Central draining construction method of highway tunnel

A technology of expressways and construction methods, applied in drainage, tunnels, tunnel linings, etc., can solve the problems of easy damage of concrete drainage pipes, and achieve the effect of good integrity, safety, high quality and high efficiency, and smooth drainage

Inactive Publication Date: 2019-10-25
CHINA RAILWAY SIXTH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problem that the existing central drainage construction method of the expressway tunnel, the concrete drain pipe in the central drainage ditch is easily damaged during the tunnel construction process, and provides an improved central drainage construction method of the expressway tunnel to overcome the prior art existing problems

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  • Central draining construction method of highway tunnel
  • Central draining construction method of highway tunnel

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Embodiment Construction

[0010] The construction method for the central drainage of expressway tunnels is realized by the following steps: 1) Constructing a central drainage groove in the inverted arch concrete filling, the central drainage groove is composed of a narrow groove 1 at the bottom, a wide groove 2 at the top and a combination of the two 2) The horizontal drainage pipe 4 of the tunnel and the horizontal water guide pipe 5 of the road extend and connect to the narrow groove 1 at the lower part of the central drainage ditch; 3) Lay a cover plate 6 on the central drainage ditch , both sides of the cover plate 6 are respectively supported on the horizontal support surface 3 on the two side walls of the central drainage ditch; 4) backfill concrete in the wide groove 2 above the cover plate 6 to the concrete filling surface of the inverted arch.

[0011] During specific implementation, in step 1), the construction of the central drainage trench is carried out on the reinforced invert (the tunnel ...

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Abstract

The invention relates to highway tunnel draining construction, in particular to a central draining construction method of a highway tunnel. The problem that a concrete draining pipe in a central draining ditch is easily damaged in the existing central draining construction method of the highway tunnel is solved. The construction method is realized by the following steps: 1, building the central draining ditch in inverted arch concrete filler, wherein the central draining ditch consists of a lower narrow ditch, an upper wide ditch and a horizontal support surface carrying out transition betweenthe lower narrow ditch and the upper wide ditch; 2, enabling a transverse draining pipe and a road surface transverse water guide pipe of the tunnel to extend to and communicate with the narrow ditchat the lower part of the central draining ditch; 3, paving a cover plate on the central draining ditch, and separately supporting the two sides of the cover plate on the horizontal support surface onthe two side walls of the central draining ditch; and 4, backfilling the wide ditch above the cover plate with concrete to the inverted arch concrete filler surface. Water is guided into the narrow groove at the lower part of the central draining ditch by the transverse draining pipe and the road surface transverse water guide pipe and directly discharged out of the tunnel.

Description

technical field [0001] The invention relates to expressway tunnel drainage construction, in particular to a central drainage construction method for expressway tunnels. Background technique [0002] In the construction of highway tunnels, there are many factors that affect the quality of highway tunnel construction, among which water is one of the most important factors. Tunnel waterproof and drainage is an important link in the construction quality of tunnel engineering. One of the larger links has always been valued by people. In waterproof and drainage construction, central drainage construction is particularly important. [0003] For the central drainage construction of existing expressway tunnels, a central drainage trench with a trapezoidal cross-section is constructed on the inverted arch concrete filling. Concrete drainage pipes with seepage holes evenly distributed on the upper part are arranged in the central drainage trench. The horizontal drainage pipes of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02E21D11/10
CPCE21D11/105E21F16/02
Inventor 智凯毅魏金山刘俐刘俊宏樊陈科刘财源
Owner CHINA RAILWAY SIXTH GRP CO LTD
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