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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。
Aiming at the characteristics of transport of coarse and fine particles of sand and gravel in wide-graded riverbed, a concept and calculation method that reflects the characteristic parameters of the roughening and refining process, ie, the degree of coarsening and thinning, is proposed to describe the process of river course coarsening and thinning Different characteristics of sediment transport capacity. At the same time, based on the measurement of the bed sand position, the relationship between the roughening process and the characteristic parameters of the bed sand position is analyzed. The characteristic parameters of the bed sand position are used to reflect the extent of the roughening and refining process. The effects of the degree of coarsening and thinning on the sediment transport rate are discussed in depth, and the calculation method of the influence of the degree of coarsening and thinning on the sediment transport rate of coarse sediment is obtained.