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A deflection correction and reinforcement method for shield tunneling

A technology for shield tunneling and tunneling, which is applied to tunnels, tunnel linings, and earth-moving drilling and mining, etc., can solve the problems of difficulty, lack of formation, and increase in shield tunneling, so as to achieve less ground space occupation, controllable degree of deviation correction, and economical savings. The effect of engineering investment

Active Publication Date: 2018-03-13
CHINA RAILWAY ENG CONSULTING GRP CO LTD +1
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Problems solved by technology

[0002] With the expansion of the city, the excavation of deep foundation pits of buildings around the reclamation area of ​​coastal cities and the existing subway tunnels is gradually increasing. Due to the particularity of the stratum and development and construction of the reclamation area, the excavation of the foundation pits of the surrounding buildings causes less rigidity Accidents of large-scale settlement and deflection of shield tunnels are also gradually increasing. For subway tunnels that have been in operation, it is extremely difficult to rectify and reinforce them on a large scale. The current prior art has not yet formed a systematic and effective solution. method

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  • A deflection correction and reinforcement method for shield tunneling
  • A deflection correction and reinforcement method for shield tunneling
  • A deflection correction and reinforcement method for shield tunneling

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Embodiment Construction

[0045] 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 with reference to the accompanying drawings and examples.

[0046] This embodiment provides a deflection correction and reinforcement method for a shield tunnel.

[0047] figure 1 It is a schematic flow chart of the deflection correction and reinforcement method for the shield tunnel in the embodiment of the present invention. Such as figure 1 As shown, the deflection correction and strengthening method of the shield tunnel in the embodiment of the present invention mainly includes the following steps:

[0048] In step 101, a safety assessment is performed on the shield tunnel to be corrected and strengthened, and the current stress state of the segment is acquired.

[0049] In the technical scheme of the present invention, the shield tunnel (for example, figure 2 The shield tunnel shown in 10) is subjected...

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Abstract

The invention discloses a rectifying and reinforcing method of shield tunnels. The method comprises the following steps: A, evaluating safety of the shield tunnels to be rectified and reinforced to obtain current pipe segment stress state; B, executing the step C when the current pipe segment stress state meets the requirements of specification and structural calculation; executing the step C after the stress of the shield tunnels to be rectified and reinforced is released when the current pipe segment state has been in the critical state or has been out of the limit; C, determining main deforming and readjusting directions and secondary deforming and readjusting directions according to main deviation directions of the tunnels; and D, firstly grouting and rectifying the main deforming and readjusting directions, and then grouting and rectifying the secondary deforming and readjusting directions again. Through the adoption of the rectifying and reinforcing method of the shield tunnels, the operated metro shield tunnels with large-range settlement deviation in the reclamation areas can be effectively rectified and reinforced.

Description

technical field [0001] The invention relates to the technical field of underground engineering, in particular to a deflection correction and reinforcement method for a shield tunnel. Background technique [0002] With the expansion of the city, the excavation of deep foundation pits of buildings around the reclamation area of ​​coastal cities and the existing subway tunnels is gradually increasing. Due to the particularity of the stratum and development and construction of the reclamation area, the excavation of the foundation pits of the surrounding buildings causes less rigidity Accidents of large-scale settlement and deflection of shield tunnels are also gradually increasing. For subway tunnels that have been in operation, it is extremely difficult to rectify and reinforce them on a large scale. The current prior art has not yet formed a systematic and effective solution. method. Contents of the invention [0003] In view of this, the present invention provides a defle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/01E21D11/10E21D9/00G06F17/50
CPCE21D9/001E21D9/002E21D11/10G06F30/23
Inventor 邬泽蔣小锐王德福石山陈学峰赵巧兰柏涵余涛于文涛刘建友吕刚陈五二王杨彭斌于鹤然
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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