01Reference II · Hubei — China
Yinjiang–Buhan Water Diversion — Bid Section 5-1
National Water Diversion · Single-Shield TBM
Bid Section 5-1 of the Yinjiang–Buhan Water Diversion Project drives 12.1 km of water conveyance and return water tunnel with a single-shield TBM at 12.23 m excavation diameter. The alignment runs from K8+360 to K21+630 through ground characterised by high geostress, high water pressure and high rock strength — conditions that put sustained demand on the shield's sealing and lubrication systems. CENTOR supplies tail grease and TBM lubrication support across the drive.
Project Data
LocationHubei Province, China
Project TypeWater conveyance & return water tunnel
TBM TypeSingle-shield TBM
Excavation Ø12.23 m
Tunnel Length12.1 km total
ChainageK8+360 – K21+630
CENTOR ScopeTail grease · TBM lubrication support
TBM Type
Single-Shield
Hard-rock single shield
Excavation Ø
12.23 m
Bored diameter
Tunnel Length
12.1 km
Conveyance and return water tunnel
CENTOR Scope
Tail Grease
Full TBM lubrication support
Drive Breakdown
| Section | Length |
|---|---|
| TBM72-2 | 2.562 km |
| 5A Construction Section | 4.642 km |
| 5B Construction Section | 3.058 km |
| 5C Construction Section | 0.101 km |
| 5D Construction Section | 2.899 km |
| Total | 12.1 km |
Alignment Features
- Underpass of the Yinhan–Jiwei Canal — mined section 1,256 m
- Minimum overburden 46 m — mined section 1,057 m
- 11# Adit, also serving as construction adit — 353.9 m
- TBM working shaft — 41.1 m depth, with construction adit
- 5# and 13# adits along the alignment
- Comprises both a water conveyance tunnel and a return water tunnel
Geology & Engineering Conditions
High geostress, high water pressure and high rock strength; faults, groundwater and soft-rock deformation are the key risks.
