缺乏资料的小型流域洪水计算方法分析

Analysis on A Method of Flood Calculation in the Small Watershed without Data

采用面积比拟法、经验公式法、暴雨推求洪水法和神经网络法四种不同的方法对伐鱼河天然流域进行计算,比较成果后得出:面积比拟法、经验公式法和神经网络法在实际运用中从安全角度、理论严密性、可操作性和适用性四个角度综合下不如暴雨推求洪水法计算结果可靠,因此在今后的水文计算领域中河道洪水推求众多方法里,相对学术性的河道模拟来预测或延展序列方式来推求洪水的方法,使用暴雨推求洪水法进行洪水更实用缺乏基础资料的小型河流,同时此方法实用性、方便程度和可操作性也较高。

The article kept four different methods which are the area comparison method,the empirical formula method,the rainstorm flood method and the neural network method to calculate the natural catchment of Fyu River.After comparing the results,we found that the other three methods are not as reliable as the rainstorm flood method in practical in view of safety,theoretical tightness,operability and flexibility points.Therefore,in the future of hydrological calculation,the river channel flood calculation will be used in a variety of methods to determine the relatively academic watercourse.Simulating the method of predicting or extending the sequence to infer floods,using rainstorms to derive the flood method to conduct floods and to use smaller rivers that are practically devoid of basic data,and the method is also practical,convenient,and operable.