水利学报Issue(10)：1199-1204,6.DOI:10.13243/j.cnki.slxb.2014.10.008
水流挟沙力的统计理论计算方法及其应用
Statistical theory-based method of sediment carrying capacity and its application
摘要
Abstract
It is an important filed of sediment carrying capacity studies to solve it as a two dimensional problem. Using the statistical theory-based method of non-uniform sediment carrying capacity, the formulae were deduced for sediment carrying capacities of suspended load and bed load transport rate, as well as the ratio of bed load to suspended sediment based on the state probabilities and grain size distribution of effective bed material. The formulae have been validated with the data of flow and sediment in the Lower Yellow River,and are contrasted with calculations of empirical formulae. The results indicate that the group⁃ing transportation capacity calculated with the statistical theory formulae at low and medium concentration of non-uniform sediment is more correct and reasonable, and the total transportation capacity calculated with the empirical formulae is more accurate. The ratio of bed load to suspended sediment calculated with the statistical theory formula is more stable, varying between 0.06 and 0.11 in the Lower Yellow River, and the statistical theory formula can be used to calculate the bed load quantity of lack survey.关键词
泥沙统计理论/悬移质挟沙力/推移质输沙率/推悬比/黄河下游Key words
sediment statistical theory/carrying capacity of suspended sediment/rate of transportation of bed load/ratio of bed load to suspended sediment/Lower Yellow River分类
建筑与水利引用本文复制引用
陈绪坚,胡春宏..水流挟沙力的统计理论计算方法及其应用[J].水利学报,2014,(10):1199-1204,6.基金项目
十二五国家科技支撑计划课题 （）
