【摘要】 本文讨论了当前习用的六家推移质公式,把它们转化为由同样的无量纲参数组成的函数关系,这样就可以直接进行比较.比较结果表明,在低强度输沙条件下,它们之间虽有一定差别,但从河床演变的实用观点来说,大部分公式的差别并不是很大.各家公式在高强度输沙条件下分散较广,实验资料还不足以对此作出明确的结论.在水流很强时,爱因斯坦公式所给出的推移质输沙率有可能偏小.英格伦公式虽给出较好的结果,但在理论推导过程中存在一些漏洞,从现阶段来看,拜格诺公式具有最广阔的远景.更多还原

【Abstract】 There are six bed load formulas as proposed by Meyer- Peter, Einstein, Bagnold, Engelund, Yalin and Ackers-White respectively which are currently in use throughout the world.In this paper these formulas are transformed into relationships between same dimensionless parameters such that they can be compared directly. The results indicate that at low rates of transport, in spite of the fact that certain discrepencies existed between various formulas, and yet the difference is of minor importance from the practical view point of fluvial processes. Different formulas deviate widely at high rates of transport, and the experimental data available do not allow one to draw a definite conclusion. When the flow intensity is high, the transport rate of bed load as given by Einstein formula might be too small. Although Engelund formula gives a fairly good result for all flow conditions, there is much ground for believing that the theoretical derivation of the formula fails to be consistent after (?)>0.5 . It appears at present that the approach as proposed by Bagnold opens up a new prospect to the research of bed load transport.更多还原