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Method for concrete pipe segment lining structure capable of adapting to surrounding rock deformation

A surrounding rock deformation and concrete technology, which is applied in shaft lining, tunnel lining, earthwork drilling and mining, etc., can solve the problems of small formation deformation, segment lining structure damage, and limited space for surrounding rock deformation, so as to suppress the deformation of surrounding rock Effect

Active Publication Date: 2012-10-17
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology

[0007] The problem with the above two treatment methods is that the deformation space for the surrounding rock is limited, and when the deformation of the surrounding rock exceeds the preset range, the segment lining structure may still be damaged due to excessive load
[0010] 2. The adaptable ground deformation is small: the gap between the excavation contour of the tunnel and the outer contour of the lining is small, generally no more than 15cm, and after considering the compressible materials such as pea stones filled, the ground deformation that can be adapted is only It is 5-10cm, and cannot fully adapt to the extrusion deformation of the bottom layer

Method used

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  • Method for concrete pipe segment lining structure capable of adapting to surrounding rock deformation
  • Method for concrete pipe segment lining structure capable of adapting to surrounding rock deformation
  • Method for concrete pipe segment lining structure capable of adapting to surrounding rock deformation

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0024] A method for making the concrete segment lining structure adaptable to the deformation of the surrounding rock, the steps of which are as follows:

[0025] 1), such as figure 1 As shown, after the tunnel excavation, the segment lining is assembled to form a ring-closed lining structure 1, and then the anchor rod 2 is drilled radially around the surrounding rock through the segment, and the radial anchor rod 2 penetrates Pass through the segment lining 1 and be fastened by the surrounding rock; then fill the gap 4 behind the segment wall with grouting and wait for solidification. After the filler in the gap 4 behind the segment wall is solidified, remove a segment 5 in the lining structure 1, so that the closed segment lin...

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Abstract

The invention discloses a method for concrete pipe segment tunnel lining structure capable of adapting to surrounding rock deformation. The method comprises the following step of converting a sealed pipe segment lining structure into a combined opened structure of the pipe segment lining and an anchor rod, namely, the stress of an anchor rod is gradually increased along with the increase of the surrounding rock deformation so that the surrounding rock deformation is restrained, the mechanical equilibrium of the combined structure and a surrounding rock is realized, extrusion stress of a stratum is further released, the pipe segment lining structure greatly adopt to the stratum extrusion deformation, and the pipe segment lining structure is effectively protected.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a method for a concrete segment lining structure that can adapt to the deformation of surrounding rock. Background technique [0002] Part of the tunnels constructed by tunnel boring machine (TBM) in the rock strata adopt segmented lining: during tunnel construction, the lining blocks prefabricated on the ground are assembled into a lining ring by the segmental assembling equipment, and the lining ring wall is combined with The gaps between the formations are backfilled densely, and the closed ring segment lining bears the pressure of groundwater and surrounding rock. Segment lining rings are generally composed of several lining blocks, which are formed into a whole by proper connection between blocks and between rings. [0003] After the excavation of the tunnel, due to the stress release of the surrounding surrounding rock, the surrounding rock will gradually defor...

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Application Information

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IPC IPC(8): E21D11/10E21D20/00
Inventor 肖明清邓朝辉鲁志鹏资谊游龙飞隗建波王春梅
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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