Comparative Study of Different Design Flood Estimation Methods
Abstract: The design flood is the key problem in hydropower project designing and watershed planning. The design flood estimation methods, the most frequently-used distribution functions and parameter estimation methods were introduced. Four kinds of flood frequency analysis models were built for the comparative study. The results demonstrate that the design floods estimated by the P-III/CF model which is recommended by Chinese regulation are larger by 10% - 15% than other models. It is also shown that the representativeness of data series is significantly important. The historical flood information either can enhance or damage sample representativeness. The differences of results estimated by different models greatly have correlation with frequency distribution function, parameter estimation methods and curving-fitting guidelines. Taking the practical difficulties in flood designing into consideration, full at-tention should be paid to the reasonable analysis of basic data, the calculation process and the results.
文章引用: 徐长江 , 郭生练 , 尹家波 , 刘章君 (2016) 国内外设计洪水计算方法的比较研究。 水资源研究， 5， 127-135. doi: 10.12677/JWRR.2016.52016
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