone and construction method thereof

A technology of surrounding rock support and construction method, which is applied in the direction of tunnels, tunnel linings, underground chambers, etc., can solve problems such as inability to guarantee construction safety, damage to surrounding rock structures in tunnels, and fracture of support structures, and achieve good results. Energy-absorbing effect, ensuring safe construction, and ensuring safety

Inactive Publication Date: 2020-12-01
THE SECOND ENG CO LTD OF CHINA RAILWAY 14TH CONSTR BUREAU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that due to the vibration of the external load, the support structure is likely to break or even collapse, resulting in damage or collapse of the surrounding rock structure in the tunnel, there are unsafe factors, and the safety of the construction cannot be guaranteed.

Method used

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  • Semi-rigid semi-flexible anti-impact tunnel surrounding rock supporting structure under seismic zone and construction method thereof
  • Semi-rigid semi-flexible anti-impact tunnel surrounding rock supporting structure under seismic zone and construction method thereof
  • Semi-rigid semi-flexible anti-impact tunnel surrounding rock supporting structure under seismic zone and construction method thereof

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Embodiment Construction

[0026] The present invention is specifically described below in conjunction with accompanying drawing:

[0027] Surrounding rock support structure and construction method of semi-rigid and semi-flexible impact-resistant tunnel under earthquake zone, consisting of surrounding rock body 1, porous metal wall panel 2, rigid support 3, pull rod 4, anchorage 5, pedestal 6, porous metal pad Plate 7, porous metal sleeve 8, baffle plate 9 and drill bit 10, porous metal wall plate 2 placed outside surrounding rock body 1, rigid support 3 placed outside porous metal wall plate 2, and 8 sets of porous metal sleeves On the pull rod 4, the porous metal backing plate 7 and the pedestal 6 are installed on the pull rod 4, the anchor 5 is placed outside the pedestal 6, the anchor 5 is installed at the end of the pull rod 4, the baffle plate 9 and the drill bit 10 are installed at the bottom of the pull rod 4.

[0028] Excavate the tunnel to 1.6-3.0m, drill the hole obliquely downward toward the...

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Abstract

The invention discloses a semi-rigid semi-flexible anti-impact tunnel surrounding rock supporting structure under a seismic zone and a construction method thereof. The semi-rigid semi-flexible anti-impact tunnel surrounding rock supporting structure is composed of a surrounding rock body, a porous metal wallboard, a rigid support, a pull rod, an anchorage device, a pedestal, a porous metal base plate, a porous metal sleeve, a baffle and a drill bit, wherein the porous metal wallboard is arranged outside the surrounding rock body, the rigid support is arranged outside the porous metal wallboard, the pull rod is sleeved with the porous metal sleeve, the porous metal base plate and the pedestal are mounted on the pull rod, the anchorage device is arranged outside the pedestal, the anchorage device is mounted at the end of the pull rod, and the baffle and the drill bit are mounted at the bottom of the pull rod. A porous metal material is added on a rigid supporting structure, thus the safety of the rigid support can be ensured, the safety of the surrounding body is improved, and the impact effect of an impact load on the supporting structure is reduced; the porous metal material can adsorb concrete, the cohesiveness of a whole anchor rod and a wall body is improved, after the supporting structure is impacted, the porous metal material has high rigidity after being compressed, safeconstruction of a tunnel can be guaranteed, and the stability in the tunnel construction process is improved.

Description

technical field [0001] The invention relates to a surrounding rock support structure, in particular to a semi-rigid and semi-flexible impact-resistant tunnel surrounding rock support structure in an earthquake zone and a construction method thereof. Background technique [0002] The basic function of the tunnel support system is to maintain the long-term stability of the surrounding rock. Tunnel engineering activities cause deformation and damage of the surrounding rock and stress redistribution. Due to the restraint of the surrounding rock itself, as the stress is released, most of the surrounding rock load is transferred to adjacent For strata, when the surrounding rock conditions are good, the accumulation degree of engineering response is low, there is no threat to construction safety, and essentially no support is required; however, when the surrounding rock cannot achieve self-balancing, external intervention is required, that is, timely Construct support structures to...

Claims

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Application Information

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IPC IPC(8): E21D11/15E21D21/00
CPCE21D11/15E21D21/0033
Inventor 张文坤王玉杰王双飞张珂王秋林房博张伟刘东升杜金州李红真王清标葛序泽王维施振跃姜彦博吴坤高阳袁月明
Owner THE SECOND ENG CO LTD OF CHINA RAILWAY 14TH CONSTR BUREAU CO LTD
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