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Numerical Modeling of Frozen Soils
A vast portion of the exposed land surface is covered by perennially frozen ground in the form of permafrost covers. Some typical problems associated with these frozen soils, among others, are freezing of foundations, frost heaving, and thaw settlement. These phenomena affect civil infrastructure and buildings in these permafrost regions. The void spaces in frozen soils are partially filled by ice and by unfrozen water. The amount of unfrozen water in a frozen soil depends on a number of factors, such as freezing temperature, type of soil, and pore size. A good understanding of the water transfer process in frozen soils and its interaction with the mechanical and thermal behaviors is crucial for an accurate assessment of the behavior of these soils. The flow of unfrozen water in frozen soils can be explained using the concept of unsaturated water flow in soils utilizing the concept of cryogenic suction (i.e., difference between ice and liquid pressures). This paper focuses mainly on the transfer of unfrozen water in frozen soils and its modeling. The approach is based on a formulation for unsaturated soils, which has been adapted to the particular conditions of frozen soils. Laboratory tests related to the flow of unfrozen water in permafrost is analyzed and discussed.
Numerical Modeling of Frozen Soils
A vast portion of the exposed land surface is covered by perennially frozen ground in the form of permafrost covers. Some typical problems associated with these frozen soils, among others, are freezing of foundations, frost heaving, and thaw settlement. These phenomena affect civil infrastructure and buildings in these permafrost regions. The void spaces in frozen soils are partially filled by ice and by unfrozen water. The amount of unfrozen water in a frozen soil depends on a number of factors, such as freezing temperature, type of soil, and pore size. A good understanding of the water transfer process in frozen soils and its interaction with the mechanical and thermal behaviors is crucial for an accurate assessment of the behavior of these soils. The flow of unfrozen water in frozen soils can be explained using the concept of unsaturated water flow in soils utilizing the concept of cryogenic suction (i.e., difference between ice and liquid pressures). This paper focuses mainly on the transfer of unfrozen water in frozen soils and its modeling. The approach is based on a formulation for unsaturated soils, which has been adapted to the particular conditions of frozen soils. Laboratory tests related to the flow of unfrozen water in permafrost is analyzed and discussed.
Numerical Modeling of Frozen Soils
Shastri, Ajay (author) / Sanchez, Marcelo (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 3476-3486
2014-02-24
Conference paper
Electronic Resource
English
Numerical Modeling of Frozen Soils
| British Library Conference Proceedings | 2014
Modeling the thermal conductivity of frozen soils
| Elsevier | 1993
| Elsevier | 2022