Research Article
Research on the Prediction Model of Shield Advancement Rate in Sandy Cobble Ground of Beijing
Table 1
Specification of operated TBM.
| | Description | Specification |
| | Manufacturer | China Railway Engineering Equipment Group Co., Ltd | | Maximum advancement rate | 80 mm/min | | Maximum total thrust | 81853 kN | | Maximum cutter head torque | 249 kN·m | | Screw conveyor speed range | 0∼20 r/min | | Cutting diameter | 9150 mm | | Gross weight | 1250 t | | Installed power | 4500 kW | | Type | Spoke type | | Center tool | 1 | | Front cutter | 75 high shell knives | | 51 low shell knives | | Cutter | 120 | | Gauge knife | 22 × 3 | | Cutter head opening rate | 60% | | Cutter head drive system | 12 × 250 kW |
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