Method and structure for treating tunnel collapse

Abstract

The invention discloses a method and structure for treating tunnel collapse. The method comprises a sub-method I for treating a collapse section (4) of a main cave (1) of a tunnel and a sub-method II for excavating the main cave (1) from the back of the collapse section (4) in a reverse direction to treat the collapse section (4), wherein the sub-method I is characterized by excavating one or more by-pass caves (2) which skirt the collapse section (4) and lead to the main cave (1). According to the method and structure, collapse in the tunnel can be treated safely, conveniently and fast, so as to reduce the impact of collapse treatment on construction period to the utmost extent. Compared with the method of front collapse section treatment, which causes repeated collapse and repeated treatment, the method and structure have the advantage that risk and investment of collapse treatment are greatly reduced, thereby having remarkable economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction in water conservancy, hydropower, transportation and other industries, in particular to a method and structure for treating tunnel collapse. Background technique [0002] At present, my country is vigorously developing the construction of basic industries such as water conservancy, energy, and transportation. Water conservancy and hydropower, railways, urban underground transportation and other projects include a large number of tunnel constructions. Affected by subjective and objective factors, tunnel collapses sometimes occur. In the lighter case, it will cause unnecessary waste of a large amount of materials, and the personnel will not work, and in the serious case, it will delay the construction period and even endanger the life safety of the operators. Especially during the construction of long tunnels, the problem of landslides is more prominent. When affected by fault...

AI Technical Summary

Problems solved by technology

[0002] At present, my country is vigorously developing the construction of basic industries such as water conservancy, energy, and transportation. Water conservancy and hydropower, railways, urban underground transportation and other projects include a large number of tunnel constructions. Affected by subjective and objective factors, tunnel collapses sometimes occur. In the light case, it will cause unnecessary waste of a large amount of materials, and the personnel will not work, and in the serious case, it will delay the construction period and even endanger the life safety of the operators

Especially during the construction of long tunnels, the problem of landslides is more prominent. When affected by fault fracture zones, weak surrounding rocks, abundant groundwater or other unfavorable factors, it is very difficult to deal with landslides, and repeated landslides often occur. In this case, it often consumes a lot of manpower, material resources and time, which not only increases the project investment but also delays the project period.

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