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Emergency processing method for tunnel working face collapse

A technology for emergency treatment and working face, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of long cycle, cumbersome construction procedures, and the support of sections that cannot collapse, achieve simple processing, ensure operation safety, reduce The dangerous effect of secondary collapse

Active Publication Date: 2017-03-29
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Emergency processing method for tunnel working face collapse
  • Emergency processing method for tunnel working face collapse
  • Emergency processing method for tunnel working face collapse

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Embodiment Construction

[0043] The present invention provides an emergency treatment method for tunnel 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 steel fr...

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Abstract

The invention discloses an emergency processing method for tunnel working face collapse. Two arched beams are continuously supported by single-body hydraulic supporting columns on the safe section, and I-steel tapered beams are placed on the arched beams and are ejected in the working surface of the collapse area; carriers are placed on the upper portions of the I-steel tapered beams of the collapse section, and the height is of the carriers is made to be slightly larger than that of a grating steel frame for preliminary support; a waterproof metal grating carrier is horizontally placed above the carriers, and concrete is pumped through a concrete pumping pipe; the concrete pumping pipe, a concrete height detection pipe and an exhaust pipe are detached ;the carriers close to the safe section are detached and cut after concrete solidification is completed, and preliminary support is rapidly conducted on the collapse section; and therefore the collapse section is rapidly and effectively supported, the defects of tunnel collapse emergency processing apparatuses frequently used at present are overcome, the emergency processing requirements of tunnel collapse are better met, and construction conditions are provided for subsequent tunnel collapse processing.

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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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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