Structure for preventing differential settlement of shield tunnel and implementing method

• Main Authors: SUN KEGUO, XU WEIPING, YANG PENG, YUAN ZIYI, WANG HUJIA, HOU ZONGHAO
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2019
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAFTS; TUNNELS

The invention discloses a structure for preventing differential settlement of a shield tunnel. The structure comprises an arc bottom supporting pipe sheet and a plurality of arc ordinary supporting pipe sheets, and the bottom supporting pipe sheet and the ordinary supporting pipe sheets are spliced into a tunnel. The outer side of the bottom supporting pipe sheet is provided with an air bag, the air bag is connected with an inflation pipeline through a connector, and the inflation pipeline is connected with an inflation device arranged on the inner side of the bottom supporting pipe sheet. Theconnector is provided with an air pressure detection device. An implementing method of the structure for preventing differential settlement of the shield tunnel comprises the steps from the first step to the seventh step, since mucky clay in a sludge stratum is not stable, differential settlement of the tunnel is caused in the long-term running process, the mucky clay is fluid-like, and the supporting and floating effect