挟沙水流的流速分布是泥沙动力学中一个尚有争议 的问题，为了深入研究这一问题，对爱因斯坦和钱宁等的变k模式和Coleman模式进 行了进一步分析。发现变k模式的k值与Coleman尾流强度系数Π之间存在一一 对应的关系，并推导了这一数学关系。最后利用多组实测挟沙水流流速分布资料对这一关系 进行了验证。

Velocity distribution of sedimentladen flow is sti ll a problem having controversial views.For further studying this problem, Einst ein & Chien's concept of the varying Karman coefficient and Coleman's opinion of wake function are reanalyzed.It is found that the Karman coefficient of varying k and wake flow strength coefficient of Coleman have a one to one relation. This mathematical relationship is derived from two velocity distribution equatio ns.A lot of sets of measured data have been used to verify this relationship. 