模式单位线的推求与应用

Determination and Application of Mode Unit Hydrograph

单位线与之对应的影响因素，构成了一个模式单位线。模式单位线是由选择的历史洪水经过聚类，然后由同类型洪水推求出来的，因而提高了单位线的代表性。单位线用曲线分段拟合，简化了推求和修改中设试过程，便于计算机实现。文中以柴河水库为背景，对此法进行了详细说明，并用实际洪水过程进行了试报，表明了此法的可行性。

Mode unit hydrograph is composed of unit hydrograph and the factors influencing its flow concentration. After classifying the chosen historical floods,a mode unit hydrograph can be determinedwhen it is better fitting for the same characteristic floods.The method is simple and easily programmed be-cause of piecewise fitting the unit hydrograph.The forecasted results show that the method is feasible.