水流挟沙能力公式的转化与统一

Transformation and unification of the formulas for sediment trasport capacity in sediment-laden flows

本文首先基于悬移质运动效率系数等泥沙悬浮能耗的概念建立了水流挟沙能力统一结构式公式;然后对前人众多的水流挟沙能力公式进行分类、归纳为含沙量型与输沙率型两种主要形式,并通过进一步的推导转化,可将现行的主要挟沙能力公式统一于结构公式中,表明统一结构公式具有良好的通用性与实用性。文中最后应用黄河、长江等大量的天然实测资料对张红武等4家同时能适应于高、低含沙水流挟沙力公式的可靠性进行验证分析,结果表明张红武和作者公式的计算精度比较符合实际,建议在实际工作中加以应用。

Based on the sediment suspension energy and efficiency coefficient of suspendedload motion in sediment laden flows,a unified structural formula for sediment transport capacity in sediment-laden flows was obtained.By means of classification analysis and derivation,the existing formulas suggested by previous authors were classified into two main structral types,including the type of sediment concentration and sediment transport amount.The reliability of the four representative formulas of sediment transport c...