Ground freezing was selected to provide ground stabilization and water cut-off for the 2nd Avenue Subway expansion project. The use of ground freezing permitted safe mining operations with the TBM.Read More
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
Ground Freezing for Tunnel Support
No. 7 Line Subway Extension
New York City
Joseph A. Sopko, Ph.D., P.E.
Michele R. Norman