Ground Freezing – an overview
- Frozen Ground Support
- Tunnel Excavation
Frozen ground creates “rock-like” strength for tunnel excavation
- Excavating Frozen Soil
Groundfreezing is a construction technique that has been used of over one hundred years to provide temporary earth support and groundwater control. Applications are found in the underground civil, mining and environmental remediation industries. [Read More...]
Recent Ground Freezing applications
Keeping it Cool in the Big Apple
Paul Schmall, PE, Vice President and Chief Engineer, and Dr Joseph Sopko, PE, Regional Manager, with specialty geotechnical contractor Moretrench, discuss how ground freezing techniques have kept TBMs on course for various projects in New York City [Read More...]

Largest Frozen Ground Excavation in North America For Excavation of Crown Pillar
Following the success of other ground freezing projects in the area, an ambitious scenario was proposed which would result in the largest ever frozen ground excavation in North America. The field and laboratory investigations are described as well as the engineering analyses used in the design of the 61-meter diameter, 35-meter deep frozen earth cofferdam.No. 7 Line Tail Tunnel Freeze
The South Tail Tunnel of the No. 7 Subway Line in NYC recently required ground freezing and permeation grouting to provide ground stabilization and groundwater cutoff. [Read More...]
