Self-bonding air bag sealing device

A technology of airbag sealing and inner airbag, which is applied in shaft equipment, wellbore lining, tunnel lining, etc., can solve the problems of water leakage, mud leakage, on-site handling difficulties, and easy engineering accidents in the working well, so as to reduce the initial and The effect of reaching the risk, preventing water leakage, and enhancing the sealing effect

Inactive Publication Date: 2012-02-08
SHANGHAI TUNNEL ENGINEERING CO. LTD.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of this kind of air bag sealing device for working well hole ring in practical engineering application are: it is difficult to ensure the flatness and smoothness of the shell surface of tunnel boring equipment, and the rubber air bag is very easy to be scratched and damaged

Method used

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  • Self-bonding air bag sealing device
  • Self-bonding air bag sealing device
  • Self-bonding air bag sealing device

Examples

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Example Embodiment

[0022] See figure 1 , figure 2 As shown, the self-wrapped airbag sealing device 1 of the present invention is a ring-shaped device, which is arranged on the inner shaft wall of the tunnel working shaft close to the tunnel starting or reaching the portal, and its axis coincides with the axis of the portal , Which mainly includes a steel collar 10, a U-shaped composite cord rubber guard plate 20, and a rubber pressure inner airbag 30, which is sandwiched between the steel collar 10 and the U-shaped composite cord rubber guard plate 20 between.

[0023] Cooperate image 3 , Figure 4 As shown, the rubber pressure inner airbag 30 is an annular rubber airbag with a plurality of inlet / exhaust holes 31 provided.

[0024] Cooperate figure 2 , Figure 5 As shown, the steel collar 10 includes an annular bottom plate 11, which is fixed on the inner side wall of the tunnel working shaft close to the beginning of the tunnel or the side of the tunnel door. The outer edge of the annular bottom ...

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Abstract

The invention provides a self-bonding air bag sealing device. The self-bonding air bag sealing device comprises a steel casing ring, an internal pressure air bag and a guard plate, wherein, the steel casing ring is provided with an annular bottom plate, a sleeve is arranged on the periphery of the annular bottom plate, and the diameter of an inner ring surface of the sleeve is greater than that of peripheral surfaces of tunneling equipment and a tunnel segment structure; the internal pressure air bag is an annular air bag and is arranged in the inner ring surface of the sleeve; and the guard plate is an annular plate, is provided with an outer ring surface and an inner ring surface and is fixedly arranged on the inner ring surface of the sleeve, the section of the guard plate is in a U shape, the internal pressure air bag is clamped between the outer ring surface of the guard plate and the inner ring surface of the sleeve, and the diameter of the inner ring surface of the guard plate is smaller than that of the peripheral surfaces. The self-bonding air bag sealing device has the beneficial effects that during the traversing and removing process of the tunneling equipment, the guard plate tightly presses the shell of the tunneling equipment with the help of the internal pressure air bag so as to produce the sealing effect between the shell and tunnel segments, thus preventing the phenomena such as water leakage and mud leakage in holes.

Description

technical field [0001] The invention belongs to the technical field of building tunnel engineering construction, and relates to a sealing device for starting and arriving construction of a tunnel working well. Background technique [0002] The origination and arrival construction of tunnel working shafts is one of the main risks in underground engineering. In order to ensure the smooth and safe construction of the tunnel working well starting and arriving, it is necessary to seal the gap between the starting and arriving tunnel circle in the tunnel working well, the tunnel excavation equipment and the tunnel structure, so as to prevent the soil outside the tunnel working well circle from The soil and groundwater pour into the working well, causing the loss of soil and groundwater outside the working well, causing deformation and settlement of the surrounding strata and environmental damage. The existing tunnel working well origination and arrival construction generally incl...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D9/06
Inventor 段创峰张冠军郑宜枫巴雅吉乎魏林春侯永茂
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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