Tunnel engineering
Our tunnel engineering work covers investigation, preconstruction and construction phase investigation. These stages include primary site exploration, detailed surface investigations, detailed sub-surface investigations and tunnel mapping.
General tunnel engineering
We cover all types of tunnel engineering, including:
- Rock tunnelling
- Cut and cover tunnels
- Bored tunnels
- Immersed tunnels
- New Austrian Tunnelling Method (NATM) tunnels
Tunnels in soft soils
For tunnels and other underground structures in soft soils, we apply different types of retaining and stabilising methods, including:
- Secant pile walls
- Diaphragm walls
- Sheet pile walls
- Ground anchors
- Reinforced soil
- Driven piles
Tunnels in rock
Drawing on our experience in a number of land tunnel and sub-sea tunnel projects, we work on all phases of rock tunnel and large cavern engineering projects, including:
- Primary site exploration
- Detailed surface investigations
- Detailed sub-surface investigations and tunnel mapping
- Preliminary field investigations
- Main investigations
- Tunnel mapping based on Q-method
- Rock-support
- Grouting
- Problems caused by water
- Ventilation design