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Fast construction method for controlling extruded type deformation of tunnel

A technology for controlling tunnels and construction methods, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problem of inability to effectively control the deformation of the supporting steel arches, affecting the slag excavation of the upper steps, and difficult to guarantee the construction quality, etc. problems, to achieve the effect of improving construction efficiency, facilitating mechanized construction, and controllable construction quality

Active Publication Date: 2017-11-24
中路高科交通检测检验认证有限公司 +1
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AI Technical Summary

Problems solved by technology

However, the setting of temporary cross braces affects the slag discharge of the upper steps and the excavation of the lower steps, which reduces the efficiency of tunnel construction and affects the progress of tunnel construction.
On the other hand, during the step-by-step construction of the tunnel, the working space is narrow, and the installation of locking anchor bolts is difficult, and the construction quality is difficult to guarantee. cause serious casualties and property damage

Method used

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  • Fast construction method for controlling extruded type deformation of tunnel
  • Fast construction method for controlling extruded type deformation of tunnel
  • Fast construction method for controlling extruded type deformation of tunnel

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Embodiment Construction

[0029] Below with the accompanying drawings ( Figure 1-Figure 9 ) to illustrate the present invention.

[0030] figure 1 It is a schematic diagram of tunnel construction procedures implementing a rapid construction method for controlling tunnel extrusion deformation of the present invention. figure 2 yes figure 1 Schematic diagram of the longitudinal structure of the tunnel steps in . image 3 It is a schematic diagram of the excavation of arch foot foundation grooves on the left and right sides of the upper step. Figure 4 It is a schematic diagram of the initial support for the upper steps and the installation of the arch foot deformation control device. Figure 5 It is a schematic diagram of arch foot foundation grooves excavated on both sides of the middle step. Image 6 It is a schematic diagram of the initial support for the middle steps and the installation of the arch foot deformation control device. Figure 7 It is a schematic diagram of the initial support fo...

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Abstract

Disclosed is a fast construction method for controlling extruded type deformation of a tunnel. The fast construction means that relative to the construction speed or construction efficiency of arranging a common temporary transverse support, a foot locking anchor rod and the like, the speed is increased or the efficiency is improved, the fast construction is suitable for operation spaces of fractional construction of a tunnel bench cut method, primary supporting steel arch frame and arch foot deformation can be effectively controlled, so that the construction efficiency is improved advantageously, and the construction safety is ensured advantageously. The fast construction method for controlling extruded type deformation of the tunnel is characterized in that the fast construction method comprises the following steps that (1), in the fractional construction of the tunnel bench cut method, arch foot basal troughs are dug out from the left side and the right side of a previous step; and (2), arch foot deformation control devices are arranged in the arch foot basal troughs, when the arch foot deformation control devices dig downwards an adjacent next step, and hanging arm supports capable of being disassembled and assembled are formed in the a plurality arch feet longitudinally distributed in same level primary supporting.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a rapid construction method for controlling tunnel extrusion deformation. The rapid construction refers to the construction speed or construction efficiency compared with the commonly used temporary horizontal braces, locking foot bolts, etc. It speeds up the speed or improves the efficiency, and is suitable for the step-by-step construction work space of the tunnel step method. It can effectively control the deformation of the arch foot of the initial support steel arch, which is conducive to improving construction efficiency and ensuring construction safety. Background technique [0002] When tunnels are built in expansive surrounding rocks, high ground stress soft rocks and other strata, extrusion deformation will inevitably occur. At present, step method and CRD method are generally used in these strata (CRD construction, full name cross partition wall method, is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18E21D11/30E21D9/14
CPCE21D9/14E21D11/18E21D11/30
Inventor 汪成兵张翾王华牢
Owner 中路高科交通检测检验认证有限公司
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