The understanding of unsaturated soil mechanics principles is of interest to a wide spectrum of geotechnical problems associated with soils above water table and compacted soils. This paper describes the stress state variables and constitutive equations based on the unsaturated soil mechanics principles. In addition, the basic concepts for characterization of unsaturated soils and measurements of matric suction (or negative pore-water pressures) are also explained. The application of unsaturated soil mechanics theories is illustrated through the use of capillary barrier system for minimizing rain infiltration into residual soil slopes.

中文翻译：

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非饱和土力学在岩土工程中的作用

对非饱和土壤力学原理的理解对于与地下水位上方的土壤和压实土壤有关的各种岩土工程问题都有兴趣。本文基于非饱和土力学原理，描述了应力状态变量和本构方程。此外，还解释了用于表征非饱和土壤和测量基质吸力（或负孔隙水压力）的基本概念。非饱和土力学理论的应用通过使用毛细屏障系统来最大程度地减少雨水渗入残留土质边坡的方式来说明。