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ORIGINAL RESEARCH article

Front. Earth Sci.
Sec. Cryospheric Sciences
Volume 12 - 2024 | doi: 10.3389/feart.2024.1367771

Study on the Water-Salt Migration Law of Salinized Frozen Soil Based on the Capillary Model

Provisionally accepted
Ao Zhang Ao Zhang Zhilong Zhang Zhilong Zhang *Guang Liu Guang Liu
  • Xinjiang University, Urumqi, Xinjiang Uyghur Region, China

The final, formatted version of the article will be published soon.

    Salt expansion and frost heave are the main diseases of salted frozen soil roadbeds. Salt swelling and frost heave disease is closely related to the salted soil water-salt migration, temperature variation and salt crystallization amount change. Based on the capillary model and the unfrozen water characteristic curve, this paper establishes a coupled model of water, heat, and salt fields. The study shows that the different initial moisture contents have minimal effects on the location of soil salt migration and aggregation. The different initial salt concentrations have a substantial effect on the soil water-salt migration aggregation position, when the concentration of sodium sulphate increases, different from chloride saline soils, the position of the freezing front fluctuates up and down over time. The water-salt migration and aggregation are smaller in the closed condition, the water-salt migration and aggregation are reduced by 38% and 20%, respectively.

    Keywords: salinised frozen soil, hydrothermal salt coupling, Water-salt migration, Crystallization, Temperature variation

    Received: 09 Jan 2024; Accepted: 07 Oct 2024.

    Copyright: © 2024 Zhang, Zhang and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Zhilong Zhang, Xinjiang University, Urumqi, 830046, Xinjiang Uyghur Region, China

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