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利用不同时期黄河宁蒙河段各水文站的日均流量和日均含沙量、月均流量和月均含沙量数据,研究了流量与输沙率之间的关系,以及输沙率与流量及上游来水含沙量之间的关系。针对宁蒙河段各水文站不同时期的输沙率公式,探讨了输沙率的影响因素及输沙率公式中系数与指数关系。结果表明:黄河宁蒙河段的河道输沙率主要受河道的水力几何形态、河道来水来沙条件影响;河道输沙率公式中系数的对数与指数呈反比关系(决定系数达到0.98),并且系数和指数的大小与河道冲淤密切相关。
Based on the daily average flow rate, daily average sediment concentration, average monthly flow rate and monthly average sediment concentration of hydrological stations in Ningmeng reach of Yellow River in different periods, the relationship between flow rate and sediment transport rate and the relationship between sediment transport rate and sediment transport rate The relationship between flow and upstream sediment concentration. According to the formula of sediment transport rate at different hydrological stations in Ningmeng reach, the influencing factors of sediment transport rate and the relationship between the coefficient and index in sediment transport rate formula are discussed. The results show that the river sediment transport rate in Ningmeng reach of Yellow River is mainly affected by the hydraulic geometry of the river and the incoming and outgoing water and sediment conditions. The logarithm of the coefficient of river sediment rate is inversely proportional to the index (the coefficient of determination reaches 0.98) , And the size of the coefficient and index is closely related to river scour and silting.