A treatment method for collapse of tunnel excavation working face by using pipe-through composite arch frame

A technology of tunnel excavation and processing method, which is applied in the direction of tunnel, tunnel lining, earthwork drilling and mining, etc. It can solve the problems of high cost, long period, high risk, etc., and achieve the effect of less preparation work, simple production and reduced process

Active Publication Date: 2018-08-10
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method of using a pipe-through composite arch to deal with problems such as many procedures, high cost, too long period, and excessive risks in the existing construction equipment and construction methods for dealing with tunnel excavation face collapse. Collapse Method of Tunnel Excavation Working Face

Method used

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  • A treatment method for collapse of tunnel excavation working face by using pipe-through composite arch frame
  • A treatment method for collapse of tunnel excavation working face by using pipe-through composite arch frame
  • A treatment method for collapse of tunnel excavation working face by using pipe-through composite arch frame

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Embodiment 1

[0054] The method for treating the collapse of the tunnel excavation working face by using the combined pipe-through arch frame of the present invention includes the following steps.

[0055] Step 1: Set up collared arches 2 to eighth with collars 3 in the safe area 1, and adjacent collared arches 2 are connected by tie rods 8; steel pipes 4 penetrate the collars on the collared arches 2 3, and beyond the collar arch 2 closest to the working face.

[0056] Step 2: At the collapse area 6 about 200mm~500mm away from the ring arch 2, lift the vault section 7-a of the segmented support arch 7 to 150~200mm higher than the grid arch 13, and then Push the steel pipe 4 at the top of the upper arch section 2-a of the collar arch 2 to the landslide area 6 by more than 1000 mm, so that the advanced steel pipe 4 supports the vault section 7-a. Push other steel pipes 4 on the upper arch section 2-a of the collar arch 2 to the landslide area 6 for more than 1000mm, and the vault section 7-...

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Abstract

The invention discloses a method for treating the collapse of a tunnel excavation working face by using a pipe-through composite arch frame, which includes installing ring arch frames (2) one by one in the tunnel safety zone (1), and welding the outer sides of the ring arch frames (2) A certain number of collars (3); steel pipes (4) sequentially pass through the collars (3) of the collar arch (2) and finally extend to the working face (5); Set up segmental support arches (7); adjacent arches are connected by tie rods (8); metal mesh (9) is laid on the segmental support arches (7); at the same time, reserve Concrete pumping pipe (10) and exhaust pipe (11). The invention discloses a specific combination method and application method of a pipe-through composite arch frame in the process of dealing with the collapse of a tunnel excavation working face. The invention effectively solves the problems of too long period, many procedures, high cost, excessive risk and the like existing in the construction method for dealing with tunnel collapse.

Description

technical field [0001] The invention belongs to the field of tunnel engineering construction, and relates to a method for treating tunnel collapse by using a pipe-through composite arch, in particular to a method for treating tunnel excavation face collapse by using a pipe-through composite arch. Background technique [0002] In recent years, in terms of tunnel construction, landslide accidents have occurred from time to time. At present, although there are many ways to deal with landslide accidents, there is still a lack of safe and effective treatment methods. The technologies currently used in the field of tunnel landslide rescue and disaster relief are: adopting temporary arches for the initial support of the adjacent landslide area; Working platform, sand bags are stacked on the platform to form an arc-shaped solid membrane; the concrete consolidation ring is reserved, and then sand and fly ash mixture is poured on the concrete consolidation ring to form a buffer layer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/18E21D11/15E21D11/10
Inventor 王海亮何闯韦守朋
Owner SHANDONG UNIV OF SCI & TECH
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