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Tunnel expanding pre-reinforcing system suitable for shallow burying and reinforcing method thereof

A pre-reinforcement and tunnel technology, applied in the direction of tunnel, tunnel lining, earth drilling and mining, etc., can solve the problem that the construction risk cannot be pre-controlled, and achieve the effect of preventing excessive stress release.

Pending Publication Date: 2021-01-22
山西豫能兴鹤铁路联运有限公司 +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

There are construction risks that cannot be pre-controlled, and adjustments are made while working, and passive operations bring great safety risks to construction personnel and machinery

Method used

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  • Tunnel expanding pre-reinforcing system suitable for shallow burying and reinforcing method thereof
  • Tunnel expanding pre-reinforcing system suitable for shallow burying and reinforcing method thereof
  • Tunnel expanding pre-reinforcing system suitable for shallow burying and reinforcing method thereof

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Embodiment Construction

[0030] Attached below Figure 1-4 , the specific implementation of the present invention will be described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The present invention provides a tunnel expansion pre-reinforcement system suitable for shallow burial, including:

[0032] The support frame 1 comprises a first door-type bracket 11, a second door-type bracket 12 and a third door-type bracket 13, and the second door-type bracket 12 and the third door-type bracket 13 are respectively arranged on the first door-type bracket 11 and parallel to the first door-shaped bracket 11, the second door-shaped bracket 12 is hinged with the first door-shaped bracket 11 through a hinge...

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Abstract

The invention discloses a tunnel expanding pre-reinforcing system suitable for shallow burying and a reinforcing method thereof, and belongs to the technical field of underground engineering and tunnel engineering. A second door-shaped support and a third door-shaped support of the tunnel expanding pre-reinforcing system are arranged on the two sides of a first door-shaped support correspondinglyand are parallel to the first door-shaped support, the second door-shaped support is hinged to the first door-shaped support through a hinge part, and the third door-shaped support is fixedly connected with the first door-shaped support; height adjusting devices are arranged at the tops of the door-shaped supports, a mounting frame is arranged on the height adjusting devices, and a plurality of first hydraulic jacks are arranged on the mounting frame; a plurality of second hydraulic jacks are arranged between a side web and stand columns; and the first hydraulic jacks are arranged between thearch crown part of the web and the mounting frame. According to the tunnel expanding pre-reinforcing system suitable for shallow burying and the reinforcing method thereof, the front-section consolidation section of the tunnel-expanding pre-reinforcing system serves as a rigid supporting point, the rear section of the tunnel-expanding pre-reinforcing system adopts a hinged adjustment stress transmission point, adjustment and change are carried out along with blasting stress and surrounding rock counterforce, and dynamic loading equipment for active intervention protection and passive unloadingbalance is achieved.

Description

technical field [0001] The invention relates to the technical field of underground engineering and tunnel engineering, in particular to a tunnel expansion pre-reinforcement system and a reinforcement method suitable for shallow buried tunnels. Background technique [0002] Existing tunnel expansion or reconstruction needs can be roughly divided into traffic volume increase, new ventilation or escape space, old tunnel repair and reinforcement, etc. [0003] As the excavation progresses, the initial support of the expanded excavation section is also continuously applied, the constraints provided by the surrounding rock and support structure inside the tunnel change accordingly, the stress of the surrounding rock is adjusted accordingly, and the direction and magnitude of the deformation of the initial support structure are also changed. In the process of continuous change, it is necessary to ensure that the initial support structure after expansion can bear the corresponding s...

Claims

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Application Information

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IPC IPC(8): E21D23/04E21D23/16E21D11/18E21D9/01
CPCE21D11/18E21D23/04E21D23/16E21D9/01
Inventor 魏方晓李国栋朱小红牛鸿武孙艳杰杨新昉陈谦亮岳峰梁玉茂闫志长李君
Owner 山西豫能兴鹤铁路联运有限公司
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