The calculation result indicates that for a given starting condition, the coefficient is not a constant, but varies with the relativeexposure degree of grain.
The formula for calculating the incipient motion condition of non-uniform sediment has been established by considering the equivalent grain and the relativeexposure degree.
阐述了泥沙起动机理,通过对等效粒径概念及表达式的引入,推得了泥沙起动公式。
3
The formula shows the transport rate is not a constant but varies with the relativeexposure degree of particles that lying on riverbed when the flow intensity is at fixed value.