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以自然分水线划分子流域,利用克利金插值法由雨量站雨量插值各子流域中心点的雨量代替面雨量.模型中分别利用初损后损法、分布式单位线和指数消退模型计算产流、直接径流过程和基流过程.为了考虑洪水特性对河道汇流模型参数的影响,采用动态参数马斯京根模型演算各段河道洪水.在河南省干江河流域的应用结果表明:29场洪水中,洪峰流量相对误差小于20%的为93%,洪量相对误差小于20%的为97%,峰现时间误差小于2 h的为100%,确定性系数大于0.7的为90%.
The watersheds were divided by natural watersheds, and the rainfalls were interpolated from the rainfall of the rainfall stations at the center of each sub-basin using Kriging interpolation method.The loss of surface rainfalls were calculated by using the method of post-traumatic loss method, distributed unit line and exponential extinction model Flow, direct runoff process and base flow process.In order to consider the impact of flood characteristics on the confluence model parameters, the dynamic parameters of Muskingum model were used to calculate the flood of each section of river.The results of application in Qianjiang River Basin in Henan Province showed that 29 floods , The relative error of flood peak is less than 20% for 93%, the relative error of flood is less than 20% for 97%, the peak time is less than 2 h for 100%, and the certainty coefficient is greater than 0.7 for 90%.