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Construction method of super-large-section deep tunnel and accessory structure thereof

A technology of extra-large section and ancillary structures, applied in tunnels, tunnel linings, earth-moving drilling and mining, etc., can solve the problems of slow excavation and large vibration of extra-large-section tunnels and their ancillary structures, and achieve the advantages of small vibration, reduced vibration, and accelerated fixing speed. Effect

Active Publication Date: 2017-09-05
CHONGQING VOCATIONAL INST OF ENG
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Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for super-large-section deep-buried tunnels and auxiliary structures, so as to solve the problems of slow excavation and large vibration of super-large-section tunnels and auxiliary structures

Method used

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  • Construction method of super-large-section deep tunnel and accessory structure thereof
  • Construction method of super-large-section deep tunnel and accessory structure thereof

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Embodiment Construction

[0023] The present invention will be described in further detail below by means of specific embodiments:

[0024] The reference signs in the drawings of the description include: left area 11, main area 12, right area 13, left partition layer 21, right partition layer 22, anchor rod 31, steel mesh 32, steel frame 33, concrete 34, reinforcement bar 35 , rock formation 40 , tunnel 50 .

[0025] like figure 1 , figure 2 As shown, a construction method for an extra-large cross-section deep-buried tunnel and ancillary structures includes the following steps:

[0026] (1) Divide the section of the tunnel 50 from the left side into the left area 11, the main area 12 and the right area 13, such as figure 1 As shown, a left partition layer 21 is provided between the left region 11 and the main region 12, and a right partition layer 22 is provided between the main region 12 and the right region 13; the upper end of the left partition layer 21 and the upper end of the right partition ...

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Abstract

The invention belongs to the technical field of tunnel construction, and in particular discloses a construction method of a super-large-section deep tunnel and an accessory structure thereof. The method comprises the following steps: (1) sequentially dividing the cross section of a tunnel into a left area, a main area and a right area along the transverse direction; (2) digging a left hole and a right hole from the left area and the right area; (3) digging a main hole from the main area; (4) dismantling all temporary supports; (5) repeating the step (2), the step (3) and the step (4); (6) digging an air duct. Compared with the prior art, the construction method can be used for rapidly digging the super-large-section deep tunnel with small vibration.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and specifically discloses a construction method for a super-large cross-section deep-buried tunnel and an auxiliary structure. Background technique [0002] The rapid development of modern cities has led to more and more urban traffic congestion, so now big cities are vigorously developing public transportation, especially rail transit, which has become an inevitable demand for big cities. Restricted by terrain features and terrain required by rail transit, more tunnels are designed in the design of rail transit; however, rail transit projects are characterized by short construction periods, high quality standards, and great impact on municipal facilities and residents' lives. That is, in the process of tunnel construction, not only the vibration generated during excavation must be small, but also the excavation speed must be fast. [0003] At present, tunnel excavation methods incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/10
CPCE21D9/00E21D11/10
Inventor 王贵珍李红立彭军
Owner CHONGQING VOCATIONAL INST OF ENG
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