The #1 threat during the excavation of a new tunnel is in rush of water. The uncontrolled water can wreak havoc on an operation if conditions aren’t meticulously and continuously monitored.
The best prevention method is ensuring groundwater with a high inflow rate doesn’t drain through a tunnel interior and should be channelized. At GCPL, our veteran engineers have highly precise methods of doing just that.
- 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
- Rock Type
- Water source availability
- In-situ Stresses
- Strata Orientation
- Shear Zones
- Thrust Zones