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Tunnel base and method for constructing same

A technology for tunnels and foundations, applied in tunnels, tunnel linings, shaft linings, etc., can solve problems such as poor construction safety, low construction efficiency, and long construction period

Pending Publication Date: 2019-01-22
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of tunnel disease control, the existing tunnel foundation replacement and invert replacement have a long construction period and low construction efficiency
In addition, the interference to the surrounding rock of the tunnel is serious, which not only seriously affects the bearing capacity of the treated tunnel base, but also has poor construction safety, and the construction and maintenance costs of the tunnel base are high

Method used

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  • Tunnel base and method for constructing same
  • Tunnel base and method for constructing same
  • Tunnel base and method for constructing same

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] It should be noted that in this application, the direction of the horizontal line in the cross section of the tunnel base is defined as "transverse", the direction of tunnel extension is defined as "longitudinal", and the direction perpendicular to the horizontal plane is defined as "vertical". . And the directional terms or qualifiers "upper end", "lower end" and other similar terms used in this application are all for the referenced drawings, they are not used to limit the absolute position of the parts involved, but can be Varies on a case-by-case basis.

[0032] figure 1 A schematic diagram of a transverse section of a tunnel substrate 100 according to the invention is shown. like figure 1 As shown, the tunnel base 100 is installed at the bottom of the tunnel 200 . According to the invention, the tunnel base 100 is a prefabricat...

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Abstract

The invention provides a tunnel base which comprises inverted arch prefabricated blocks and prefabricated filled layers. The inverted arch prefabricated blocks are arranged at the bottom of a tunnel;the prefabricated filled layers are mounted on the upper portions of the inverted arch prefabricated blocks, each prefabricated filled layer comprises two F-shaped prefabricated blocks and an n-shapedprefabricated block, the F-shaped prefabricated blocks of each prefabricated filled layer are connected with the bottoms of arch walls on two sides of the tunnel and are in mirror image arrangement,and each n-shaped prefabricated block is arranged between the two corresponding F-shaped prefabricated blocks in a fixedly connected manner; the prefabricated filled layers are mounted with the inverted arch prefabricated blocks in a matched manner, and the inverted arch prefabricated blocks and the prefabricated filled layers are longitudinally continuously arranged along the bottom of the tunnelto form the tunnel base.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction, in particular to a tunnel base. The invention also relates to a construction method of the tunnel base. Background technique [0002] In recent years, with the development of my country's railway transportation, railway tunnel construction projects have become more and more important, and more and more tunnel projects have been put into operation. [0003] Currently, railway tunnel bases are usually cast in concrete. During the operation period, the common diseases of the tunnel base include delamination, cracking, floor heaving, subsidence, mud turning, lining cracking and other diseases. These have seriously affected the safety and normal operation of the tunnel, and reduced the bearing capacity of the lining structure to the surrounding rock. At the same time, the pavement and inverted arches were damaged, resulting in deformation of the road surface, which seriously...

Claims

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Application Information

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IPC IPC(8): E21D9/14E21D11/08
CPCE21D9/14E21D11/08
Inventor 王志伟马伟斌杜晓燕张斌王子洪余东洋付兵先马超锋邹文浩李尧安哲立郭小雄赵鹏常凯
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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