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监视和预测地下水污染以及利用水利措施进行盐碱地改良时,需研究可溶物质在多孔介质中的运移规律,分析影响溶质分散、运移的因素,并对溶质在多孔介质中的分布作出定量评价。近年来国内外学者对溶质运移的微观机理和宏观分布特性进行了较深入的研究,并对各种计算方法进行了探讨。溶质在多孔介质中运移的基本理论是水动力弥散理论。溶质在随地下水的运动过程中,逐步分散并占据越来越大的范围。这种分散作用由两部分
When monitoring and predicting groundwater pollution and using water resources measures to improve the saline-alkaline soil, study the transport law of soluble substances in porous media, analyze the factors affecting the dispersion and migration of solute, and quantitatively evaluate the distribution of solute in porous media. . In recent years, scholars at home and abroad have conducted in-depth research on the microscopic mechanism and macroscopic distribution characteristics of solute transport, and discussed various calculation methods. The basic theory of the transport of solute in porous media is hydrodynamic dispersion theory. As the solute moves with groundwater, it gradually disperses and occupies an increasingly larger range. This dispersion consists of two parts