- MECHANIZED TUNNELING & TBM SYSTEMS
Slurry Shield TBM
- Engineered for High Hydrostatic Water Pressure & Loose Sand/Gravel Ground
- Precise Face Pressure Control with ± 0.1 bar ±0.1 bar Accuracy
- Excavation Diameters Ranging from 4 to 15+ Meters
Slurry Shield TBM
The Slurry Shield Tunnel Boring Machine (Slurry TBM) is engineered for tunneling through unstable, loose, sandy, and gravelly ground conditions subjected to high hydrostatic water pressure. In this advanced system, excavation face stability is dynamically maintained via a pressurized bentonite slurry, while excavated materials are continuously transported out of the tunnel through a closed-loop hydraulic slurry circulation circuit.
- Applications
- Sub-River and Underwater Crossing Tunnels
- Saturated Sand, Silt, and Gravel Strata
- Deep Urban Metro and Infrastructure Tunnels
- Subsea, Offshore, and Coastal Tunneling Projects
- Technical Specifications
| Parameter | Value |
|---|---|
| Boring / Excavation Diameter | 4 to 15 m |
| Ground Type Suitability | Sand / gravel / high water soil |
| Balance System | Slurry pressure system |
| Muck Extraction Method | Slurry circulation |
| Pressure Control Accuracy | ± 0.1 bar ±0.1 bar |
| Installed Power | 800 kW to +7000 kW |
| Face Working Pressure | Up to 10 bar (Special models) |
- Key Features & Benefits
- Delivers pinpoint face pressure control within ± 0.1 bar ±0.1 bar to counteract extreme underground water and soil pressure effectively.
- Purpose-built to stabilize highly permeable, loose sand and water-bearing ground, completely preventing face collapse and sinkholes.
- Hydraulic pipe muck extraction ensures clean, continuous, and dust-free transport of cut rock and gravel directly to the surface separation plant.
- Robust pressurized shield design operates reliably under extreme depths and high-pressure sub-river and subsea conditions up to 10 bar.