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- Title
Methods of Studying the Properties of Frozen Soils and Prediction of Their Changes.
- Authors
Karpenko, F. S.; Kutergin, V. N.; Dernova, E. O.; Osokin, A. A.
- Abstract
Frozen soils have traditionally been considered as stable formations, changes in the structure and properties of which can occur only with the transition from the frozen to the thawed state. At the same time, the results of recent scientific and practical studies show that these changes are latent and begin in the frozen state. This is confirmed by the modern activation of exogenous geological processes in the permafrost zone, which is caused by currently ongoing climatic changes. Climate changes cause a natural gradual increase in the soil temperature of the permafrost zone, which changes its condition and structure. Almost everywhere, frozen soils include a gas component. It is not believed to have a significant effect on the properties of the host soils, provided that their frozen state is preserved. The current study shows that the migration of gases in frozen soils begins at very high subzero temperatures. The intensity of this process has a significant impact on the dynamics of changes in the strength properties of frozen soils in violation of the conditions of their natural occurrence as a result of temperature exposure and the action of loads. The work highlights the need for the development and practical application of new methods of determining the strength properties of frozen rocks by direct research methods, such as triaxial and shear tests. The results of such tests should serve as a basis for designing and constructing new engineering structures, as well as adapting existing structures in the regions of permafrost distribution.
- Publication
Water Resources, 2022, Vol 49, pS69
- ISSN
0097-8078
- Publication type
Article
- DOI
10.1134/S009780782208005X