Tunneling construction Ttechnology for constructing mined tunnelof by adopting composite tooth support through mining method

A technology of tunnel construction and mining method, applied in tunnels, tunnel linings, mining equipment and other directions, can solve the problems of easy deformation of segments, difficult to control the line shape, etc., to achieve the effect of fast and convenient construction, time saving, good positioning and quality

Active Publication Date: 2011-04-27
CHINA RAILWAY 16TH BUREAU GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the construction of the shield tunnel through the mine method, in view of the problems that the inner segment of the shield tunnel through the mine method

Method used

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  • Tunneling construction Ttechnology for constructing mined tunnelof by adopting composite tooth support through mining method
  • Tunneling construction Ttechnology for constructing mined tunnelof by adopting composite tooth support through mining method

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] 1. The technological process of the composite tooth support method through the mine tunnel:

[0015] (1) Processing composite tooth abutment (material is steel);

[0016] (2) Open up the original grouting hole after the segment is installed, use the original grouting hole to install the composite tooth abutment as a support, let the segment fall naturally on the guide platform after it is separated from the shield tail, and use the composite tooth abutment and longitudinal The pulling force of the bolts together properly restrict the segments;

[0017] (3) Spray pea gravel between the lower part of the segment and the tunnel wall and synchronously inject grout during the excavation of the shield machine;

[0018] (4) The shield machine passes through the mine method tunnel, and the roof support is installed as follows figure 1 As shown in Fig. 1, through the excavation section, the shield machine properly applies thrust to compress the segments in the tunnel, tighten ...

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Abstract

The invention discloses a technology for constructing a mined tunnel by adopting a composite tooth supporttunneling construction technology of composite tooth support through mining method, which comprises a composite tooth support processing technology, a segment staggering and concave-convex phenomenon control technology, a segment waterproofing technology, a shield thrust control measurement and a tracing and monitoring technology. The technology for constructing the mined tunnel by adopting the composite tooth supportcomposite tooth support through mining method is characterized in that, in the composite tooth support processing technology, composite tooth supports are installed in original grouting holes and used for supporting, and the tension of the composite tooth supports and vertical bolts controls segments; in the segment staggering and concave-convex phenomenon control technology, combines the pea gravel spraying and is combined with the shield tail synchronous grouting; in the segment waterproofing technology, water swelling stopper is installed on single edge of each segment; the shield thrust control measurement comprises guide platform quality control, shield axis control and shield stage thrust control; and the tracing and monitoring technology comprises tunnel segment attitude instant tracing and monitoring and deformation detection. The composite tooth support through mining methodinvention can shorten construction period and achieve maximum staggering between two segments and maximum staggering between two rings and has the advantages of low cost.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to the tunnel construction technology of a composite tooth-supported roof mining method for shield construction. Background technique [0002] In the past, the shield method used to pass through the mining method tunnel, that is, "empty push", passing through the excavated mining method tunnel and performing lining support. The existing problems are: [0003] 1. Slow construction speed [0004] In the mining method tunnel, the shield machine pushes forward, splits the segment, and sprays pea gravel to the back of the segment to fill the gap between the segment and the tunnel, and synchronously injects the traditional method of double slurry through the mining method tunnel. The construction speed of this method is very slow. [0005] 2. Segment misalignment and its unevenness [0006] In the mining method tunnel, after the segment is completely separated from the shie...

Claims

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Application Information

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IPC IPC(8): E21D20/02E21D11/00E21D9/08
Inventor 赵书银王志才孙国辉郭秀琴吴琼
Owner CHINA RAILWAY 16TH BUREAU GRP CO LTD
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