Ground Freezing is a special support technique that can be used for ground water control and excavation support.
The basic principle of ground freezing is to circulate a cold medium through a suitable pipe system, which cools the strata and thus converts the in-situ pore water to ice. The ice is so formed bonds adjacent soil particles together and forms an impermeable structure with increased strength characteristics.
Main Advantages of Ground Freezing:
Limits of this Technique:
permeable, non-cohesive soil conditions with a high groundwater flow
The first application of Ground Freezing in combination with NATM / SEM in the US, designed by DSC, has been accomplished in Boston, MA by tunneling beneath the historic Russia Wharf Complex.
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