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Excavation method for safe construction of tunnel engineering

A technology for tunnel engineering and safety, which is applied to tunnels, earthwork drilling, mining equipment, etc., and can solve problems such as the inability to determine the direction of construction and excavation, and the length of the crossing area.

Active Publication Date: 2021-01-05
中建铁投轨道交通建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for deep-buried long tunnels, the crossing area is relatively long, and there may be multiple faults. If the tunnel faces on both sides of the excavation direction are located in the footwall of the fault, the direction of construction excavation cannot be determined by the existing technology.

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  • Excavation method for safe construction of tunnel engineering

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[0017] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0018] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0019] The excavation method for safe construction of tunnel engineering in the embodiment of the present invent...

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Abstract

The invention discloses a tunnel engineering safety construction excavation method. An excavation process of two opposite tunneling tunnel faces of a deeply-buried tunnel is continuously monitored through a micro-seismic sensor; the fault conditions in front of the tunnel faces are detected in real time; when a plurality of faults exist in front of the tunnel faces on the two sides, the excavationsequence of the tunnel faces on the two sides of the tunnel is determined according to the rock mass properties between the faults and the tunnel faces; rock burst disasters caused when the tunnel faces penetrate through the faults can be effectively reduced, and tunnel construction safety is guaranteed.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a safe tunnel construction and excavation method for reducing the risk of rockburst during tunnel construction. Background technique [0002] In tunnels and underground engineering, the surrounding rock composed of hard and brittle rock mass accumulates high elastic strain energy under high ground stress conditions. During the excavation process, due to the excavation surface, the radial stress decreases and the tangential stress increases due to the stress differentiation effect. When the concentrated stress exceeds the failure strength of the rock mass, the stored in the rock mass The sudden release of elastic strain energy, accompanied by bursting, peeling, ejection or even throwing, is called rockburst. [0003] Different from the plastic failure of large deformation of surrounding rock, rockburst is a nonlinear dynamic phenomenon accompanied by violent release of energy. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00
Inventor 韩少鹏
Owner 中建铁投轨道交通建设有限公司