The Jianguo section of Wuhan Metro Line 11 Phase IV takes a 12.56 m CREG slurry shield TBM on a twin-bore river crossing. Each running tunnel measures roughly 4.47 km and passes through hard, high-viscosity mudstone under high water pressure, including a 540 m small-radius curve — a combination that loads the tail seal continuously across the crossing. CENTOR supplies tail grease and TBM lubrication support for the drive.
| Right line chainage | CK13+624.083 – CK9+356.231 |
| Left line chainage | CK13+624.108 – CK9+356.465 |
| Main strata | High-viscosity mudstone, relatively hard lithology |
| Minimum curve radius | 540 m |
| Configuration | Twin-bore tunnel, gravity drainage zoning |
River-crossing section; highlights high-viscosity mudstone, high water pressure and a 540 m small-radius curve.
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