- MECHANIZED TUNNELING & TBM SYSTEMS
Dual Mode TBM
- Seamless On-the-Fly Switching Between EPB and Slurry Modes
- Excavation Diameters Ranging from 4 to 15 Meters
- Dual Pressure Control & Hybrid Muck Extraction (Screw + Slurry System)
Dual Mode TBM
The Dual Mode TBM combines Earth Pressure Balance (EPB) and Slurry Shield technologies into a single advanced tunneling platform. Engineered specifically for complex projects with highly variable, unpredictable, and transitioning geology, this machine allows real-time switching between excavation modes without interrupting the tunneling drive—eliminating the need for machine replacement and drastically mitigating geotechnical risks.
- Applications
- Urban Metro and Subway Lines with Highly Variable Strata
- Complex Urban Underground Infrastructure Projects
- Mixed-Ground Formations (Sand, Hard Rock, Saturated Silt, and High Water Inflow)
- Long-Distance Alignment Transitions Requiring Multi-Ground Excavation
- Technical Specifications
| Parameter | Value |
|---|---|
| Operating Modes | EPB + Slurry |
| Boring / Excavation Diameter | 4 to 15 m |
| Mode Conversion Capability | Online / On-the-fly during excavation |
| Muck Extraction System | Screw Conveyor + Slurry Circulation System |
| Face Pressure Control | Dual-Mode Closed Control |
- Key Features & Benefits
- Seamlessly adapts to sudden ground changes between cohesive clay, running sand, fractured rock, and high water head.
- Minimizes geotechnical hazards and prevents ground settlement by matching the optimal excavation mode to current ground layers.
- Eliminates the massive downtime, cost, and logistics of machine replacement or intermediate shaft construction.
- Combines robust screw conveyor mechanical extraction with high-pressure slurry hydraulic pumping in a single cutterhead chamber design.