水文地质工程地质2011，Vol.38Issue(6)：49-55,7.
非饱和重塑黄土基质吸力变化特征与物理性质的关系
Correlations between matric suction of unsaturated remouided loess soils and their physical properties
摘要
Abstract
This paper shows the investigation results of the effect of physical properties of remoulded loess soils on the variation in the matric suction of unsaturated remoulded loess soils via laboratory test, which was particularly focused on the analysis of correlations between main physical properties and characteristic values at some critical points of soil-water characteristic curves. The results show that, for the remolded loess soils, water content, saturation and matric suction at some critical point of the soil water characteristic curves, have closer correlations with dry density than that with particle size distribution. With the increase of dry density, characteristic saturation of transition zone and residual saturation increase linearly, saturated water content and characteristic water content of transition zone decreases linearly, and residual matric suction and characteristic matric suction of transition zone respectively increases linearly and nonlinearly. Specifically, both characteristic saturation of transition zone and residual saturation have linear correlation with clay content, while fairly reverse linear correlation with silt content. Saturated water content has linear correlation with silt content, while residual matric suction has reverse linear correlation with it. Microstructures of the soils illustrated that the insights of these correlations are controlled by the pore structure and relationships between particles.关键词
非饱和重塑黄土/土-水特征曲线分段特征值/干密度/粘粒含量/粉粒含量Key words
unsaturated remoulded loess soils/characteristic value at some critical point of the soil water characteristic curve/dry density/clay content/silt content分类
建筑与水利引用本文复制引用
闫亚景,文宝萍..非饱和重塑黄土基质吸力变化特征与物理性质的关系[J].水文地质工程地质,2011,38(6):49-55,7.基金项目
国家自然科学基金项目资助(40872182) （40872182）
