Tunnel Boring Machine
Tunnel boring machines bore through soft soils, gravel, and rock. They are used for constructing utility, rail, highway, and metro system tunnels.
Technical Specifications
Overview
Earth Pressure Balance Tunnel Boring Machine
This Earth Pressure Balance (EPB) Tunnel Boring Machine is engineered for safe and efficient excavation across diverse geological conditions, including soft soils, gravel, cobble, and weathered rock. By utilizing excavated material as a support medium within the excavation chamber, the machine effectively balances pressure to prevent ground settlement. It is an ideal solution for urban infrastructure projects such as metropolitan metro systems, utility tunnels, and rail networks.
Technical Capabilities
Suitable Ground Conditions
ClaySandy SoilComposite GroundWeathered RockHard Rock
- Diameter Range
- Small (3-5m)Normal (5-8m)Large (>8m)
Key Components
Key Components
- Cutterhead with cutting tools
- Shield for ground support
- Thrust system for forward propulsion
- Screw conveyor for muck removal
- Segment erector for tunnel lining
- PLC system for real-time monitoring
Operational Metrics
Operational Highlights
3 m
Min Diameter
8 m+
Max Diameter
Project References
Project Diameter Examples
| Application | Diameter |
|---|---|
| Instructional TBM | 3,180 |
| Instructional TBM | 3,600 |
| Sewage/Cable Tunnel | 3,730 |
| Water Transfer Project | 4,030 |
| EH Tunnel Project | 5,450 |
| Metro Tunnels | 6,250 |
