Discussion on Graded Modeling for SedimentLaden - capacity of Flow

摘要

The paper starts with analyzing the none — equilibrium conditions of non —uniform suspended — load transport, taking into account of mass research findings and calculation method published at home and abroad, as well as the measured data of the subject for years, and established a formula system fitting the nature of the Yellow River and its sediment laden — capacity of flow. We believe that the grouped laden — capacity gradation of flow is connected not only to the gradation to bed sediment, but also to the upstream coming sediment, and thus it is a result of the interaction between a certain coming water — sediment and the bed boundary conditions. We carried out verification of the established model on the sediment scour — slitting in the Yellow River with measured data during 1960~ 2004 and concluded that the model fits the actual case well.