Construction method of dissymmetric double-linking-arch tunnel structure

A technology of tunnel structure and construction method, which is applied in the direction of tunnel, tunnel lining, earthwork drilling and mining, etc. It can solve the problems of unguaranteed construction safety, large amount of abandoned works, and slow construction progress, so as to achieve high quality and safe construction Good performance and fewer construction steps

Active Publication Date: 2015-02-18
中国建筑土木建设有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for an asymmetrical double-arch tunnel structure, to solve the technical problems in the traditional construction method that the workload is large, the amount of abandoned works is large, the cost is high, the construction progress is slow, and the construction safety cannot be guaranteed

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  • Construction method of dissymmetric double-linking-arch tunnel structure
  • Construction method of dissymmetric double-linking-arch tunnel structure
  • Construction method of dissymmetric double-linking-arch tunnel structure

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Embodiment Construction

[0046] The embodiment is shown in Figures 1-12. An asymmetrical double arch tunnel has a cross-section of a small hole and a large hole, including a small hole 1 and a large hole 4 connected to it. The surrounding rock of the small hole is Advance support 8, small hole initial support 2, small hole waterproof layer 11 and small hole secondary lining 3 are provided in sequence, and the surrounding rock of the large hole is provided with advance support 8, large hole initial support 5, and large hole The waterproof layer and the secondary lining 7 of the large hole. At the junction of the small hole and the large hole, at least two primary support connectors 23 are pre-embedded on the steel component of the primary support of each small hole, that is, the primary support steel component 22 of the small hole. The horizontal section at the arch foot of the initial support steel member of the small hole extends toward the direction of the large hole, and a steel member connecting pl...

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Abstract

Disclosed are a dissymmetric double-linking-arch tunnel structure and a construction method of the dissymmetric double-linking-arch tunnel structure. The structure comprises a small cave and a big cave, wherein the big cave is connected with the small cave. The construction method of the dissymmetric double-linking-arch tunnel structure successively includes the following steps: constructing a small cave advance support, constructing a small cave preliminary support, conducting construction of a preliminary support piece being embedded on the small cave preliminary support, constructing a small cave secondary lining, constructing a big cave advance support, constructing a big cave preliminary support, constructing big cave temporary middle partitioning walls, conducting integral connection of preliminary support connecting pieces on the big cave preliminary supporting and the small cave preliminary supporting, dismantling the big cave temporary middle partitioning walls at interval, and constructing a big cave secondary lining. The dissymmetric double-linking-arch tunnel structure and the method resolve the technical problems that in a traditional dissymmetric double-linking-arch tunnel construction process, abandoned work amount is large, cost is high, construction process is slow, and construction safety cannot be guaranteed.

Description

technical field [0001] The invention relates to a tunnel engineering structure and a construction method thereof, in particular to a tunnel structure with an asymmetrical double-arch tunnel and a construction method thereof. Background technique [0002] Due to the characteristics of tunnel engineering, when constructing subways, highways, railways and other projects underground, it is necessary to set turning lines or staggered lanes within a certain distance to ensure the normal and safe operation of vehicles. This part of the turning line is generally designed as an asymmetrical double-arch tunnel cross-section. Choosing a reasonable construction method is of great significance to ensure its construction safety. Due to its irregular cross-section and relatively short length, large mechanical equipment such as shield machines cannot be used for construction. For tunnels with a double-arch cross section, the intermediate pilot pit method is generally adopted, that is, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/14E21D9/00E21D11/00
Inventor 肖龙鸽孙贵华杨昆鹏傅启路杨兵
Owner 中国建筑土木建设有限公司
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