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作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2021, Vol. 43 ›› Issue (2): 437-452.doi: 10.7522/j.issn.1000-0240.2020.0090

• 寒区工程与灾害 • 上一篇    下一篇


付子腾1,2(), 吴青柏2, DYCK Miles3, 何海龙1()   

  1. 1.西北农林科技大学 资源环境学院,陕西 杨凌 712100
    2.中国科学院 西北生态环境资源研究院 冻土工程国家重点实验室,甘肃 兰州 730000
    3.Department of Renewable Resources,University of Alberta,AB,T6G 2H1,Canada
  • 收稿日期:2019-08-02 修回日期:2020-06-22 出版日期:2021-04-30 发布日期:2021-05-18
  • 通讯作者: 何海龙 E-mail:fuziteng@lzb.ac.cn;hailong.he@hotmail.com
  • 作者简介:付子腾,博士研究生,主要从事寒区陆面过程研究. E-mail: fuziteng@lzb.ac.cn
  • 基金资助:

A new model to describe soil freezing-thawing characteristic curve

Ziteng FU1,2(), Qingbai WU2, Miles DYCK3, Hailong HE1()   

  1. 1.College of Natural Resources and Environment,Northwest A & F University,Yangling 712100,Shaanxi,China
    2.State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.Department of Renewable Resources,University of Alberta,AB,T6G 2H1,Canada
  • Received:2019-08-02 Revised:2020-06-22 Online:2021-04-30 Published:2021-05-18
  • Contact: Hailong HE E-mail:fuziteng@lzb.ac.cn;hailong.he@hotmail.com



关键词: 土壤冻融特征曲线, 未冻水含量, 初始含水量, 溶质浓度, 模型


The hydrothermal change of frozen soil can be described by the soil freezing-thawing characteristic curve (SFTC), which is the relationship between the unfrozen water content and the subfreezing temperature. A clear understanding of SFTC is crucial for studying the freezing process and coupled water-heat migration in frozen soil. In previous studies, the application scope of SFCT model is narrow, which can not correspond to practical needs. This study considered the influence of initial water contents and solute concentrations on unfrozen water content, proposed a new mathematical model for estimating SFTC. The Nash efficiency coefficient is generally greater than 0.95 based on validating published datasets. The new model performs well in soils with different physical characteristics, such as initial water contents, solution concentrations and it can be better and more widely used compared with the selected five literatures available SFTC models. In addition, sensitivity analysis showed that the factors affecting the parameters of proposed model are related to soil properties such as soil solution and residual water content. The new model enables us to better understand the process of water and heat transfer in soil freezing-thawing process, and serves as a solid theoretical foundation for the engineering and environmental studies and associated numerical simulation in the cold regions under climate change.

Key words: soil freezing-thawing characteristic curve, unfrozen water content, initial water content, solute concentrations, model


  • S152.7