Abstract Some problems, such as forced shutdown and intervention for maintenance, are inevitably encountered when a shield tunnel passes through a complex stratum. The hyperbaric intervention method is often used to overhaul the cutterhead and cutters during construction. Compared to conventional intervention characterized by compressed air, the saturated hyperbaric intervention method largely shortens the construction period and reduces the risk of pressurized and depressurized conditions. Based on the Nanjing Weisan Road river-crossing tunnel, the operating principles of saturated hyperbaric intervention equipment, transportation and connecting equipment are systematically studied in this paper. The core components and operation essentials of key equipment, such as the living habitat and shuttle chamber, are summarized, and this summary can be a reference for intervention operations in similar projects.
Abstract：
Some problems, such as forced shutdown and intervention for maintenance, are inevitably encountered when a shield tunnel passes through a complex stratum. The hyperbaric intervention method is often used to overhaul the cutterhead and cutters during construction. Compared to conventional intervention characterized by compressed air, the saturated hyperbaric intervention method largely shortens the construction period and reduces the risk of pressurized and depressurized conditions. Based on the Nanjing Weisan Road river-crossing tunnel, the operating principles of saturated hyperbaric intervention equipment, transportation and connecting equipment are systematically studied in this paper. The core components and operation essentials of key equipment, such as the living habitat and shuttle chamber, are summarized, and this summary can be a reference for intervention operations in similar projects.
2015, Vol. 52 