水利学报Issue(7)：810-817,8.
不等径湿颗粒与液桥相互作用的微观水力特性
Microscopic hydraulic behavior from the interactions between uneven-sized wet particles and liquid bridge
摘要
Abstract
Soil particle-level investigation of basic behavior for unsaturated soil is increasingly concerned by soil mechanics researchers. It seems easier to recognize microscopic hydraulic behavior of wet particulate material such as unsaturated soil by analyzing the interaction between wet particles and liquid bridge. A the-oretical model for the interaction between uneven-sized wet particles and liquid bridge is proposed, consist-ing of an assumed toroid-shaped liquid bridge in contact with corresponding smooth particles, at a separa-tion determined by their actual surface roughness. The volume and capillary force of the liquid bridge be-tween them are related to matric suction, ratio of particle radius, solid-liquid contact angles, and rough-ness of the particles. In addition, equilibrium between liquid and liquid vapor is also analyzed. Finally, the model can be in good accordance with the test data of capillary force versus particle separation in the past literature.关键词
湿颗粒材料/非饱和土/毛细作用力/液桥/球体颗粒Key words
wet particulate material/unsaturated soil/capillary force/liquid bridge/sphere particle分类
建筑与水利引用本文复制引用
张昭,刘奉银,张国平,郑方..不等径湿颗粒与液桥相互作用的微观水力特性[J].水利学报,2013,(7):810-817,8.基金项目
国家自然科学基金项目（10872162）；陕西省黄土力学与工程重点实验室重点科研计划项目（11JS070）；西安理工大学优秀博士学位论文研究基金资助 （）
