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Supporting method suitable for large deformation of mudstone tunnel

A large deformation, tunnel technology, applied in the direction of tunnel, tunnel lining, earthwork drilling, etc., to achieve the effect of improving construction safety, reducing construction cost, and speeding up construction progress

Pending Publication Date: 2022-04-29
中铁十五局集团第三工程有限公司 +1
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Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned existing problems in the prior art, and provide a support method suitable for large deformation of mudstone tunnels. In the process of dealing with the encroachment problem of surrounding rock deformation in carbonaceous mudstone tunnels, reinforcement The support structure improves the initial support's ability to resist the deformation of surrounding rock. If there is a limit problem, it can be handled safely and quickly to ensure the thickness of the lining

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  • Supporting method suitable for large deformation of mudstone tunnel
  • Supporting method suitable for large deformation of mudstone tunnel
  • Supporting method suitable for large deformation of mudstone tunnel

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[0030] The present invention will be described in detail by the following exemplary embodiments. However, it should be understood that the elements, structures and features of one embodiment can also be beneficially combined with other embodiments without further description.

[0031] It should be noted that unless otherwise defined, the technical terms or scientific terms used in this paper should have the ordinary meaning understood by people with ordinary skills in the field to which this invention belongs. Similar words such as "a", "a" or "the" used in the specification and claims of the patent application of the present invention do not indicate the quantity limit, but indicate the existence of at least one. Similar words such as "including" or "including" indicate that the elements or objects in front of "including" or "including" now cover the elements or objects listed after "including" or "including" and their equivalents, but do not exclude other elements or objects wit...

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Abstract

The invention discloses a construction supporting method suitable for large deformation of a mudstone tunnel. The construction supporting method comprises the following specific steps that firstly, a corresponding reinforcing supporting structure is selected according to tunnel investigation data and the deformation condition after primary supporting; secondly, a tunnel is excavated through a bench method, and then primary concrete spraying, reinforcing mesh laying, arch frame erecting, foot-lock anchor rod arranging and radial anchor rod drilling are sequentially conducted, and then concrete is re-sprayed to the designed thickness; the upper step part, the left side part of the lower step and the right side part of the lower step are sequentially constructed; thirdly, according to different surrounding rock deformation conditions, different arch frame supporting structures are arranged in an arch frame of the primary supporting structure; fourthly, an inverted arch part is excavated; and fifthly, after the tunnel is subjected to different pretreatments according to different invasion and limit degrees, secondary lining pouring is completed. According to the scheme, the capacity of resisting surrounding rock deformation of the primary support is improved, and the problem can be safely and rapidly solved to ensure the lining thickness.

Description

Technical field [0001] The invention belongs to the technical field of prevention and control of surrounding rock deformation in carbonaceous mudstone tunnels, and particularly relates to a support method suitable for large deformation of mudstone tunnels. technical background [0002] With the improvement of the transportation system, there are more and more intersections between new railways and existing roads. Tunnels are widely used for improving traffic lines, saving land occupation and project investment. However, in the construction process, how to solve the problem of surrounding rock deformation of mudstone tunnel, ensure the safety of tunnel construction and ensure the thickness of lining has become a difficult problem for the whole construction industry. Especially in the area of carbonaceous mudstone, the self-stabilization ability is poor, it is easy to soften when it meets water, and it is easy to collapse. How to prevent this problem, ensure construction safety and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/18E21D20/00E21D20/02
CPCE21D11/105E21D11/18E21D11/183E21D20/003E21D20/021
Inventor 王继东陈浩然李梦微陈秀雯魏红涛王凯军杜宗烨郭涛席昆梁斌
Owner 中铁十五局集团第三工程有限公司
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