非均匀悬移质恢复饱和系数的探讨

Investigation on coefficient of saturation recovery of non-uniform suspended load

作者利用概率论的方法,分析了分组沙的恢复饱和系数与混合沙的平均恢复饱和系数之间的关系,得出了分组沙的恢复饱和系数与混合沙的平均沉速成正比,与该粒径组泥沙的沉速成反比的初步结论。文中给出了一个计算分组沙恢复饱和系数的半理论半经验关系式,并与现有研究成果进行了对比。

The authors investigated the coefficient of saturation recovery(CSR) for nonequilibrium transportation of nonuniform suspended load in terms of probability theory.A primary conclusion was that the CSR of size group was in an inverse proportion to the falling velocity of the size group and in a direct proportion to the mean falling velocity of the mixed sediment particles.Finally,a semiempirical formula was presented for calculating the CSR of a certain size group of nonuniform suspended load.Compared with the results of two existing methods for calculating the CSR,the presented method is a simple and effective one.