江苏省沿江排涝设计潮位和潮型研究

Study on tidal level and tidal pattern of along-river drainage design in Jiangsu

收集了江苏省沿江12个潮位站长系列资料,分析了江苏省沿江潮位特征,从沿江各代表站每年5~9月的实测潮位资料中,分别摘取连续四天的4个高低潮潮位,进行滑动统计,分别求出各代表站连续四天的高低潮潮位的平均值,并从中挑选出每年的最大值,将这些年的最大值分别组成各代表站的样本系列数据进行频率分析,用数理统计的方法确定了50%频率下排涝设计潮位。从历年的实测潮位资料中,选取高低潮位与50%频率设计潮位相同或接近过程,作为参照潮型,确定设计排涝潮型。

In this paper, long series of data by 12 tide stations along-river in Jiangsu are collected. Characteristics of tidal level along the river in Jiangsu Province are analyzed. Among the measured tide data from representative stations during May to September every year, four consecutive days of high and low tide level are picked to do slide statistics. The average tide level of each representative station in those four consecutive days is calculated, among which the maximum number of each year is picked. The maximum value of these years is composed for the representative sample series for frequency analysis. Mathematical statistics methods are used to determine the 50% frequency drainage design tide level. The high and low tide levels are selected from measured tide data in past years such that they are identical or similar to the 50% frequency design. The selected tide is used as reference to determine the design of drainage tide.