A tunnel excavation support structure and construction method

A technology for supporting structures and tunnels, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., and can solve problems such as difficult installation, inability to effectively control deformation, and poor adaptability of supporting structures

Active Publication Date: 2021-09-10
THE 5TH ENG OF CHINA RAILWAY 22TH BUREAU GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a tunnel excavation support structure and construction method, which solves the difficulties in installation, poor adaptability of the support structure and ineffectiveness in the prior art. The problem of controlling deformation

Method used

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  • A tunnel excavation support structure and construction method
  • A tunnel excavation support structure and construction method
  • A tunnel excavation support structure and construction method

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Embodiment Construction

[0034] The technical solutions in the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] like Figure 1-2 As shown, the embodiment of the present invention proposes a tunnel excavation support structure, including an outer layer support 400 and an inner layer support 500, the outer layer support 400 includes an outer layer bottom plate and an outer layer arch support, and the inner layer support 500 includes The inner bottom plate 92 and the inner arch support 91;

[0036] like figure 1 , image 3 , the outer bottom plate includes a first bottom plate 10, a second bottom plate 20 and a third bottom plate 30. The bottom of the first bottom plate 10 is provided with a first roller 104, the bottom of the second bottom plate 20 is provided with a second roller 204, and the bottom of the third bottom plate 30 is provided with There is a third scroll wheel 304 .

[0037] like image 3 , the two ends of the sec...

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Abstract

The invention provides an excavation support structure and a construction method of a tunnel. The excavation support structure of a tunnel includes an outer layer support and an inner layer support, and the outer layer support includes an adjustable outer layer bottom plate and an adjustable The adjusted outer layer arch support, the inner layer support includes the inner layer bottom plate and the inner layer arch support, and a sandwich space is formed between the outer layer support and the inner layer support; a construction method is also provided, which includes: installing For the outer floor, install the outer arch support to form a temporary concrete support layer, install the inner support to form a permanent concrete reinforcement layer, etc. The invention is relatively simple to install, is conducive to the rapid development of engineering construction, has strong adaptability, has economic advantages, and can better control the problem of deformation of the supporting structure.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel excavation support structure and a construction method. Background technique [0002] For large-section tunnels with good geological conditions, the method of full-scale excavation is generally adopted. For large-section tunnels with poor geological conditions, the step method or partial excavation method is often adopted, and supporting structures are required during the excavation process. , to prevent the collapse and deformation of the tunnel wall, and to control the adverse effects of the deformation of the supporting structure on the existing ground buildings. However, some existing support structures are generally difficult to install, the support structure is not adaptable, and the deformation cannot be effectively controlled. SUMMARY OF THE INVENTION [0003] Aiming at the deficiencies in the prior art, the present invention provides a tunnel exca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/102
Inventor 苏昌辉刘飞王英森张凡杜斌黄明琦徐步云龙蛟戚小磊熊永川曹镇范胡建金
Owner THE 5TH ENG OF CHINA RAILWAY 22TH BUREAU GROUP
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