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Deep-buried earth pressure balance shield tunnel-entering double-air-bag sealing device and sealing method thereof

An earth pressure balance shield and sealing device technology, which is applied in mining equipment, earth square drilling, mining equipment, etc., can solve problems such as technical or operational deficiencies, improve the sealing success rate, prevent mud and sand leakage, and ensure safety Effect

Active Publication Date: 2020-10-27
SHANGHAI UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above situation, the present invention provides a double-airbag sealing device for deep-buried earth pressure balance shield tunneling and its sealing method, which solves many technical or operational deficiencies in existing shield tunneling sealing devices

Method used

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  • Deep-buried earth pressure balance shield tunnel-entering double-air-bag sealing device and sealing method thereof
  • Deep-buried earth pressure balance shield tunnel-entering double-air-bag sealing device and sealing method thereof
  • Deep-buried earth pressure balance shield tunnel-entering double-air-bag sealing device and sealing method thereof

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Embodiment Construction

[0037] In the existing shield tunnel construction, the shield tunnel entry technology is difficult, the reinforcement cost is high, it is not easy to seal, there are many hidden dangers in construction safety, and it is prone to collapse and water leakage. Improvements were made to develop a sealing device with fast inflation speed, small size, convenient operation, and long-term pressure retention, which greatly reduces the risk of disturbance to the surrounding environment when entering the tunnel, and can realize the safety of shield tunneling in ultra-deep soil and even high-pressure water conditions. Hole entry is of great significance to ensure the safety of deep buried shield tunneling construction.

[0038] In order to facilitate the understanding of the present invention, the following will be described in conjunction with the accompanying drawings and embodiments.

[0039] see figure 1 , figure 2 As shown, the present invention provides a double-airbag sealing dev...

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Abstract

The invention provides a deep-buried earth pressure balance shield tunnel-entering double-air-bag sealing device and a sealing method thereof. The deep-buried earth pressure balance shield tunnel-entering double-air-bag sealing device comprises a tunnel ring, at least two high-pressure rubber air bags and a rubber plate; the tunnel ring is fixed to the outer side of a tunnel-entering opening of the shield; the at least two high-pressure rubber air bags are used for filling gaps between the tunnel ring and the shield and between the tunnel ring and a duct piece after being expanded, the at least two high-pressure rubber air bags are arranged in the tunnel ring in parallel in the shield propelling direction, each high-pressure rubber air bag is connected with a medium filling pipeline, and the tunnel ring is provided with a filling channel for the medium filling pipelines to penetrate out; and the rubber plate expands along with the expansion of the high-pressure rubber air bags, the rubber plate is arranged outside the high-pressure rubber air bags in a covering mode, and the two sides of the rubber plate are fixed to the tunnel ring. According to the sealing device, the risk that the surrounding environment is disturbed when the shield enters the tunnel is greatly reduced, and the shield can safely enter the tunnel under the conditions of ultra-deep soil covering and even highconfined water.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a double-airbag sealing device and a sealing method for a deep-buried earth pressure balance shield tunnel entry. Background technique [0002] In Shanghai, Tianjin, Ningbo and other soft soil areas, the shield method has been used to construct subway interval tunnels and intake and drainage tunnels, and has accumulated rich practical and theoretical experience. One of the main problems to be solved is mainly manifested in: soil collapse, causing annular gap (shield shell and hole ring or segment and hole ring) flowing water and quicksand, shield machine kowtow, segment fragmentation and seam tension Opening, etc., will directly lead to soil subsidence, affect the surrounding environment, and even cause major accidents such as pipeline breakage and ground collapse. The existing technology mainly adopts soil reinforcement measures at the outer side of the working sh...

Claims

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Application Information

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IPC IPC(8): E21F17/107E21F17/103E21D9/06
CPCE21D9/06E21F17/103E21F17/107
Inventor 张孟喜黄德中张晓清刘喜东李刚杨志豪卢康明郭潇阳陈培新范杰管攀峰王衍丰柯宁静李亚博寇晓勇王嘉烨
Owner SHANGHAI UNIV
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