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Shield tunnel horizontal deviation correcting method

A shield tunnel, horizontal technology, applied in tunnels, tunnel linings, tracks, etc., can solve the problems of shortened service life, excessive actual axis offset, endangering train safety, etc., to increase lateral resistance and improve lateral deformation. ability, accurate deviation correction effect

Pending Publication Date: 2020-09-11
中铁四院集团工程建设有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a horizontal deviation correction method for a shield tunnel to solve the technical problem in the prior art that the actual axis offset of the shield tunnel is too large, which shortens its service life and endangers the safety of the train

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  • Shield tunnel horizontal deviation correcting method
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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the description of the present invention, relative orientation or positional relationship is based on figure 2 The orientation or positional relationship shown, where "top" and "bottom" refer to figure 2 top-bottom direction. It should be understood that these orientation terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as an important aspect of the present invention. limits.

[0027] refer to figure 1 , the embodiment of the present application provides a horizontal correction method for a shield tunnel, wherein the shield tunnel 10 includes a shield segment 11, a ballast bed 12 a...

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Abstract

The invention provides a shield tunnel horizontal deviation correcting method. A shield tunnel comprises a shield segment, a track bed arranged in the shield segment and a track laid on the track bed.The horizontal deviation correcting method comprises the following steps that the axis deflection direction and offset of the shield segment are detected; the initial position of each ring of shieldsegment needing to be subjected to deviation correcting is determined; at least one row of stress release holes are formed in a stratum on the side opposite to the axis deflection direction; multiplerows of jet grouting piles are constructed on one side of the axis deflection direction; and during jet grouting pile construction, the displacement of each ring of shield segment in the horizontal direction and the geometric size of the track are monitored, and accordingly the geometric size of the track is controlled within the preset range in the jet grouting pile construction process. The horizontal deviation correcting method is constructed on the ground surface and is simple and easy to conduct, usage of the shield tunnel is not influenced during construction, and accurate deviation correcting on the tunnel can be achieved.

Description

technical field [0001] The invention relates to the technical field of shield tunnel disease treatment, in particular to a horizontal deflection correction method for shield tunnels. Background technique [0002] During the construction and operation phases of shield tunnels, there will be deviations between the actual axis and the design axis due to various reasons. [0003] In the construction stage, the reasons for the excessive actual axis offset include: the installation slope of the starting bracket of the shield machine is not ideal, causing the actual axis offset of the shield machine to be in a bad state at the start; When excavating in a uniform ground, the surrounding resistance is inconsistent, and the thrust of the propulsion jack is a passive response. When the resistance increases, the thrust increases, but with a certain hysteresis, which makes the propulsion speed of each jack different, which will inevitably lead to certain changes in the propulsion directi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/093E21D9/00E21D11/08E02D5/46E01B2/00G01B11/00G01B11/03G01C15/00
CPCE01B2/00E02D5/46E21D9/003E21D9/0607E21D11/08E21D9/093G01B11/002G01B11/03G01C15/00
Inventor 陈占葛寨辉孟长江陈侃陈仕奇房军李应平仲光伟赵世煜李仕波高松松
Owner 中铁四院集团工程建设有限责任公司
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