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The steel sleeve used for shield tunneling is used in the shield tunnel to ensure that the tunnel door is sealed and water-tight when the shield tunneling machine is launched or received when the shie
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The steel sleeve used for shield tunneling is used in the shield tunnel to ensure that the tunnel door is sealed and water-tight when the shield tunneling machine is launched or received when the shield machine is launched or received in a water-rich sand layer or the surrounding environment is complex. Create a closed environment and make a supporting steel structure. The steel sleeve is integrated with the embedded steel ring at the tunnel entrance. The cylinder is usually divided into three sections, with the upper and lower parts connected through flanges, and the sealing is achieved by the seal between the flanges.
1. Wide applicability. It is suitable for various complex strata, especially when the geological conditions at the end of the tunnel are poor and the reinforcement construction is difficult, the shield steel sleeve has obvious advantages for starting and receiving construction.
2. Recycle. The shield steel sleeve is composed of multiple steel structures, which can be assembled and disassembled multiple times, and can be recycled multiple times in the same shield tunnel. Although the manufacturing cost is high, repeated use will amortize the cost and save a lot of foundation reinforcement costs. It is especially more economical on lines with many shield tunnels.
3. Safety and environmental protection. The use of steel sleeves to assist shield initiation and reception can better control various risks during the construction process. It will have little impact on surrounding buildings and underground pipelines, and will basically have no impact on the surrounding water and soil environment.
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