暴雨重现期估算方法的探讨

暴雨重现期的估算，是依据历史洪水顺位或重现期，做该流域内均匀雨量点不考虑重现期的点雨量理论频率计算，求出各雨量点的均值及ＣＶ值和流域平均值，以流域暴雨均值除暴雨量，即得各雨量点暴雨的Ｋ值，利用数值逼近法，反求该Ｋ值的重现期，将各点的重现期加权平均直至逼近与同次洪水重现期为止，暴雨中心点雨量的重现期即为所求的暴雨重现期。文中并以实例加以说明。

Approaching calculation method of storm rainfall return period

To estimate storm rainfall return period, based on historical flood cis-position or return period in a basin, the theoretical probability of each point rainfall is calculated first without consideration of return period for the uniform rainfall site. Then its mean and Cv as well as the average of storm rainfall in this basin are calculated. The average divided by every point rainfall is K of rainstorm in rainfall sites. And the return period of K is reverse calculated by digital approximation. Finally weighted average of the return period of rainstorm in rainfall sites is made, until approaching return period of same flood. The return period of the point rainfall in the rainstorm center is demanded one of this rainstorm. The paper expounds through some examples .