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Construction method in which large-diameter shield advances across air shaft in long distance

A construction method and long-distance technology, applied in the direction of earth cube drilling, mining equipment, tunnels, etc., can solve problems such as segment deformation, and achieve the effects of solving deformation, saving maintenance time, saving construction period and materials

Inactive Publication Date: 2013-06-19
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to provide a large-diameter shield long-distance propulsion construction method through the air shaft, which is used to solve the deformation problem caused by advancing the segments in the air shaft

Method used

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  • Construction method in which large-diameter shield advances across air shaft in long distance
  • Construction method in which large-diameter shield advances across air shaft in long distance

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Embodiment Construction

[0019] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0020] The present invention is a construction technology for long-distance traversal of shield tunneling in the 5th bid project of Shanghai Rail Transit Line 16, and the tunnel to be constructed ( figure 1 , shown in 2), the specific implementation steps are:

[0021] 1) Determine the shield axis when passing through the wind shaft

[0022] When the shield tunnel passes through the wind shaft, the design plane axis of the e...

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Abstract

The invention relates to a construction method in which a large-diameter shield advances across an air shaft in long distance. The pushing forward construction method of the large-diameter shield across the air shaft in a long distance comprises the following steps of determining the axis of the shield across the air shaft, determining the base form of precast concrete beams and steel box beams when a shield tunneling machine penetrates through the air shaft, and determining the piecing form and the supporting mode of air shaft negative ring pipe pieces. With the pushing forward construction method, maintenance time can be saved, the shield can be reused, construction period is greatly shortened, and materials are greatly saved. When the large-diameter shield penetrates through the air shaft in a long distance, side pressure on the shield does not exist, and piecing of the negative ring pipe pieces is extremely prone to deforming transversely. Meanwhile, when the shield is pushed forward in the air shaft, front pressure on the shield does not exist, and the negative ring pipe pieces are prone to tightening longitudinally (namely among rings). According to the construction method in which the large-diameter shield advances across the air shaft in long distance, the deformation problem of pipe pieces is well solved.

Description

technical field [0001] The invention relates to a construction method for long-distance propulsion of shield tunneling, in particular to a construction method for long-distance crossing of wind shafts by large-diameter shield tunneling. Background technique [0002] At present, with the further development of urban underground space, the running speed of urban rail transit trains continues to increase, and the requirements for tunnel boundaries have also increased. Large-diameter shield tunnels will be more and more used in rail transit. The construction of wind shafts is inevitable, and how to safely pass through the long-distance wind shaft construction technology with large shields is a problem that needs to be solved urgently. [0003] At present, there is a common phenomenon of tight construction schedules in municipal projects. The use of precast concrete + steel box girder base can not only solve the maintenance time, but also can be reused, which greatly saves constr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
Inventor 杨成龙龚金弟顾振伟
Owner SHANGHAI FOUND ENG GRP
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