摘要
在对泥沙起动的Shields曲线与明渠阻力特性之间的关系进行分析后 ,指出了无因次起动切应力与相对等效粗糙突起高度之间存在比例关系 .利用 1 82组实测资料求得了用阻力系数表示的泥沙起动阻力方程 ,该方程与泥沙粒径无关 。
After analysis of the relationship between Shields Diagram and open channel resistance characteristics, it is pointed out that the non dimensional critical shear stress is directly proportional to the relative equivalent roughness height. Based on 182 sets of data of critical incipient motion, a resistance equation at incipient motion,unrelated with particle size,is derived. This equation, together with critical shear stress or critical velocity equation, can be used to the design of stable channels.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
2000年第5期98-100,共3页
Journal of Hohai University(Natural Sciences)
关键词
泥沙起动
阻力特性
Shields曲线
稳定渠道设计
sediment incipient motion
resistance equation
shields diagram
similarity
stable channel design
