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选取来家铺弯道3个断面为研究对象,分析了河湾内水力特征参数(平均水深、平均流速、流量、弗劳德数)与悬沙浓度及断面输沙率的关系,探讨了无量纲参数宽深比、宽径比与悬沙浓度、输沙率的关系及相关性。结果表明:弯道平均水深、平均流速及流量越大,悬沙浓度及断面输沙率也越大,弗劳德数与弯道悬沙输移则无明显规律;宽深比、宽径比与悬沙浓度、悬沙输沙率并非简单的单值关系且规律性不强;弯道进口断面水力特征与悬沙输移的相关系数由高到低依次为流量、宽深比、宽径比、平均流速、平均水深及弗劳德数,弯道内断面水力特征与悬沙输移的相关系数由高到低依次为流量、平均流速及平均水深,但弗劳德数、宽深比及宽径比与悬沙输移的相关程度很弱或负相关。
In this paper, the three cross sections of Beijiapu bend are selected as research objects. The relationship between hydraulic parameters (average water depth, average velocity, flow rate, Froude number) and suspended sediment concentration and cross-section sediment transport rate is analyzed. Parameters of aspect ratio, aspect ratio, suspended sediment concentration, sediment transport rate and correlation. The results show that the average water depth, the average velocity and the flow rate of the curve are larger, the suspended sediment concentration and sediment transport rate of the section are larger, and there is no obvious regularity between the Froude number and the suspended sediment transport. The aspect ratio, aspect ratio And the suspended sediment concentration and suspended sediment transport rate is not a simple single value relationship and regularity is not strong; curve cross-section hydraulic characteristics and suspended sediment transport correlation coefficient descending order of flow, width to depth ratio, width The average flow velocity, the average water depth and the Froude number, the correlation coefficient of the hydraulic characteristics and the suspended sediment transport in the curve from high to low were the flow rate, the average flow velocity and the average water depth, but the Froude number, the aspect ratio The correlation between aspect ratio and suspended sediment transport is weak or negatively correlated.