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Permeation grouting integrated rod suitable for shield tunnel, and construction method

A technology of shield tunneling and integrated rods, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc. It can solve problems such as soil instability and complex construction, and achieve the dissipation of super-gap water pressure. It has a wide range of applications and strong practicability Effect

Pending Publication Date: 2019-01-04
ZHENGZHOU UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, this method will cause soil instability due to the asynchronous construction process of grouting and drainage
And the grouting and drainage are arranged separately, the construction is more complicated

Method used

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  • Permeation grouting integrated rod suitable for shield tunnel, and construction method

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] Such as figure 1 As shown, a permeation grouting integrated rod suitable for shield tunneling includes grouting rod 1, permeation rod 2 and grouting pipe 3. Both grouting rod 1 and permeation rod 2 are tubular structures, and the grouting rod 1 A plug 4 is fixed at the head end, and the tail end of the grouting rod 1 is sealed and fixedly connected with the head end of the permeation rod 2 . The first end of the penetration rod 2 is fixed with a partition 5, the partition 5 divides the grouting rod 1 and the penetration rod 2 into two chambers, and the tail end of the penetration rod 2 is fixed with an end plate 6, and the end plate 6 divides the penetration rod 2 into two chambers. end seal. Grouting holes 7 are evenly distributed on the surrounding wall of the grouting rod 1, and water seepage holes 8 are evenly distributed on the peripheral wall of the permeatin...

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Abstract

The invention relates to a permeation grouting integrated rod suitable for a shield tunnel, and a construction method of the permeation grouting integrated rod. The permeation grouting integrated rodcomprises a tubular grouting rod, a tubular permeation rod and a grouting tube, wherein a plug is fixed to the head end of the grouting rod, the tail end of the grouting rod is sealed and fixedly connected with the head end of the permeation rod, a partition plate is fixed to the head end of the permeation rod, an end plate is fixed to the tail end of the permeation rod, slurry outlets are evenlyformed in the peripheral wall of the grouting rod, water penetration holes are evenly formed in the peripheral wall of the permeation rod, the grouting rod sequentially passes through the end plate and the partition plate and then extends into the grouting rod, a water outlet pipe is fixed on the end plate, and the water outlet pipe is communicated with the permeation rod after passing through theend plate. The permeation grouting integrated rod has the functions of grouting and drainage, thus can quickly and effectively dissipate excessive pore water pressure caused by shield tunneling, quickly improve the effective stress of a formation soil mass, improving the secondary grouting and grouting reinforcement effect during operation, integrates the permeation rod and the grouting rod, is convenient for installation and convenient to use, and is applicable to the fields of tunnel engineering, underground engineering seepage reinforcement and the like.

Description

technical field [0001] The invention relates to the technical fields of subway engineering, road and railway traffic tunnel engineering, etc., and specifically relates to an infiltration grouting integrated rod suitable for shield tunnels and a construction method. Background technique [0002] Now the construction of subways, underground highways and railway transportation channels is in full swing across the country. Underground transportation has the advantages of high transportation efficiency and large carrying capacity, and has become an effective way to relieve transportation pressure and speed up regional economic construction. The shield tunneling method is the most commonly used construction method for underground tunnels. During the shield tunneling process, excessive pore water pressure is generated due to the disturbance of the surrounding stratum soil caused by the shield tunneling during excavation. If the excess pore water pressure around the tunnel segment I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/38E21F16/02
CPCE21D11/105E21D11/38E21F16/02
Inventor 寇磊闫林徐建国王博连芳雷
Owner ZHENGZHOU UNIV
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