摘要
本文是作者４０ 年来研究泥沙起动公式的小结。文中对颗粒间的粘结力、水的下压力和阻力等有关参数进行了修改。通过瞬时作用流速，明确了三种起动状态间的关系，消除了起动切应力和起动流速间的不协调。对导得的起动切应力公式和起动流速公式进行了较为全面的验证，说明公式较好地反映了粗、细颗粒泥沙和轻质沙的起动规律。
The author's studies on incipient motion of sediment in the recent 40 years are summarized in the paper. In addition to the gravity, drag and lift, the cohesive force and additional static pressure are considered which are of importance for fine particles. The relations between three stages of incipient motion are defined by using instantaneous velocity. The formulas for initial velocity and critical shear stress are given and examined in all their aspects by the author and other's experiments.
出处
《泥沙研究》
CSCD
北大核心
1999年第6期1-9,共9页
Journal of Sediment Research
关键词
泥沙
起动流速
临界发应力
起动规律
sediment
incipient motion
initial velocity
critical shear stress
