Active stress eliminating device for tunnel construction and active stress eliminating method

A technology of active stress and tunnel construction, which is applied in tunnels, tunnel linings, shaft equipment, etc., can solve the problems of loose sand and pebble structures and a large number of potholes, and achieve the effect of increasing friction and reducing working hours

CN110700864AActive Publication Date: 2020-01-17HANGZHOU ZHUILIE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-01-17

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Abstract

The invention discloses an active stress eliminating device for tunnel construction and an active stress eliminating method, and relates to the technical field of tunnel construction. The active stress eliminating device for tunnel construction comprises a force eliminating arch frame, the upper surfaces of two positioning feet are welded to the two ends of the force eliminating arch frame respectively, the force eliminating arch frame is provided with connecting ports which are circumferentially distributed by taking the circle center of the force eliminating arch frame as the center, the force eliminating arch frame is provided with anchor holes, a cavity is formed in the force eliminating arch frame, the middle of the outer side face of the force eliminating arch frame is provided withthirteen guiding holes communicating with the cavity, and the portions, corresponding to the guiding holes, of the back face and the front face of the force eliminating arch frame are provided with inclined holes communicating with the cavity separately. According to the active stress eliminating device for tunnel construction, extrusion rods and a jetting mechanism can be pushed through special-shaped transmission bags in a pneumatic extrusion mechanism, quick and effective supporting on the inner wall of a tunnel is achieved, and influences of stress on the inner wall structure of the tunnelare quickly eliminated.
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Description

[0001] This application is a divisional application with an application date of May 23, 2018 and an application number of CN201810499167.5, whose title is an active stress relief device for loose sand and pebble geological tunnel construction. technical field

[0002] The invention relates to the technical field of tunnel construction, in particular to an active stress relief device and an active stress relief method for tunnel construction. Background technique

[0003] Excavating tunnels in different regions will encounter various terrains. Some terrains are conducive to tunnel construction, while others will bring great difficulties to tunnel construction. For example, tunnel construction in loose sand and pebble geology. After the tunnel is dug into a hole, the loose sand and pebbles on the tunnel wall are under enormous stress, and the tunnel is prone to loose deformation and collapse, threatening the safety of workers.

[0004] Chinese patent (authorized publication nu...

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0038] see Figure 1-6 , the present invention provides a technical solution: an active stress relief device for the construction of loose sand and pebble geological tunnels, comprising a stilling arch 1, two ends of the stilling arch 1 are respectively welded with two upper positioning feet 2 On the surface, the stilling arch 1 is provided with joints 3 arranged around the center of the stilling arch 1. The joints 3 are used to connect adjacent stilling arches 1, and the stilling arch 1 is provided with Anchor hole 4, anchor hole 4 is used for the anchor rod to realize the positioning between the stilling arch 1 and the inner wall of the tunnel, which belongs to the w...