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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