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Segment lining structure adapting to large surrounding rock deformation and construction method thereof

A large deformation and segmental technology, applied in the field of tunnel assembled lining structure, can solve the problems of difficulty in determining the removal length of segmental lining, destroying the integrity of segmental structure, and heavy workload of segmental segments, so as to avoid segmental structure failure. stability, reduce cost and complexity, and reduce the effect of engineering

Pending Publication Date: 2019-04-12
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology

However, the method of the concrete segment lining structure has the following problems: 1) The workload of setting the anchor rod and removing the segment is relatively large, and setting the anchor rod destroys the integrity of the segment structure; 2) The segment lining is removed along the ring direction The length is difficult to determine, and can only be dismantled in excess

Method used

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  • Segment lining structure adapting to large surrounding rock deformation and construction method thereof
  • Segment lining structure adapting to large surrounding rock deformation and construction method thereof
  • Segment lining structure adapting to large surrounding rock deformation and construction method thereof

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0041] attached figure 1It is a schematic diagram of a segment lining structure adaptable to large deformation of surrounding rock in an embodiment of the present invention, using a circular cross-section steel pipe as a compression member. It is mainly composed of a base segment 1 and a shrinkable joint 6. The segment types used in the base segment 1 include reinforced concrete segments, steel...

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Abstract

The invention discloses a segment lining structure adapting to large surrounding rock deformation. The structure comprises a foundation segment (1) and a retractable joint (6), the retractable joint (6) comprises an inner side end panel (2) and an outer side end panel (5), the inner side end panel (2) is fixedly connected with one side surface of the foundation segment (1), the retractable joint (6) is provided with a plurality of compressible layers, and the compressible layers are provided with deformable compression components (3). The invention further discloses a construction method of the structure. The segment lining structure adapting to large surrounding rock deformation comprises two parts, namely the foundation segment and the retractable joint, the retractable joint is providedwith the plurality of compressible layers, the compressible layers are provided with the deformable compression components, thus when surrounding rock generates large deformation, the retractable joint is subjected to an extrusion effect of adjacent segments at two sides, the compression components generate compression deformation, space is provided for surrounding rock deformation, surrounding rock stress is released, and the tunnel segment structure is prevented from being damaged.

Description

technical field [0001] The invention belongs to the technical field of tunnel assembled lining structures, and more particularly relates to a segmental lining structure adaptable to large deformation of surrounding rock and a construction method thereof. Background technique [0002] Tunnels constructed by the shield tunneling machine method mainly use prefabricated segment linings. During construction, a certain number of segment lining blocks are assembled into rings in the tunnel boring machine and connected by ring bolts. Longitudinal bolting is used to finally form a closed lining structure. The segment ring is generally composed of several A-type segments (or standard blocks), two B-type segments (or adjacent blocks) and a K-type segment (or capping block) that can be capped at the end. Under normal circumstances, the larger the diameter of the shield tunnel is, the more segments are used in the segment ring. [0003] Due to the constraints of the external surroundin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D11/18
CPCE21D11/083E21D11/18
Inventor 肖明清王少锋孙文昊邓朝辉薛光桥龚彦峰徐晨
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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