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Tunnel top waterproof structure and implementation method thereof

A technology for waterproof structures and tunnels, applied in tunnels, tunnel linings, earth-moving drilling, etc., can solve problems such as water leakage, and achieve the effect of high construction efficiency

Active Publication Date: 2019-02-15
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of water leakage in the construction of tunnel engineering, a waterproof structure and implementation method at the top of the tunnel are proposed

Method used

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  • Tunnel top waterproof structure and implementation method thereof
  • Tunnel top waterproof structure and implementation method thereof

Examples

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Effect test

Embodiment 1

[0045] combine figure 1 , figure 2 with image 3It shows a waterproof structure at the top of the tunnel, including a concrete layer 1 in contact with the plain soil at the top of the tunnel, a waterproof structure layer and a structural support layer 3, wherein: the concrete layer 1 is formed by mixing acrylic waterproof material, concrete and defoaming agent Complete, can play the waterproof of the first layer of wall. The concrete layer 1 is connected to the plain soil as a whole by providing a longitudinal anchor bar 11 and a frame anchor bar 12. The longitudinal anchor bar 11 is fixedly connected inside the plain soil and protrudes a part, and the frame anchor bar 12 is 100-150mm away from the plain soil The protruding part of the longitudinal anchor bar 11 is welded into a mesh structure, which increases the connection force between the concrete layer 1 and the plain soil, and prevents the concrete layer 1 from falling off; the concrete layer 1 is pre-embedded with me...

Embodiment 2

[0047] The invention also discloses a method for implementing the waterproof structure at the top of the tunnel, which includes the following steps:

[0048] Step 1. Construct the concrete layer 1

[0049] E1. Flatten the degradable film on the top of the tunnel;

[0050] E2. Fix the longitudinal anchor bar 11 through the degradable film in the plain soil at the top of the tunnel, and at the same time, overlap or weld the frame anchor bar 12 with the longitudinal anchor bar 11 at a distance of 100-150 mm from the plain soil to form a frame support network;

[0051] E3. Spray the concrete once on the frame support net through the concrete pump to form the concrete layer 1, and at the same time, pre-bury one end of the bolt 4 inside the concrete layer 1 according to the design size of the drawing;

[0052] E4. Leveling the concrete layer 1 by using a pre-made steel plate with a U-shaped cross-section. Before the leveling process, cover the upper surface of the steel plate with ...

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Abstract

The invention discloses a tunnel top waterproof structure and an implementation method thereof, and belongs to the technical field of building waterproof. The tunnel top waterproof structure comprisesa concrete layer, a waterproof material layer, a structural supporting layer and bolts for fastening the layers. The waterproof material layer and the structural supporting layer adopt a splicing prefabricated type, the splicing gap of the waterproof material layer and the contact surface between the layers and the bolts are subjected to waterproof treatment, and thus the problem of water permeating from the contact gap is solved; and the waterproof material adopts layered and integrated types, multiple waterproof is achieved, and a main material of the waterproof material is a flexible material, so that the problem of water leakage caused by cracking or deformation of the concrete layer is effectively solved.

Description

technical field [0001] The invention belongs to the field of tunnel waterproofing, and in particular relates to a tunnel top waterproof structure and an implementation method. Background technique [0002] In the construction of urban subway projects, the waterproof structure design of shallow buried excavation basically adopts the all-inclusive waterproof structure at present, that is, the waterproof layer is set along the entire section of the tunnel support lining, and the drainage in the tunnel is not considered. Since the groundwater level is generally shallow, the water leakage of the structure is not obvious due to the dewatering measures taken during the construction period. After the tunnel construction is completed and the dewatering well is closed, the water leakage of the all-inclusive waterproof structure is more common, especially in the water-rich stratum. This situation is more obvious. After encountering water leakage, grouting sealing measures are generall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/10
CPCE21D11/10E21D11/38
Inventor 王瀚赵海峰齐大军陶家长
Owner CHINA MCC17 GRP
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