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Non-blasting penetration method for tunnel in complex environment

A complex environment, non-blasting technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as low efficiency and high labor intensity, and achieve the effects of firm lap joints, improved service life, and high construction efficiency

Active Publication Date: 2020-04-21
中国铁建投资集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a non-explosive penetration method for tunnels in complex environments, which solves the problem of low efficiency and high labor intensity caused by manual excavation in the prior art

Method used

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  • Non-blasting penetration method for tunnel in complex environment
  • Non-blasting penetration method for tunnel in complex environment
  • Non-blasting penetration method for tunnel in complex environment

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Embodiment Construction

[0039] The following is further described in detail through specific implementation methods:

[0040] The reference signs in the accompanying drawings of the specification include: a long tube shed 100 , a tunnel outline 101 , a borehole 102 , and a rope 103 .

[0041] A non-blasting penetration method for tunnels in complex environments, comprising the following steps:

[0042] S1: Measurement stakeout

[0043] Combined with the current industry standard "Code for Metro Engineering Survey", use instruments such as total stations to measure the surrounding contour section, design drawings, and use guide marks to mark the design start line, end line, engineering boundary line, center line and turning point, etc. And according to the setting of milestones and sub-construction marks. The specific measurement construction method is:

[0044] (1) Control of plane axis

[0045] According to the control reference points provided by the construction unit, use the total station to ...

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Abstract

The invention relates to the technical field of tunnel construction, and specifically discloses a non-blasting penetration method for a tunnel in a complex environment. The method comprises the following steps that measuring and lofting are carried out to form a tunnel contour line; advanced support is carried out, and a ring of long pipe roof is designed along the tunnel contour line; excavationand support are carried out, all drilling or spacing drilling is carried out along the tunnel contour line, and block exploding and stripping are carried out; mortar and anchor rods are used for construction, after holes are drilled, the anchor rods and grouting pipes are simultaneously inserted into the holes for pouring the mortar; a steel frame is installed, grooves are excavated on the foundation to erect the steel frame, the steel frame is fixed to the anchor rods, and concrete is sprayed on the steel frame; a reinforcing mesh is used for construction, a layer of concrete is sprayed to form a spraying surface, and the reinforcing mesh is laid on the spraying surface; and the concrete is sprayed, the spraying route is in the form of zonal and segmented spiral movement from bottom to top, and a spray head does continuous circular motion to spray spirally. Through the adoption of the method, the non-blasting penetration of the tunnel can be completed in the complex environment, the influence on the surrounding environment is reduced, and the tunnel construction is successfully completed at the same time.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a non-explosive penetration method for complex environment tunnels. Background technique [0002] In construction projects, complex construction environments are often encountered. Taking the rail project under construction in a certain city as an example, there are many buildings around the proposed site, and the horizontal distance from the elevated section of another rail transit line is close. The original landform of the proposed site belongs to structural denudation hilly landform, and it is located in the center of the city. The original landform is mostly destroyed, and the surface is mostly urban roads and other buildings (structures). ~3°, local steep slopes are formed, and the slope angle is about 40°; therefore, for such a construction environment, the foundation pits and interval tunnels at the proposed site should be excavated mechanically or manually in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/00E21D20/02E21D11/10E21D11/15
CPCE21D9/00E21D9/003E21D11/00E21D20/021E21D11/10E21D11/152
Inventor 罗汝洲段向虎刘小剑马南飞王永海顾垒余国生王宏伟鲁勇飞杨蕾廖书文石志波董国桢丁海峰
Owner 中国铁建投资集团有限公司
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