Tunnel waterproof division structure employing spraying waterproofing technology and implementing method thereof

An implementation method and tunnel technology, which is applied to tunnels, tunnel linings, mining equipment, etc., can solve the problems of incomplete waterproof partitions of composite lining tunnels, and achieve effective governance

Active Publication Date: 2017-05-31
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the object of the present invention is to provide a tunnel waterproof partition structure and its implementation method that can solve the problem of incomplete waterproof partition in composite lining tunnel

Method used

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  • Tunnel waterproof division structure employing spraying waterproofing technology and implementing method thereof
  • Tunnel waterproof division structure employing spraying waterproofing technology and implementing method thereof
  • Tunnel waterproof division structure employing spraying waterproofing technology and implementing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: as image 3 The structure on the left in the form and Figure 4 ( image 3 As shown in 1-1 section in ), the waterproof partition can be realized in the tunnel waterproof system of the half-pack waterproof type.

[0034] The construction type of the tunnel waterproof partition in this embodiment is: divide the tunnel waterproof partition by the construction joint 6 position of the secondary lining 5 of the composite lining tunnel, and leave a certain width range between adjacent waterproof partitions to set waterproof partition measures; from Tunnel waterproof zoning measures shall be set in the range from the vault of the tunnel to the arch feet on both sides, and the tunnel waterproof zoning measures shall not be set in the inverted arch because there is no waterproof layer; When it is not serious, use such asfigure 1 Waterproof partition measures without grouting anti-seepage ring shown ( Figure 4 Waterproof zoning measures on the left side in the a...

Embodiment approach

[0035] Its implementation method is as follows:

[0036] (1) After the initial support construction of the tunnel, determine the position of the tunnel waterproof partition and the range of the partition according to the position of the construction joint 6 of the secondary lining 5;

[0037] (2) Depending on the conditions of the surrounding rock and groundwater, decide whether to implement the grouting pipe 10 and the grouting anti-seepage ring 11 in the waterproof partition;

[0038] (3) In the range from the arch top of the tunnel to the arch feet on both sides, apply a waterproof mortar leveling layer 8 for the waterproof partition parts;

[0039] (4) Lay non-woven fabric 3 and waterproof layer 4 in the first waterproof section from the vault of the tunnel to the arch feet on both sides;

[0040] (5) Spraying the waterproof layer 9 at the location of the waterproof partition;

[0041] (6) Pouring the secondary lining 5 of the first waterproof section and implementing co...

Embodiment 2

[0043] Embodiment 2: as image 3 The structure on the right in the form and Figure 5 ( image 3 As shown in Section 2-2 in ), the waterproof partition can be realized in the tunnel waterproof system of the all-inclusive waterproof type.

[0044] The structure type of the tunnel waterproof partition in this embodiment is: divide the tunnel waterproof partition by the construction joint 6 position of the secondary lining 5 of the composite lining tunnel, and leave a certain width range between adjacent waterproof partitions to set waterproof partition measures; Tunnel waterproof zoning measures are set up in the entire ring of the tunnel; when the surrounding rock is good or the groundwater leakage at the base of the initial support 6 is not serious, adopt the following measures: figure 1 Waterproof partition measures without grouting anti-seepage ring shown ( Figure 5 Waterproof zoning measures on the left side in the above); when the surrounding rock is relatively broken ...

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Abstract

The invention discloses a tunnel waterproof division structure employing spraying waterproofing technology and an implementing method thereof; the tunnel waterproof division structure comprises nonwoven fabric and a waterproof layer laid on the surface of a primary support sequentially, and the nonwoven fabric and the waterproof layer break apart at a construction joint of a secondary lining to form a waterproof division portion; the surface of the primary support at the waterproof division portion is provided with a waterproof mortar leveling layer, and a sprayed waterproof layer covers the waterproof mortar leveling layer and the nonwoven fabric and waterproof layer connected to the waterproof mortar leveling layer; waterproof segments are divided according to reserved positions of the construction joint of the secondary lining, the waterproof mortar leveling layer is sprayed to the surface of the waterproof division portion, the nonwoven fabric and the waterproof layer are laid in the waterproof segments, the sprayed waterproof layer at the waterproof division portion is constructed, and the secondary lining of the waterproof segments is cast finally. The waterproof division of a composite lined tunnel can be achieved, underground water is blocked from channeling in the nonwoven fabric and gap behind the waterproof layer along the longitudinal slope of a tunnel, and the tunnel that leaks can be treated more effectively and economically.

Description

technical field [0001] The invention relates to the technical field of tunnel waterproofing, in particular to a tunnel waterproof partition structure using spraying waterproof technology and an implementation method thereof. Background technique [0002] At present, in the field of tunnel engineering (especially the composite lining tunnel constructed by drilling and blasting method), the usual waterproof measures are to install all-inclusive or half-inclusive waterproof boards and non-woven fabrics between the primary support and the secondary lining. Cloth buffer. Since the waterproof board is usually not bonded to the secondary lining concrete, although it plays the role of isolation and lubrication to a certain extent, avoiding the cracking caused by the shrinkage of the concrete, but it also makes the groundwater flow between the secondary lining after the waterproof layer is partially damaged. The formation of "water channeling" expands the scope of leakage, making it...

Claims

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Application Information

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IPC IPC(8): E21D11/38
CPCE21D11/38
Inventor 蒋雅君李彬杨其新赵菊梅李国庆邱品茗
Owner SOUTHWEST JIAOTONG UNIV
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