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Tunnel maintainable type pressure reducing and water draining method and device for water rich stratum

A technology for water-rich strata and tunnels, which can be used in drainage, safety devices, earth-moving drilling, etc., to solve problems such as water leakage and blockage of tunnel drainage systems, and achieve the effect of not easy to block and good drainage effect.

Inactive Publication Date: 2014-09-24
CCCC SECOND HIGHWAY CONSULTANTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and to provide a maintainable decompression and drainage method for tunnels in water-rich strata, which is easy to implement and easy to operate, and solves the problem of tunnel drainage system block water leakage problem

Method used

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  • Tunnel maintainable type pressure reducing and water draining method and device for water rich stratum
  • Tunnel maintainable type pressure reducing and water draining method and device for water rich stratum
  • Tunnel maintainable type pressure reducing and water draining method and device for water rich stratum

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Embodiment 1

[0027] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0028] A tunnel maintainable decompression and drainage method for water-rich formations, the steps of which are:

[0029] Step 1. Set drainage groove 2 along the tunnel deformation joint (construction joint) 1 within the lining range of 4 or 5m above the cable trench cover plate 10, and measure the length of the drainage groove 2, which is about 4.2 or 4.5 or 4.8 or 5.0 or 5.2m, select a semicircular pipe 3 whose length is 20 or 25 or 30 or 35 or 40cm longer than the drainage tank;

[0030] Step 2, constructing five diversion holes 4 equidistantly toward one side of the surrounding rock in the drainage channel 2, and introducing water from the surrounding rock 16 into the drainage channel 2 through the diversion holes 4;

[0031] Step 3, wrapping the semicircular pipe 3 with a waterproof board 5 of non-woven fabric, and fixing the semicircular pipe 3 on the wall 2 o...

Embodiment 2

[0035] according to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 It can be seen that a maintainable decompression and drainage device for tunnels includes deformation joints (construction joints) 1, drainage grooves 2, semicircular pipes 3, water diversion holes 4 (10), waterproof boards 5, nails 6, and water collection tanks. 7. Bellows 8, drainage ditch 9, cable trench cover 10, rigid polyurethane foam 11 (purchased from the market), two-component polysulfide sealant 12 (purchased from the market), galvanized steel plate 13, self-tapping screws 14, Screw hole 15, surrounding rock 16, primary lining 17, secondary lining 18. The connection relationship is: within 4 or 5m of the lining of the cable trench cover plate 10, a drainage groove 2 is arranged along the ring direction of the tunnel deformation joint (construction joint) 1, and the length of the drainage groove 2 is measured. The drainage groove 2 is about 4.2 or 4.5 Or 4.8 or 5.0 or 5.2m, choose a semic...

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Abstract

The invention discloses a tunnel maintainable type pressure reducing and water draining method and device for a water rich stratum. The method comprises the steps that (A) a water draining trough is annularly formed along a tunnel lining deformation seam; (B) water diversion holes are formed in the water draining trough in the surrounding rock direction; (C) a semi-circular pipe is fixed in the water draining trough through fasteners, and a water draining channel is formed; (D) a water collecting trough is reserved in the bottom of the semi-circular pipe, and water is led into an edge gutter through a corrugate pipe. The water draining trough is formed in a cable duct cover plate, the semi-circular pipe is arranged in the water draining trough, the water diversion holes are formed in one side of the water draining trough in an even spaced mode, a waterproof plate with non-woven fabric warps the semi-circular pipe, and the semi-circular pipe is fixed to the wall of the water draining trough on the two sides of the waterproof plate through the fasteners. The water collecting trough is connected with the semi-circular pipe through the corrugate pipe, and the edge gutter is connected with the water collecting trough. The method is easy to implement, operation is easy and convenient, blocking is not prone to occurring, and the water draining effect is good. Water pressure behind a tunnel lining and a second lining can be effectively reduced. The problem of water leakage caused by blocking of a tunnel water draining system is solved.

Description

technical field [0001] The invention relates to the technical field of tunnel drainage, more specifically to a maintainable decompression drainage method for tunnels, and also relates to a maintainable decompression drainage device for tunnels, which is suitable for the design of tunnels in water-rich strata and the occurrence of water leakage. Tunnel management. Background technique [0002] The drainage system of the tunnel is an important link in the process of tunnel construction, normal use and safe operation. The problem of remediation after water leakage in the tunnel is also a technical problem faced by engineering circles at home and abroad. Especially in the groundwater outburst strata, high water pressure strata and subsea tunnels, the drainage system is particularly important, which is directly related to the success or failure of the tunnel construction and the function of use. [0003] The tunnels built in the past are relatively backward in terms of drainage ...

Claims

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Application Information

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IPC IPC(8): E21F16/02
Inventor 郭小红刘继国李波程勇拓勇飞魏龙海
Owner CCCC SECOND HIGHWAY CONSULTANTS CO LTD
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