宽级配推移质输移特性研究

针对宽级配卵石河道粗细颗粒泥沙的输移特点，提出一种反映粗化细化过程的特征参数－粗化细化程度的概念和计算方法，来描述河道粗化细化过程中输沙能力的不同特点，同时，在对床沙位置进行实测的基础上，把粗化过程和床沙位置特征参数联系起来，用床沙位置特征参数来反映，刻化粗化细化过程中的程度；由此而对非均匀粗细泥沙输移中粗化细化程度对输沙率的影响规律进行深入探讨，获得粗化细化程度对粗颗粒泥沙推移质输沙率影响的计算方法。

Bed Load Transport with a Wide Size Distribution

According to the characteristics of non-uniform bed load with a wide size distribution, a new concept and the corresponding computation method of the armoring degree for the bed material with a wide size distribution are introduced to reflect the difference of sediment transport rate in the armoring process of bed material. Based on the field data of sediment particle exposure, a parameter, which changes with the armoring process, is used to describe the degree of armoring process. The influence of the armoring degree on the non-uniform sediment transport rate is discussed, and the corresponding computation method is also obtained.