黄河水流挟沙力的计算公式

Formula of Sediment Carrying Capacity of the Yellow River

通常的水流挟沙力公式很难直接应用于黄河。本文从水流能量消耗和泥沙悬浮功之间的关系出发,考虑了泥沙存在对卡门常数和泥沙沉速等的影响,给出了半经验半理论的水流挟沙力公式。经较大范围的实测资料检验,计算值与实测值符合良好,说明该公式对不同的河床条件有较强的适用性。

It is difficult to use the ordinary formula to calculate the sediment carrying capacity of the Yellow River. In consideration of the influence of existed silt to Kaman constant and silt deposition, this paper started from the relationship between the lost energy of flow and the needed floating power of sediment, giving a formula of half experiment and half theory to calculate the sediment carrying capacity. Examining by large amount of measured datum, it has showed that the formula is fairly accurate and can be adopted in many different river bed conditions.