EPB shield machine Beijing subway construction

Machine Parameters Thrust: 36,000 kN Operating torque: 5,600, kNm *8981 High torque: 7,275, kNm *8981 Large stroke: 2,100, mm Cutterhead drive: Electric drive, frequency conversion Cutterhead power: 800kW Cutterhead speed: 3.0 rpm Screw conveyor: Shaft Screw conveyor diameter: 900,mm *8981 high pressure: 4 bar Machine Features Cutterhead: Spoked type, soft ground (can be used for sand and pebble formation, composite formation after appropriate modification) Open Ratio: 37% Tools: tungsten carbide, shell cutter Articulation: Active Back-wall grouting: Single-liquid Segment arrangement: Concrete structure, 300mm thick, 5+1 arrangement Human Warehouse: Double Chamber Project Info Project Name: Beijing Metro Line 6 Phase II Bid 15 Project Address: Haojiafu - Eastern New Town, Beijing, China Number of machines: 1 machine diameter: 6.18m Tunnel length: 1*1.1km Geology: clay, silt, silt STM062AII Tunnelling Report October 2013. Started and completed by January 15, 2014. The total length of the tunnel is 1,064 meters, and the excavation was completed in 98 days, with an average daily excavation of 10.8 meters. STM062AII Tunneling record *8981 good day 22 rings, 26.4m *8981 good week 105 rings, 126 m *8981 good month 346 rings. 415m