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Multi-arch tunnel composite middle wall supporting structure and construction method thereof

A technology for multi-arch tunnels and support structures, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve construction difficulties and other problems, achieve the effects of improving thrust resistance, reducing material costs, and improving safety

Pending Publication Date: 2022-05-06
GUIZHOU TRANSPORTATION PLANNING SURVEY & DESIGN ACADEME
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the construction of multi-arch tunnels, there are also construction difficulties in the composite mid-wall structure multi-arch tunnels that designers prefer

Method used

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  • Multi-arch tunnel composite middle wall supporting structure and construction method thereof
  • Multi-arch tunnel composite middle wall supporting structure and construction method thereof
  • Multi-arch tunnel composite middle wall supporting structure and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Example 1. As figure 1 As shown, a composite middle wall support structure of a multi-arch tunnel is used to support the construction process of the multi-arch tunnel. The side wall arch 2 of the central pilot tunnel is arranged on the side, and the side wall arch 2 of the central pilot tunnel is movably connected with the horizontal arch 1; The end is connected with the main cave roof arch 4 supporting the top of the main cave, and the main cave side wall arch 5 is arranged on the side wall of the main cave, and the main cave is provided between the lower end of the main cave side wall arch 5 and the lower end of the initial support 3 of the middle partition wall. Invert 6.

[0032] The side wall arch 2 of the middle pilot tunnel and the transverse arch 1 are in a circular arc transition, the initial support 3 of the middle partition wall and the main cave roof arch 4 are on the same arc line; the main cave invert arch 6 and the main cave side wall arch 5 , The inver...

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Abstract

The invention discloses a multi-arch tunnel combined type middle wall supporting structure and a construction method thereof, the multi-arch tunnel combined type middle wall supporting structure is used for supporting in the multi-arch tunnel construction process, the structure comprises transverse arches evenly distributed and supported at the top of a middle pilot tunnel, middle pilot tunnel side wall arches are arranged on the left side and the right side of the middle pilot tunnel, and the middle pilot tunnel side wall arches are movably connected with the transverse arches; middle partition wall initial supports are arranged on the left side and the right side of the transverse arch, main hole top arches for supporting the top of the main hole are connected to the left end and the right end of the transverse arch, main hole side wall arches are arranged on the side walls of the main hole, and main hole inverted arches are arranged between the lower ends of the main hole side wall arches and the lower ends of the middle partition wall initial supports. According to the method, the thrust of the main hole arch ring acting on the middle wall during construction can be optimized, and the damage of unbalanced thrust to the middle wall is reduced.

Description

technical field [0001] The invention relates to a composite mid-wall support structure of a multi-arch tunnel and a construction method thereof, belonging to the field of tunnel engineering. Background technique [0002] The arch rings on both sides of the multi-arch tunnel share a partition wall, and the entire section is in the form of an "M". This structural feature determines the particularity and difficulty of the construction of the multi-arch tunnel. In the multi-arch tunnel, according to the different structural forms of the partition wall, it is divided into an integral middle wall and a composite middle wall. There are structural defects in the integral middle wall. The top of the middle wall and the vault of the middle pilot tunnel are usually not backfilled tightly, which cannot form effective support for the surrounding rock of the central pilot tunnel vault, and the primary support and secondary lining of the main tunnel The arch ring is supported on the top o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/36E21D11/18E21D11/28E21D11/10E21D9/00
CPCE21D11/36E21D11/18E21D11/28E21D11/10E21D11/107E21D9/00
Inventor 梁中勇杨胜波崔宇梁大贵
Owner GUIZHOU TRANSPORTATION PLANNING SURVEY & DESIGN ACADEME