Lateral Drainage Devices for Tunnel Rock Walls

Abstract

The invention discloses a horizontal drainage device for tunnel palisades. According to the horizontal drainage device for the tunnel palisades, a tunnel rock stratum and a primary lining supporting layer are included. The joint surface of the tunnel rock stratum and the primary lining supporting layer is provided with a water diversion pipe which comprises a pervious pipe wall and a water-proof pipe wall. The pervious pipe wall is arranged to be close to the tunnel rock stratum and located above the water-proof pipe wall. The water diversion pipe is arranged in a prolonged mode along the horizontal cross section of a tunnel arch wall, and pipe openings of the two ends of the water diversion pipe lead to drainage channels on the two sides of a tunnel. When the tunnel is excavated, stratum dripping water located on the joint surface of the tunnel rock stratum and the primary lining supporting layer can pass through the pervious pipe wall, permeates and drops into the water-proof pipe wall and then enters the drainage channels on the two sides of the tunnel under guiding of the water-proof pipe wall for concentrated discharge. The horizontal drainage device for the tunnel palisades is simple is structure, moreover, the phenomenon that a large amount of dropping water is generated when the tunnel is excavated can be effectively avoided, and accordingly the work progress of constructors is ensured.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a tunnel drainage device. Background technique [0002] During tunnel construction, it is necessary to build a supporting structure with sufficient strength for the rock wall in the cave, that is, the tunnel lining. The tunnel lining includes the primary lining and the secondary lining. While shotcreting, metal anchors are driven into the rock wall to form the primary lining. When the deformation of the primary lining structure meets the requirements, a layer of concrete is poured to form the secondary lining. [0003] In the process of tunnel lining construction, in order to ensure the drainage effect of the tunnel, it is generally necessary to install a drainage device between the primary lining and the secondary lining of the tunnel to guide the seepage water from the rock wall to the tunnel drainage channel for centralized discharge. However, when the tunnel is excavated, Du...

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Problems solved by technology

[0003] In the process of tunnel lining construction, in order to ensure the drainage effect of the tunnel, it is generally necessary to install a drainage device between the primary lining and the secondary lining of the tunnel to guide the seepage water from the rock wall to the tunnel drainage channel for centralized discharge. However, when the tunnel is excavated, Due to water seepage and dripping in the surrounding rock of the tunnel, especially at the top wall of the surrounding rock, a large amount of dripping water will bring inconvenience to the operators in the subsequent lining construction work

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