Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine

A communication channel and construction method technology, applied in tunnels, earthwork drilling, safety devices, etc., can solve problems such as soil collapse, inability to effectively control the stability of the excavation surface, and water gushing

Active Publication Date: 2012-08-22
SHANGHAI TUNNEL ENG CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The "pipe jacking machine" used in this process is a simple on-site equipment that cannot effectively control the stability of the excavation surface and control the advancing axis
In addition, the outside of the original tunnel steel sheet where the passage is located needs to be reliably reinforced with soil. After the steel sheet i

Method used

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  • Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine
  • Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine
  • Tunnel connecting passage construction method for directly cutting segment rings through pipe jacking machine

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with specific examples.

[0040] see figure 1 , a kind of pipe jacking direct cutting segment tunnel connection channel construction method of the present invention, comprises the following steps:

[0041] Firstly, a plurality of special segment rings 4 are assembled in preset positions of a first tunnel 1 and a second tunnel 2 respectively, and the special segment rings 4 include a cuttable portion 42;

[0042] Then, install a pipe jacking machine starting platform 12 and a jacking system 11 in the first tunnel 1, the jacking system 11 includes a jacking backrest 111, a jacking jack 112 and a pad 113; and Locate the position of an exit opening 14 on the special segment ring 4 of the first tunnel 1, locate the position of an entrance opening 23 on the special segment ring 4 of the second tunnel 2; and prepare for the construction of the communication channel 5;

[0043] Put a pipe jacking machine 3 i...

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Abstract

The invention discloses a tunnel connecting passage construction method for directly cutting segment rings through a pipe jacking machine. The method comprises the following steps: respectively assembling a plurality of special segment rings in preinstallation positions of a first tunnel and a second tunnel, performing tunnel exit preparation for the pipe jacking machine, cutting the special segment rings for tunnel exit through the pipe jacking machine, propelling the pipe jacking machine, performing tunnel entrance preparation for the pipe jacking machine before the pipe jacking machine reaches the second tunnel, cutting the segment rings for tunnel entrance through the pipe jacking machine to form a connecting passage, plugging a tunnel opening, and ensuring that the connecting passage is respectively connected with the first tunnel and the second tunnel. As the method is adopted, the tunnel connecting passage construction risk can be effectively reduced, the tunnel connecting passage construction safety is guaranteed, and simultaneously, the tunnel connecting passage construction speed is increased, and the method has the characteristics of safety, reliability, convenience, high efficiency, long construction distance and high applicability.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method for directly cutting a segment tunnel for jacking pipes. Background technique [0002] The communication channel is a humanized design for the rapid and safe evacuation of personnel to another tunnel through the established connecting channel in case of abnormal conditions such as fire in one tunnel during normal operation of the tunnel. Generally, when the length of the tunnel in the two-line subway section is greater than 1km, it is necessary to set up a connecting channel. For longer river bottom tunnels, there are generally multiple communication channels. The construction methods of communication passages mainly include: open cut method, pipe shed method, soil reinforcement and underground excavation method, pipe jacking method, small shield method, etc. In the Shanghai area, the underground excavation method for soil reinforcement and the pipe jacking method ...

Claims

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Application Information

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IPC IPC(8): E21D9/10E21F11/00
CPCE21D9/008
Inventor 段创峰魏林春侯永茂顾沉颖张露根邱裕华赵艳鹏
Owner SHANGHAI TUNNEL ENG CO LTD
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