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A shield tunnel composite lining structure and method

A technology for composite lining and shield tunneling, which is applied in tunnel lining, tunnel, shaft lining and other directions, can solve the problems of waterproofing of shield tunnel segment joints, and achieve the effect of simple construction operation, good overall performance and improved waterproof performance.

Active Publication Date: 2022-02-08
CHINA RAILWAY SHISIJU GROUP CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a shield tunnel composite lining structure and method, which can solve the problem of waterproofing of shield tunnel segment joints, maintenance and treatment of water leakage in the later stage, and the problem of secondary lining structure faults. The waterproof effect is good, the construction is simple, and the leaking parts can be found in time and accurately, so as to realize the dual reinforcement of tunnel waterproofing and tunnel support

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  • A shield tunnel composite lining structure and method
  • A shield tunnel composite lining structure and method
  • A shield tunnel composite lining structure and method

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Embodiment 1

[0041] This embodiment provides a shield tunnel composite lining structure, such as Figure 1-Figure 5 As shown, it includes a segment layer, a waterproof layer 2 and a second mortar lining. The segment layer includes several segments 1, which are connected in the circumferential direction to form a ring structure, and several ring structures are spliced ​​longitudinally to form a hollow cylindrical structure; The circumferential joints between the segments 1 form a circumferential joint, and the longitudinal joints form a longitudinal joint. The waterproof layer 2 is arranged at the circumferential connecting seam and the longitudinal connecting seam. The circumferential connecting seam of the second lining shell 3 and the circumferential connecting seam of the segment 1 are arranged in a staggered manner.

[0042] In this embodiment, on the basis of sealing treatment with sealing strips at the traditional joints, an anti-adhesive waterproof layer 2 is used at the circumfere...

Embodiment 2

[0053] This embodiment provides a construction method for a shield tunnel composite lining structure, comprising the following steps:

[0054] (1) The segment 1 is installed on the shield machine, and the segment 1 is connected by bolts in the circumferential direction, and connected with the longitudinal rib hole by the longitudinal rib 12 in the longitudinal direction.

[0055] (2) A waterproof layer 2 is laid at the joints between the segments 1, and the waterproof layer 2 has a built-in water leakage monitoring device. The structure of the water leakage monitoring device is as described in the first embodiment.

[0056] (3) The second lining shell 3 is installed on the mechanical arm of the shield machine. Through the cooperation of the groove 7 on the second lining shell 3 and the protrusion 6, a tight overlap is realized, and the gap is very small. In particular, the second lining shell 3 The circumferential connecting seam and the circumferential connecting seam of the ...

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Abstract

The invention provides a shield tunnel composite lining structure and method, the technical solution of which is: comprising segments, a waterproof layer and a second mortar lining, the waterproof layer is arranged at the circumferential joints and longitudinal joints between the segments; The second mortar lining is detachably connected to the segment, and the circumferential joints between the second mortar lining and the circumferential joints between the segments are arranged in a staggered manner; a water leakage monitoring device is installed in the waterproof layer. The invention can solve the problems of waterproofing of shield tunnel segment joints, maintenance and treatment of leaking water in the later stage, and construction problems such as second-lining structure staggering. Double reinforcement of tunnel waterproofing and tunnel support.

Description

technical field [0001] The invention relates to the technical field of shield tunnels, in particular to a composite lining structure and method for shield tunnels. Background technique [0002] The interior of the tunnel constructed by the shield method is lined with segments with a certain radian. There are segment ring seams and segment longitudinal seams between the segments. Sealing with sealing strips can meet the waterproof requirements under ordinary groundwater conditions. . However, in shield tunnels with large water-rich sections or super-large sections, due to the abundant groundwater, high water pressure, long waterproof joints, and the influence of construction bias pressure, it is very easy for the gasket to be not tightly sealed and seepage occurs locally at the segment joints. Leakage phenomenon. Moreover, during the construction of the shield tunnel, gaps are easily formed between the formwork, and there is a problem of leakage gaps; after the formwork has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/08E21D11/38E21D11/10E21D11/00G01M3/16
CPCE21D11/08E21D11/083E21D11/385E21D11/10E21D11/003G01M3/165
Inventor 梁尔斌王军李克金李秀东陈健谭相波王志康李勋赵佩坤韩健勇吴圣智
Owner CHINA RAILWAY SHISIJU GROUP CORP