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针对土体微观结构与其宏观力学特性之间的关系问题,采用常规固结实验、土水特征曲线实验和扫描电镜观察的方法,研究了土体微结构与其土水特性之间的关系.结果表明:在排水过程中,随着平面孔隙比增大,土样含水度呈现出先增大再减小的变化趋势.在吸水过程中,随着平面孔隙比的增大,土样含水度呈现出先增大后减小再增大的变化趋势.土样的排水能力和吸水能力达到最大值时,其对应的平面孔隙比是不同的.
According to the relationship between microstructure and macroscopic mechanical properties of soil, the relationship between soil microstructure and soil-water characteristics was studied by using conventional consolidation experiment, soil-water characteristic curve experiment and scanning electron microscope observation. The results show that During the process of water drainage, the soil water content increases first and then decreases with the increase of the plane porosity ratio.With the increase of the plane porosity ratio, the soil water content shows the first increase The trend of decreasing and then increasing is bigger.When the drainage capacity and water absorption capacity of soil sample reach the maximum, the corresponding plane void ratio is different.