Moisture Transfer and Formation of Separate Ice in the Freezing Process of Saturated Soils
| Autor: | Huiwu Luo, Peishuai Chen, Enlong Liu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Hydraulic engineering
Materials science 010504 meteorology & atmospheric sciences Geography Planning and Development 0211 other engineering and technologies Mineralogy 02 engineering and technology Astrophysics::Cosmology and Extragalactic Astrophysics Aquatic Science moisture transfer 01 natural sciences Biochemistry Flux rate Physics::Geophysics lcsh:Water supply for domestic and industrial purposes frozen soils lcsh:TC1-978 Saturated soils Analysis method Physics::Atmospheric and Oceanic Physics 021101 geological & geomatics engineering 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Computer simulation Moisture separate ice the flux rate water-resisting layer Astrophysics::Earth and Planetary Astrophysics the criterion for formation of ice lens Moisture transfer Ice lens |
| Zdroj: | Water Volume 12 Issue 4 Water, Vol 12, Iss 1044, p 1044 (2020) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12041044 |
| Popis: | The formation and layer of ice lenses during the freezing of soil in cold regions is closely related to frozen heave and moisture immigration. The purpose of the paper is to explain the physical mechanisms pertaining to ice lens formation, which were analyzed and verified using numerical simulation results. Based on a few assumptions, the formation and layers of ice lenses are illuminated in the following steps: the initial stage of freezing, formation of the first layer of ice lens, formation of the second layer of ice lens, and formation of the final layer of ice lens. Compared with the numerical results of coupled thermo&ndash hydro&ndash mechanical simulations of one-side freezing of soil columns in an open system, the proposed analysis method of the formation and layers of ice lenses is verified to be reasonable, and it is demonstrated that the classical criterion for the formation of ice lens in freezing saturated soil is only suitable for the final layer of ice lens. Finally, a new criterion, in terms of flux rate, for the formation of ice lens is proposed. |
| Databáze: | OpenAIRE |
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