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Tunnel primary support and waterproof and drainage combined system and construction method

A primary support and joint system technology, applied in drainage, tunnel, tunnel lining, etc., can solve the problems of unfavorable safe use and easy dripping, and achieve the effect of material saving, convenient use and investment saving

Active Publication Date: 2020-12-15
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the anchor-spray support does not set a waterproof layer, after the spray support of the tunnel, the arch, side wall, equipment box, etc. are prone to dripping water, and water seepage is not good for safe use.

Method used

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  • Tunnel primary support and waterproof and drainage combined system and construction method
  • Tunnel primary support and waterproof and drainage combined system and construction method
  • Tunnel primary support and waterproof and drainage combined system and construction method

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Such as Figure 1-4 As shown, the tunnel primary support and water-proof and drainage combined system of the present invention includes hollow anchor rods 1 radially arranged along the tunnel contour line 4, the hollow anchor rods 1 are filled with gravel 2, and the tunnel contour line 4 Shotcrete 3 is provided on the inner wall of the body; hollow anchor rod 1 is provided with perforated holes 7 and wrapped with geotextile 8; steel mesh 9 is arranged a...

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Abstract

The invention discloses a tunnel primary support and waterproof and drainage combined system and a construction method. The tunnel primary support and waterproof and drainage combined system comprisesa hollow anchor rod arranged along the radial direction of a tunnel contour line, the hollow anchor rod is filled with gravels, and the inner wall of the tunnel contour line is provided with shotcrete; the hollow anchor rod is provided with a punched hole and is wrapped with geotextile; and a reinforcing mesh is arranged along the shotcrete. The hollow anchor rod is filled with the gravels and wrapped with the permeable geotextile, underground water in a tunnel permeates into the hollow anchor rod, the tunnel is filled with the anchor rod, the rigidity of the tunnel is improved, and deformation is prevented. Besides, the H-shaped side of I-shaped steel is coated with waterproof paint, the I-shaped steel abuts against the rock wall and is installed at the lower side of the hollow anchor rod, underground water and seepage water in the hollow anchor rod are guided and drained through the I-shaped steel and a shotcrete U-shaped groove, the drainage function is achieved, and the supportingand stabilizing functions of the hollow anchor rod are not affected.

Description

technical field [0001] The invention relates to a combined system for initial support and drainage of tunnels, which belongs to the technical field of tunnel engineering. Background technique [0002] The purpose of tunnel waterproofing and drainage is to "prevent, drain, intercept, and block" water outside the tunnel lining to ensure that the tunnel is dry and free from water seepage, leakage, and dripping. [0003] In the prior art, the continuous innovation of tunnel waterproofing and drainage technology has always been the efforts of those skilled in the art. In the existing patent literature, the invention patent with the publication number CN107355242A jointly applied by the Institute of Railway Construction of the China Academy of Railway Sciences, the China Railway Economic Planning Institute, and the China Academy of Railway Sciences discloses a tunnel waterproof and drainage system, including : the arch wall waterproofing device arranged on the initial support lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D21/00E21D11/38E21F16/02
CPCE21D11/10E21D21/0026E21D11/38E21F16/02Y02E10/20
Inventor 胡兵华王传波李元明边洪坡
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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