An emergency treatment method for tunnel face collapse

An emergency treatment and working face technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of section support that cannot collapse, long period, cumbersome construction procedures, etc., to ensure operational safety, simple processing, and reduce Dangerous effects of secondary landslides

Active Publication Date: 2018-07-24
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

The construction process of this patent is cumbersome and the cycle is long, and it cannot support the collapsed section in a timely and effective manner.

Method used

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  • An emergency treatment method for tunnel face collapse
  • An emergency treatment method for tunnel face collapse
  • An emergency treatment method for tunnel face collapse

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Embodiment Construction

[0043] The present invention provides an emergency treatment method for tunnel working face collapse. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] The invention provides an emergency treatment method for tunnel face collapse, such as figure 1 and figure 2 As shown, it includes the following steps:

[0045] A. Use a single hydraulic prop 3 to continuously support two arch beams 4 in the safety section 1;

[0046] B. Place an I-steel wedge beam 9 on the arch beam 4, and push it into the working face 10 of the landslide area;

[0047] C. Place the carrier 13 on the top of the I-steel wedge beam 9 in the collapse section 11, so that the height of the carrier 13 is slightly higher than the grid ...

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Abstract

The invention discloses an emergency treatment method for landslides in tunnel working faces. Two arch beams are continuously supported by single hydraulic props in the safety section, and I-steel wedge beams are placed on the arch beams to push into the working face of the collapse area; Place the bearing body on the upper part of the I-steel wedge beam in the collapse section, so that the height of the bearing body is slightly higher than the grid steel frame of the initial support; place a waterproof metal grid bearing body horizontally above the bearing body, and pump the pipe pump through the concrete pump Concrete delivery; remove the concrete pumping pipe, concrete height detection pipe, and exhaust pipe; after the concrete is consolidated, remove and cut the bearing body close to the safety section, and quickly carry out initial support for the collapse section; quickly and effectively support the collapse section , to make up for the defects of commonly used tunnel collapse emergency treatment equipment, better meet the emergency treatment requirements of tunnel collapse, and provide construction conditions for subsequent tunnel collapse treatment.

Description

technical field [0001] The invention relates to the field of tunnel engineering construction, in particular to an emergency treatment method for collapse of working faces of shallow-buried tunnels constructed by step method. Background technique [0002] At present, in domestic tunnel engineering, when dealing with tunnel collapse accidents, the commonly used methods include the pipe shed method, the small pipe grouting method, and the secondary lining reinforcement method. In landslide accident handling, the application of these methods has been relatively mature. However, there are certain limitations. For example, the use of grouting reinforcement makes the treatment period long, the mechanical construction is complicated, and the operating environment requires high requirements, which cannot provide timely and effective support for the collapsed section. In addition, the rock mass around the collapse is broken and seriously unstable. If the support cannot be supported i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D19/00E21D11/10
CPCE21D11/105E21D19/00
Inventor 王海亮陈吉辉
Owner SHANDONG UNIV OF SCI & TECH
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