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.
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Sistema de Potabilización Área Norte – Access Shaft #3
After groundfreezing, the joint venture was successfully able to construct a permanent access shaft structure without any of the prior leaks, soil movement, or other problems.
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Port of Miami Tunnel
Ground freezing was selected to provide ground stabilization and water cut-off for Port of Miami Tunnel Cross Passages 2 and 3, located eighty to one hundred and twenty feet below sea level.
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No. 7 Line Extension Project
Ground freezing was chosen to safely maintain stability, restrict groundwater inflow and limit settlement of the overlying structures to support hand-mining excavation.
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Eastside CSO
The East Side Combined Sewer Outflow (CSO) Tunnel Project located in Portland, Oregon involved providing a ground freezing system to assist in the hand-mining of a tunnel between the existing Confluent Shaft and the new Port Center Shaft.
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Boston Central Artery Tunnel
Ground freezing enabled the jacking of three massive tunnels just beneath seven active Amtrak lines serving Boston’s South Station and the financial district.
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