GROUNDWATER CUTOFF WALL

Ground Freezing For Shoring And
Groundwater Cutoff
Shallow Excavations
Shallow Excavations—Small Site
Shallow Excavations—Large Site
Deep Excavations
Tunneling

• Because frozen soil has very low permeability (less than 10^-10 cm/sec) it is very effective as a groundwater cutoff.

• A frozen soil cutoff can be used to prevent groundwater from entering open pit mines, gravel pits, landfills and other similar facilities that are below groundwater.

• Eliminates or greatly reduces the need for dewatering.

• Can also be used to stop the migration of contaminated groundwater near streams or lakes.

• Maintenance of a buried frozen soil cutoff is relatively inexpensive making it competitive for long-term cutoffs.