ИСТИНА

In the permafrost propagation areas, the thermal interaction between constructions and foundation soil leads to the thawing of soil and, therefore, to the loss of soil bearing capacity. The salinity of soils, which is specific for marine plains (Yamal peninsula, etc.) and North Seas’ shelf areas, which can contain cryopegs, has significant negative impact on this process. On the chemical composition, cryopegs are close to marine waters, their mineralization corresponds to 10-250 g/l, and ground freezing temperature can be very low. These factors lead to the necessity of thermostabilization of foundation soil in case of choosing the construction mode with its preservation in a frozen state.