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Construction method for super-large special-shaped section

Active Publication Date: 2021-05-25
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a construction method with a super-large special-shaped section, which can effectively solve the problems of small construction span, low construction efficiency and poor geological adaptability of existing construction methods

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  • Construction method for super-large special-shaped section
  • Construction method for super-large special-shaped section
  • Construction method for super-large special-shaped section

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Embodiment Construction

[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0042] A specific embodiment of the present invention provides a construction method for a super-large special-shaped section, mainly for non-blasting excavation construction of a non-standard circular or horseshoe-shaped section with an excavation span greater than 20 meters, in...

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Abstract

The invention discloses a construction method for a super-large special-shaped section, which can ensure the stability of a tunnel face and surrounding rock masses in the excavation process of a super-large cavern by pre-supporting and reinforcing the tunnel face in advance, thereby ensuring the safety in the excavation process. Non-blasting efficient excavation is adopted, and the method can be suitable for any construction condition, and is particularly suitable for engineering construction with high concealment requirements and sensitive environment and ecology. Different advanced pre-supporting, excavation and section supporting can be configured according to different geological conditions, and the method can be suitable for complex geological conditions.

Description

technical field [0001] The invention relates to the field of tunnel engineering and construction of shallow buried underground caverns, in particular to a construction method for a super-large special-shaped section. Background technique [0002] With the development of underground engineering construction technology, underground has become the main facilities of railway, highway, municipal, water conservancy and national defense projects. With the improvement of the use function of underground engineering, higher requirements are also put forward for the construction of underground engineering, such as the requirement of larger span and more complex geological conditions. At present, there are relevant construction methods for large-section tunnel construction, but there are the following problems: [0003] 1. Existing projects rarely have tunnels with a span of more than 20 meters, and only some municipal projects and water conservancy projects have large-span underground...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10E21D9/12E21D11/10E21D11/15E21D11/08E21D11/18E21D20/02E21D9/14
CPCE21D9/10E21D9/12E21D11/10E21D11/15E21D11/08E21D11/18E21D20/02E21D9/14
Inventor 刘飞香刘在政郝蔚祺成飞
Owner CHINA RAILWAY CONSTR HEAVY IND