-MECHANIZED TUNNELING & TBM SYSTEMS
EPB TBM
Earth Pressure Balance Tunnel Boring Machine
- Advanced Earth Pressure Balance for Soft, Clay, & Saturated Ground
- Large Excavation Diameters from 3 to 16 Meters
- Laser-Guided Precision & Heavy-Duty Hydraulic Thrust System
EPB TBM – Earth Pressure Balance Tunnel Boring Machine
The Earth Pressure Balance Tunnel Boring Machine (EPB TBM) is a premier mechanized tunneling solution manufactured by CREG, engineered specifically for soft ground, clay, sand, and high water-pressure geological conditions. By maintaining precise equilibrium between the excavation face pressure and the surrounding ground pressure, it effectively prevents tunnel collapse and surface settlement, ensuring maximum safety in challenging urban and infrastructure projects.
- Applications
- Urban Metro and Subway Tunneling Projects
- Wastewater, Sewage, and Water Transmission Tunnels
- Shallow Urban Underground Infrastructure
- Saturated, Soft, and Highly Unstable Ground Conditions
- Technical Specifications
| Parameter | Value |
|---|---|
| Boring / Excavation Diameter | 3 to 16 m |
| Ground Type Suitability | Soft soil / clay / sand / mixed ground |
| Face Working Pressure | Up to 6 bar (Model dependent) |
| Muck Extraction System | Screw Conveyor |
| Installed Power | 500 kW to 6000+ kW |
| Machine Length | 80 to 150 m (With Backup System) |
| Guidance & Steering System | Laser Guidance System |
| Thrust / Support System | Hydraulic Thrust System |
- Key Features & Benefits
- Controlled pressurized muck chamber balanced with the screw conveyor prevents ground settlement and surface subsidence in sensitive urban areas.
- Equipped with heavy-duty hydraulic thrust cylinders delivering massive forward drive force across varying soil layers and mixed ground conditions.
- Integrated high-precision laser alignment and guidance systems ensure strict adherence to tunnel design alignment and curved trajectories.
- Regulated screw conveyor mechanism guarantees smooth, paste-like excavated material discharge while maintaining continuous face pressure integrity.