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Freezing and sealing device for shield launching tunnel portal

A technology for sealing devices and portals, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems that the seepage of muddy water under pressure cannot be completely prevented, and achieve improved safety performance and effectiveness, strong sealing ability, and high sealing capacity. Leakage quick effect

Pending Publication Date: 2022-03-04
辽宁中科地下工程有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method relies on the fastening of the "cord rubber plate" and the protection of the one-way hinge plate to prevent the soil outside the cave from being lost into the well, but this cannot completely prevent the seepage of muddy water under pressure, so it is still difficult to avoid seepage with a single sealing device. Occurrence of leakage

Method used

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  • Freezing and sealing device for shield launching tunnel portal
  • Freezing and sealing device for shield launching tunnel portal
  • Freezing and sealing device for shield launching tunnel portal

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] see Figure 1-4 , a freezing and sealing device for a shield starting portal, comprising a portal steel ring 9, a hinge flap 3, a cord rubber plate 7 and a freezing tube group 8, the portal steel ring 9 is prefabricated on the bottom of an underground diaphragm wall 2 On the starting portal 22, a shield machine 1 and an underground soil layer 6 are respectively provided on both sides of the portal steel ring 9, and the portal steel ring 9 is coaxially arranged with the tunneling axis of the shield machine 1, and the folding page is turned The plate 3 and the cord rubber plate 7 are sequentially fixed on the originating portal 22 side of the portal steel ring 9 by bolts, and the portal steel ring 9 is sequentially provided with a freezing chamber 97, an air pressure chamber 92 and a The hydraulic chamber 91, the freezing tube group 8 are arranged in the freezing chamber 97, the freezing chamber 97 is arranged at the flipping place of the folding flap 3, the freezing pipe...

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Abstract

The invention discloses a shield launching tunnel portal freezing sealing device, and belongs to the field of shield tunneling machines, the shield launching tunnel portal freezing sealing device comprises a tunnel portal steel ring piece, a folding turning plate, a cord fabric rubber plate and a freezing pipe set, the tunnel portal steel ring piece is prefabricated on a launching tunnel portal of an underground diaphragm wall, and the folding turning plate is arranged on the folding turning plate; a shield tunneling machine and an underground soil layer are arranged on the two sides of the tunnel portal steel ring piece respectively, the tunnel portal steel ring piece and the tunneling axis of the shield tunneling machine are coaxially arranged, the folding turning plate and the cord fabric rubber plate are sequentially fixed to the starting tunnel portal side of the tunnel portal steel ring piece through bolts, and the tunnel portal steel ring piece is sequentially provided with a freezing bin, an air pressure bin and a water pressure bin in the tunneling direction of the shield tunneling machine. The freezing pipe set is arranged in the freezing bin and comprises an annular freezing pipe, the outer side of the annular freezing pipe is sleeved with a pipe sleeve, and the device is particularly suitable for shield tunnel entering and exiting construction of the water-containing stratum with confined water, has market prospects and is suitable for popularization.

Description

technical field [0001] The invention relates to the field of shield tunneling machines, and more specifically relates to a freezing and sealing device for a shield tunnel starting portal. Background technique [0002] The construction technology of the shield tunnel entry and exit involves the design of the working well sealing door, the reinforcement of the soil outside the sealing door, the mechanical performance of the shield and the accuracy of the guiding system, etc., which is a difficult problem in the construction of shield tunneling. For the entry and exit holes of the mud-water balance shield machine, the sealing of the building gap at the hole entrance is a key issue. If it is not properly resolved, it will cause leakage at the hole entrance and subsidence of the ground surface, resulting in unimaginable consequences. When the shield enters and exits the tunnel, the tunnel opening and the shield shell will form a ring-shaped building gap. In order to prevent a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/06
CPCE21D9/001E21D9/0635
Inventor 陆路王存举吴乐张勇石荣剑唐朝
Owner 辽宁中科地下工程有限公司
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