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用压力板法和回归分析法研究了基质吸力对非饱和黄土强度性质的影响。结果表明，非饱和黄土的基质吸力与饱和度在双对数座标上呈直线关系；起始基质吸力与液限、塑性指数及粘粒含量呈线性规律变化；有效应力影响系数与其起始基质吸力呈线性关系，且随粘粒含量的增大而增大。
The influence of substrate suction on the strength of unsaturated loess was studied by pressure plate method and regression analysis. The results show that the matric suction and saturation of unsaturated loess show a linear relationship on the double logarithmic scale. The initial matric suction and liquid limit, plasticity index and clay content change linearly. The influence coefficient of effective stress and its initial matrix The suction has a linear relationship and increases with the increase of clay content.