水-盐-温-力多场耦合作用模型研究综述  

A Review of Water-salt-temperature-force Multi-field Coupling Model

作　　者：吴安平 杨保存[1,2] 王荣[1] WU Anping;YANG Baocun;WANG Rong(College of Water Resources and Architecture Engineering of Tarim University,Alar,Xinjiang 843300,China;South Xinjiang Geotechnical Engineering Research Center,Tarim University,Alar,Xinjiang 843300,China)

机构地区：[1]塔里木大学水利与建筑工程学院,新疆阿拉尔843300 [2]塔里木大学南疆岩土工程研究中心,新疆阿拉尔843300

出　　处：《水利与建筑工程学报》2022年第2期216-221,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目(52068062)。

摘　　要：寒旱区盐渍土环境,在以水-盐-温-力多场耦合作用为内因的水盐干湿循环和盐冻融循环共同作用下,使该区域的岩土结构发生损伤破坏。因此,水-盐-温-力多场耦合作用模型研究成为了环境作用研究领域的热点和难点。为了在细观上定量描述水分、盐分在温度变化下相态变化所引起的结构内部应力应变,在宏观上确定水-盐-温-力多场耦合作用对岩土体的损伤破坏程度,在国内外研究学者对多场耦合数学模型研究成果的基础上,采用理论分析的方法,分别从水盐运移模型、水热耦合模型、水热力耦合模型、水热盐耦合模型、水热盐力(HTSM)四场耦合模型几个方面进行综述研究,建立了在水分迁移方程中考虑结晶水含量、在水盐运移方程中考虑结晶盐固-液相变所引起的溶质摩尔质量的变化、在热流运输方程中考虑结晶盐相变潜热的寒旱区盐渍土水-盐-温-力多场耦合作用模型,为寒旱区盐渍土多场耦合作用的岩土结构损伤破坏机理研究和防灾型结构设计提供理论依据。In the saline soil environment in the cold and arid areas,the soil structure in the area is damaged and de-stroyed by the combined action of the water-salt-temperature-force multi-field coupling effect of water and salt dry and wet cycle and the salt freeze-thaw cycle.Therefore,the study of water-salt-temperature-force multi-field coupling model has become a hot spot and a difficult point in the field of environmental interaction research.In order to quantitatively de-scribe the internal stress strain of the structure caused by the phase state changes of water and salt under temperature change in a detailed view,and to determine the degree of damage to the rock and soil mass by the multi-field coupling of water-salt-temperature-force on the macroscopic level,on the basis of the research results of domestic and foreign re-searchers on the mathematical model of multi-field coupling,the theoretical analysis method was adopted,and the four-field coupling model of water-salt transport model,hydrothermal coupling model,hydrothermal coupling model,hydro-thermal saline coupling model,and hydrothermal saline force(HTSM)were reviewed and studied in several aspects,re-spectively.A multi-field coupling model of water-salt-temperature-force in the cold and arid regions was established that considered the content of crystalline water in the water migration equation,the change in solute molar mass caused by the solid-liquid phase transition of crystalline salt in the water-salt transport equation,and the latent heat of crystalline salt phase change in the heat flow transport equation,which provided a theoretical basis for the study of the failure mecha-nism of geotechnical structure damage failure in the multi-field coupling of saline soil in cold and arid areas.

关 键 词：寒旱区盐渍土 盐-冻胀变形 多场耦合 

分 类 号：O347[理学—固体力学]