Description
Risk Faced
- Shear zones
- High in-situ Stress
- Problematic Soil / Water
- Weak Rock
- Difficult to quantify and uncertain
- Limited working access to mitigate
- High risks during construction
- Great uncertainties with high risks for Long and deep tunnels


Challenges
- Rock Type
- Water source availability
- Seismicity
- In-situ Stresses
- Strata Orientation
- Shear Zones
- Thrust Zones