There has been a trend in recent years in performing the initial formation freezing using liquid nitrogen (LIN) and then converting the system to circulating refrigerated brine. While proponents of this method state it decreases freezing time, it can also be considered an alternative to inadequate refrigeration capacity.
Read MoreDesign of frozen Earth structure for cross passage excavation
Ground freezing offers several advantages over other methods of ground improvement. The design of frozen Earth structure for cross passage excavation is discussed.
Read MoreGround Freezing for Tunnel Shafts and Adits
Ground freezing from the surface was selected as the the most technically appropriate method to provide temporary earth support and groundwater control during sewer tunnel construction as part of of D.C. Water’s Clean River Project. In addition, ground freezing provided significant advantages to accommodating the citizens in the neighborhood.
Read MoreA successful case of water cut-off by ground freezing
This paper describes the field and laboratory testing as well as the engineering analysis required for freezing to permit excavation below the existing liner plates and into the underlying bedrock.
Read MoreShaft Freezing in Buenos Aires
Ground freezing was used to complete a shaft excavation that had been previously attempted using a slurry diaphragm wall and jet grouting. The freezing was completed around both the damaged shaft and the existing tunnel.
Read MoreGround Freezing for Tunnel Cross Passages
By freezing the zone between the two larger tunnels, the contractor can mine through the hard, water-tight ground without collapse or groundwater infiltration.
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