多调查期洪水频率计算及参数估计公式推导

发布时间：2018-05-22 19:58

  本文选题：洪水频率 + 调查考证期　； 参考：《水文》2016年03期

【摘要】：基于实测极值流量系列进行水文频率分析时,为了提高系列的代表性及洪水估计的可靠性,常将历史洪水信息融合到实测系列构成不连续样本。考虑到目前给出的不连续样本经验频率计算方法多数是针对单个调查期,本文提出了适用于多个调查期不连续样本的经验频率计算方法,同时推导了均值(EX)和变差系数(Cv)的矩法计算公式,并将该方法应用于某水文站年洪峰系列的频率分析中。
[Abstract]:In order to improve the representativeness of the series and the reliability of flood estimation, historical flood information is often fused to the measured series to form discontinuous samples when the hydrological frequency analysis is based on the series of measured extreme discharge. Considering that most of the methods for calculating the empirical frequency of discontinuous samples are for a single investigation period, an empirical frequency calculation method suitable for discontinuous samples in multiple investigation periods is proposed in this paper. At the same time, the formula of moment method for calculating the mean value and variation coefficient is derived, and the method is applied to the frequency analysis of the annual Hong Feng series of a hydrologic station.
【作者单位】： 河海大学水文水资源学院;
【基金】：国家科技支撑计划课题(2013BAB06B01)
【分类号】：P333.2
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本文编号：1923405