摘要
Abstract
In order to meet the needs of water conservancy project planning,design and application,and ensure the accuracy of the design rainstorm and design flood results,the statistical parameters of rainstorm in Jiangsu Province are analyzed and studied on the basis of the results.Based on the rainstorm data from 522 stations from their establishment to 2022,the hydrological frequency analysis is carried out by selecting 8 durations of 10 min,30 min,60 min,3 h,6 h,12 h,24 h and 3 d.Firstly,data consistency processing is carried out in three methods:correction of minute/hour data and four-segment/hourly sliding data,and interpolation of missing data for the annual maximum 24-hour rainfall.Secondly,based on the discrete coefficient cumulative hydrograph and Morlet wavelet analysis,it is revealed that the selected rainstorm extreme value series has good representativeness.Finally,the mean and Cv values of individual stations in the province are obtained through Pearson Ⅲ curve fitting,and their variation patterns are analyzed in depth.关键词
暴雨参数/统计分析/均值/变化规律Key words
rainstorm parameters/statistical analysis/mean value/variation patterns分类
建筑与水利
