干旱区生态环境知识资源中心(Arid): Study of Heat-Mass Transfer and Salt-Frost Expansion Mechanism of Sulfate Saline Soil during the Unidirectional Freezing Process

Arid

DOI	10.1061/IJGNAI.GMENG-9749
	Study of Heat-Mass Transfer and Salt-Frost Expansion Mechanism of Sulfate Saline Soil during the Unidirectional Freezing Process
	Luo, Chongliang; Yu, Yunyan; Zhang, Jing; Xie, Yongbin; Zhang, Tinghua; Du, Qianzhong; Gao, Yuan; Cui, Wenhao
通讯作者	Yu, YY
来源期刊	INTERNATIONAL JOURNAL OF GEOMECHANICS
ISSN	1532-3641
EISSN	1943-5622
出版年	2024
卷号	24 期号:10
英文摘要	The water and salt movement and crystallization deformation of saline soil in cold and arid regions is a complex hydrothermal-salt-mechanical coupling problem. Based on the law of mass conservation, the law of energy conservation, and the theory of permafrost mechanics, the hydrothermal-salt-mechanical coupling mathematical model of unsaturated sodium sulfate saline soil is established. The model takes into account the latent heat of phase transition, crystallization impedance, consumption of crystallization, ice crystal self-cleaning behavior, and temperature as mechanical parameters. Numerical simulations using COMSOL Multiphysics (version 5.5) software were carried out, and the outcomes were analyzed and compared with unidirectional freezing test data. The findings show that the coupled model accurately simulates heat-mass transfer, crystallization, and salt freeze-thaw deformation in unsaturated saline soil. In the unidirectional freezing process, the temperature, salt freezing deformation, and freezing depth within the saline soil showed a three-stage rule of change, and the migration of water and salt to the freezing front made the water and salt content in the freezing zone increase significantly and form a laminar distribution, and the peak of the water and salt content appeared at the freezing front. The migration of water and salt aids in forming ice and salt crystals that rapidly grow within the soil pores of the freezing zone, leading to salt freeze-thaw deformation. Furthermore, the models and results of this study offer crucial insights into the mechanisms of soil salinization, desertification, and salt freeze-thaw deformation in cold and arid regions.
英文关键词	Unidirectional freezing test Sulfate saline soil Heat and mass transfer Salt and frost expansion COMSOL Multiphysics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001292026500012
WOS关键词	COUPLED HEAT ; POROUS MATERIALS ; WATER ; MODEL ; MIGRATION ; TRANSPORT ; STRESS ; SOLUTE ; CRYSTALLIZATION ; THAW
WOS类目	Engineering, Geological
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404242
推荐引用方式 GB/T 7714	Luo, Chongliang,Yu, Yunyan,Zhang, Jing,et al. Study of Heat-Mass Transfer and Salt-Frost Expansion Mechanism of Sulfate Saline Soil during the Unidirectional Freezing Process[J],2024,24(10).
APA	Luo, Chongliang.,Yu, Yunyan.,Zhang, Jing.,Xie, Yongbin.,Zhang, Tinghua.,...&Cui, Wenhao.(2024).Study of Heat-Mass Transfer and Salt-Frost Expansion Mechanism of Sulfate Saline Soil during the Unidirectional Freezing Process.INTERNATIONAL JOURNAL OF GEOMECHANICS,24(10).
MLA	Luo, Chongliang,et al."Study of Heat-Mass Transfer and Salt-Frost Expansion Mechanism of Sulfate Saline Soil during the Unidirectional Freezing Process".INTERNATIONAL JOURNAL OF GEOMECHANICS 24.10(2024).