Study on water and salt migration and deformation properties of unsaturated saline soil under temperature gradient

doi:10.13722/j.cnki.jrme.2020.0447

IR > 土木工程学院

	Study on water and salt migration and deformation properties of unsaturated saline soil under temperature gradient
	Zhou, Fengxi1,2 ; Zhou, Lizeng 1; Wang, Liye 1; Li, Shuangyang 2
	2020-10-01
发表期刊	Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
ISSN	10006915
卷号	39 期号:10 页码:2115-2130
摘要	Based on the porous media theory and the continuum mechanics, a fully coupled water-heat-salt-force multi-field model for unsaturated saline soil under temperature gradient is established. The model obeys the conservation laws of mass, energy and momentum of the three-phase system of solid, liquid and gas, takes into account the influences of porosity evolution, water seepage, gas transport, salt desorption-adsorption effect and compressibility of solid particles and pore fluids, and hence, can more accurately describe and explain the heat and mass migration processes and deformation characteristics in unsaturated saline soil. In addition, by selecting the basic unknowns such as porosity, pore water pressure, pore gas pressure, temperature, salt content and displacement, the above multi-field coupling process is simulated by using Comsol Multiphysics software. The mathematical model and simulation results are verified by the experimental results. The results show that the model can well reveal the water and salt migration mechanism and deformation mechanism of unsaturated saline soil under temperature gradient. At the same time, the process of numerical analysis has further deepened the understanding of water and salt migration and deformation processes of saline soil. The study of salt adsorption also provides theoretical preparation for further study of salt expansion of saline soil. © 2020, Science Press. All right reserved.
关键词	Continuum mechanics Deformation Hydrocarbon seepage Porosity Porous materials Soil conservation Soils Thermal gradients Deformation Characteristics Deformation mechanism Deformation properties Mathematical modeling and simulation Migration mechanisms Multi-field coupling Pore-water pressures Porosity evolutions
DOI	10.13722/j.cnki.jrme.2020.0447
收录类别	EI
语种	中文
出版者	Academia Sinica
EI入藏号	20204309383326
EI主题词	Saline water
EI分类号	444 Water Resources ; 483.1 Soils and Soil Mechanics ; 641.1 Thermodynamics ; 931.1 Mechanics ; 931.2 Physical Properties of Gases, Liquids and Solids ; 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/151035
专题	土木工程学院
作者单位	1.College of Civil Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou; Gansu; 730000, China
第一作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Zhou, Fengxi,Zhou, Lizeng,Wang, Liye,et al. Study on water and salt migration and deformation properties of unsaturated saline soil under temperature gradient[J]. Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,2020,39(10):2115-2130.
APA	Zhou, Fengxi,Zhou, Lizeng,Wang, Liye,&Li, Shuangyang.(2020).Study on water and salt migration and deformation properties of unsaturated saline soil under temperature gradient.Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,39(10),2115-2130.
MLA	Zhou, Fengxi,et al."Study on water and salt migration and deformation properties of unsaturated saline soil under temperature gradient".Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering 39.10(2020):2115-2130.