Karst rich water tunnel water-proof and drainage construction method

A technology for water-rich tunnels and construction methods, applied in drainage, tunnels, tunnel linings, etc., can solve problems such as difficult construction, potential safety hazards, and poor application, and achieve the effects of improving work efficiency, reducing project cost, and improving efficacy

Active Publication Date: 2018-06-29
CHINA RAILWAY ERJU 1ST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for waterproofing and drainage of karst water-rich tunnels, so as to solve the problem that the construction of karst water-rich tunnels similar to Tieguishan Tunnel is difficult, the existing construction methods are not well applicable, and there are many potential safety hazards. question

Method used

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  • Karst rich water tunnel water-proof and drainage construction method
  • Karst rich water tunnel water-proof and drainage construction method
  • Karst rich water tunnel water-proof and drainage construction method

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Embodiment

[0032] Waterproof and Drainage Construction of Karst Water-rich Tunnel

[0033] 1.1 Surface treatment of surrounding rock or primary support

[0034] Before laying the waterproof layer, the base surface (primary support surface) should be inspected for water leakage, exposed protrusions and surface unevenness.

[0035] 1.1.1 Use grouting to block water or drain blind pipes, drainage boards, etc. to introduce water into the side ditch at the leaking water, so as to keep the base surface without obvious water leakage.

[0036] 1.1.2 For the protruding part of the anchor rod head, steel pipe head, steel bar head, etc. exposed to the base surface, cut it off first, then use a hammer to rivet it flat, and apply mortar.

[0037] 1.2 Drainage blind pipe setting

[0038] The back of the secondary lining waterproof board of the whole tunnel is provided with a circular φ50 single-wall perforated corrugated pipe (wrapped in non-woven fabric) drainage blind pipe, and a φ80 single-wall p...

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Abstract

The invention discloses a karst rich water tunnel water-proof and drainage construction method. By adopting the principle of "combination of prevention, drainage, interception and blockage, adaptationto local conditions and comprehensive treatment" and a water-proof method of combining water-proof with drainage is introduced to ensure the realization of project safety and quality objectives. Thekarst rich water tunnel water-proof and drainage construction method solves the problems that the difficulty of construction of a karst rich water tunnel such as an iron helmet mountain is high, the existing construction method cannot be applied well, and many potential safety hazards exist. The invention belongs to the technical field of tunnel construction.

Description

technical field [0001] The invention relates to a construction method for waterproofing and drainage of karst water-rich tunnels, belonging to the field of tunnel construction. Background technique [0002] The Tieguishan Tunnel is located in the peak valley of the Yunnan-Guizhou Plateau. The line passes through the mountain body at a height of 1140-1490m, and the maximum buried depth of the tunnel is 380m. Water volume 69408m 3 / sky. The secondary lining arch, side wall and inverted arch of the whole tunnel are made of waterproof concrete, and the concrete impermeability grade is P12. The tunnel is a typical karst water-rich tunnel. To ensure the construction quality of waterproofing and drainage, and to ensure that the secondary lining does not leak water, there is no construction technology similar to tunnels at home and abroad, and there is no construction method for reference, so the construction is extremely difficult. Contents of the invention [0003] The purpo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/10E21F16/02
CPCE21D11/105E21D11/381E21F16/02
Inventor 谢方成耿开亮易峰何复生周顺畅甑小辉邹伟徐义涛何宇航张阳秦慧蓉
Owner CHINA RAILWAY ERJU 1ST ENG
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