Shield tunnel segment orientation method

A shield tunnel segment and segment technology, which is used in tunnels, tunnel lining, earthwork drilling, etc., can solve problems such as the influence of stratum and segment structure, segment fragmentation, shield and segment jamming, etc.

Active Publication Date: 2021-04-13
NO 4 ENG CO LTD OF CHINA RAILWAY NO 9 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The segment twists and squeezes the stratum outward, causing complex effects on the stratum and the segme

Method used

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  • Shield tunnel segment orientation method
  • Shield tunnel segment orientation method
  • Shield tunnel segment orientation method

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0029] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, so they cannot be understood as Limitations on the Inven...

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Abstract

The invention belongs to the technical field of shield tunnel supporting, and particularly relates to a shield tunnel segment orientation method. The method includes the steps that a grouting bag penetrates through any one or more grouting holes of a segment through a grouting pipe and extends into a gap between the inner wall of a tunnel and the segment, and double-liquid slurry is injected into the grouting bag through the grouting pipe to enable the grouting bag to be expanded, so that positioning and supporting are conducted on the segment; meanwhile, cement slurry is injected through any one or more grouting holes of the remaining grouting holes in the segment so as to fill the gap between the segment and the tunnel, and the segment is fixed; and the double-liquid slurry is injected between the segment and the inner wall of the tunnel through the grouting pipe and the grouting bag, the double-liquid slurry is rapidly solidified and supported in the grouting bag, and the slurry is directionally solidified through the grouting bag, so that the segment and the inner wall of the tunnel can have high stability, and the segment is effectively prevented from floating upwards, sinking and swinging leftwards and rightwards.

Description

technical field [0001] The invention belongs to the technical field of shield tunnel support, and in particular relates to a shield tunnel segment orientation method. Background technique [0002] The traditional solutions to the segment orientation process include the push of the shield to push down the attitude, the hoop of the segment with double-slurry injection, and the double-slurry grouting with multiple supplements. The accumulative data of the segment floating in the lower attitude of the shield has not changed fundamentally, and segment misalignment and damage are unavoidable. And the shield tail brush, generally can be injected after the shield tail protrudes from the fifth ring of the segment, and the effect is not obvious. [0003] During the construction of small-radius curved shield, the tunnel may be displaced to the outside of the curve after the segment exits the shield tail, so the axis control is more difficult. The segment twists and squeezes the strat...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/10E21D9/06
CPCE21D11/08E21D11/105E21D11/107E21D11/10E21D9/0607
Inventor 佟方硕王怀东杨柳枝刘晓迪王洋崔广宇肖羽曼温双丽
Owner NO 4 ENG CO LTD OF CHINA RAILWAY NO 9 GRP
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