Multi-arch tunnel construction method

A construction method and technology of multi-arch tunnels, which are applied in tunnels, tunnel linings, earthwork drilling and mining, etc., to achieve the effects of saving costs and man-hours, saving costs, and facilitating demolition

Active Publication Date: 2021-08-13
CHONGQING VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the object of the present invention is to provide a kind of multi-arch tunnel construction method, to solve the defect of partition wall construction in traditional multi-arch tunnel

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Embodiment Construction

[0037] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0038] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a multi-arch tunnel construction method, and belongs to the field of tunnel construction. A middle pilot tunnel and a middle partition wall of a multi-arch tunnel are both in a straight wall type, the middle partition wall is arranged on the side, close to the middle pilot tunnel, in the middle pilot tunnel, and after construction of the middle partition wall is completed, one side of the middle partition wall is tightly attached to the inner wall of the middle pilot tunnel. Due to the fact that one side of the middle partition wall is tightly attached to the inner wall of the middle pilot tunnel, when concrete pouring is conducted on the middle partition wall, concrete pouring can be conducted only by providing a middle partition wall formwork sealing formwork on the other side, and the formwork erecting time and cost are saved. After construction of a section of the middle partition wall is completed, a large operation space still exists in the middle pilot tunnel, synchronous construction of other procedures is facilitated, and the construction efficiency can be improved. After construction of the middle partition wall is completed, earthwork backfilling or steel support installation is not needed, and the cost and the working time are saved. In the main tunnel excavation process, the middle partition wall provides counter force through the wall of the middle pilot tunnel, the method is more reliable, and the construction safety is improved. The multi-arch tunnel construction method has positive influences on the multi-arch tunnel construction safety, quality, progress and cost.

Description

technical field [0001] The invention belongs to the field of tunnel construction, and relates to a construction method for multi-arch tunnels. Background technique [0002] Multi-arch tunnels are one of the more common structural forms of tunnels. Due to the characteristics of multi-arch tunnels that are less restricted by terrain conditions, save land, have good structural integrity and low overall cost, tunnels with this structural form are currently gaining popularity in the field of tunnel engineering. a wide range of applications. [0003] Usually, the three-pilot method is adopted in the construction of multi-arch bridge tunnels. First, the pilot tunnel is constructed, and then the partition wall is constructed. [0004] The middle partition wall is located on the center line of the middle pilot tunnel, and occupies a large space in the middle pilot tunnel. When constructing the middle partition wall, it is time-consuming to bind the middle partition wall steel bars i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/10E21D11/38E21F17/103
CPCE21D9/00E21D11/10E21D11/38E21F17/103
Inventor 陈力华杨海清瞿万波杨航宋康磊梁华明
Owner CHONGQING VOCATIONAL INST OF ENG
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