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土壤盐渍化是目前众多交叉学科研究的一个热点问题,涉及到土壤学、环境科学、岩土工程等学科知识.科学认识土壤中水盐迁移模式及运移机理,对农业工程治理土壤盐渍化以及路基工程预防路基盐渍化具有重要意义.介绍了国内外农业工程领域比较认同的水分迁移模式(毛细管作用假说、薄膜水迁移理论、结晶力理论与吸附—薄膜理论)、盐渍土离子迁移方式(渗流迁移、扩散迁移与渗流—扩散混合迁移)与土壤中水-热、水-盐、水-热-盐运移机理与模型,以及公路工程领域相关的研究进展,并对相关模型原理、异同点、优缺点、适用性及应用状况进行了分析评价.
Soil salinization is one of the hot issues in many interdisciplinary research, which involves the knowledge of soil science, environmental science, geotechnical engineering, etc. Scientifically understanding the mechanism of water and salt migration and migration in soil, As well as subgrade engineering to prevent embankment salinization is of great significance.This paper introduces the comparatively accepted water migration patterns (capillary action hypothesis, membrane water migration theory, crystallization force theory and adsorption-membrane theory) in agricultural engineering at home and abroad, The research progress on the mechanism and model of water-heat, water-salt, water-heat-salt transport in soil and the related research progress in the field of highway engineering are also discussed. The relevant models (such as seepage migration, diffusion migration and seepage-diffusion mixed migration) Principle, similarities and differences, advantages and disadvantages, applicability and application status were analyzed and evaluated.