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Construction method of single shield TBM (tunnel boring machine) in urban subway tunnel

An interval tunnel, single shield technology, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of imperfect technology, difficult long-distance stepping, long starting time, etc., to shorten the starting time, The construction is fast and the effect of improving the stepping speed

Inactive Publication Date: 2018-08-10
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is rare to use the single-shield TBM construction method in urban rail transit projects with complex environments.
The existing single-shield TBM construction still has problems such as long starting time and difficulty in long-distance stepping, and the process is not perfect

Method used

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  • Construction method of single shield TBM (tunnel boring machine) in urban subway tunnel
  • Construction method of single shield TBM (tunnel boring machine) in urban subway tunnel
  • Construction method of single shield TBM (tunnel boring machine) in urban subway tunnel

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] 1.1 Construction process

[0035] After the single-shield TBM equipment has been assembled and debugged on the site outside the tunnel, the step-by-step construction will start. After stepping into the face of the underground excavation tunnel, the reaction ring construction will be carried out, and then the construction of departure, excavation, arrival, and station passing will be carried out. . For the construction process and process flow of single-shield TBM, see figure 1 , figure 2 .

[0036] 1.2 Operation points

[0037] 1.2.1 Single-shield TBM stepping (passing)

[0038] The stepping trolley is used for stepping (the width of the trolley is 3322mm, and the length is 10600mm). The structure is composed of two parts: the arc-shaped stepping frame 1 and the lifting frame 2. The friction force between frame 1 and the groun...

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Abstract

The invention relates to a construction method of a single shield TBM in an urban subway tunnel. The construction method of the single shield TMB in the urban subway tunnel includes the steps of starting stepping construction with a stepper car after the single shield TBM is assembled and debugged on a site outside a tunnel, performing reaction-force ring construction after stepping into a tunnelface of a bored tunnel, and then conducting starting, tunneling, arriving and station-crossing construction. The stepper car comprises a curved stepping frame, a propulsion cylinder arranged on the curved stepping frame, a lifting frame and a lifting cylinder, wherein the curved stepping frame is disposed under a main machine, and the lifting frame is provided with the lifting cylinder used for lifting the main machine and is disposed on both sides of the main machine. The construction method of the single shield TBM in the urban subway tunnel has the advantages of greatly improving stepping speed and effectively solving the problem of long distance stepping.

Description

technical field [0001] The invention belongs to the field of tunnel construction and relates to a single-shield TBM construction method for urban subway interval tunnels. Background technique [0002] With the rapid development of tunnel projects such as railways, hydropower, transportation, mining, and municipal engineering, more and more tunnel boring equipment is used in the excavation construction of long tunnels. Forming and construction are safe, environmentally friendly, reliable and efficient, and are widely used in railway and water conservancy tunnel projects. However, it is rare to use the single-shield TBM construction method in urban rail transit projects with complex environments. The existing single-shield TBM construction still has problems such as long starting time and difficulty in long-distance stepping, and the process is not perfect. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a single-shiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/05E21D11/10
CPCE21D9/06E21D11/05E21D11/105
Inventor 刘新荣刘东双孟庆军钟祖良彭冠峰熊飞
Owner CHONGQING UNIV