摘要
为深入认识长江中下游枯水情势发生的复杂变化,采用水文变异诊断系统对宜昌、沙市、汉口、大通等重要控制站点的枯水位进行分月变异特性研究。结果表明:宜昌站枯水期发生中、强的变异;沙市站发生强、巨的变异,变异程度最强;汉口站发生纯随机(无变异)至强变异;大通站发生纯随机(无变异)至中变异;各站点10—11月均发生向下的变异,与2003年相比,2021年汛后宜昌、沙市、汉口站水位(流量)分别下降了0.76 m(6000 m^(3)/s)、2.82 m(7000 m^(3)/s)、1.66 m(1万m^(3)/s),大通站则未发生明显变化,其对航运的潜在影响需加强分析。
To deeply understand the complex changes of low water regime in the middle and lower reaches of the Yangtze River,the monthly variation characteristics of low water level at Yichang,Shashi,Hankou,Datong and other important control stations were studied by using the hydrological variation diagnosis system.The results show that the variation of Yichang station in dry season was moderate and strong.Strong and huge variation occurred in Shashi station,and the variation degree was the strongest.Pure random(no variation)to strong variation occurred in Hankou station;Pure random(no variation)to medium variation occurred in Datong station.Each station experienced downward variation from October to November.The water level(discharge)of Yichang,Shashi and Hankou stations decreased by 0.76 m(6000 m^(3)s),2.82 m(7000 m^(3)s)and 1.66 m(10,000 m^(3)s)respectively after the flood season in 2021 compared with 2003,However,there was no obvious changes at Datong station,and its potential impact on shipping should be further analyzed.
作者
雷雪婷
王辉
陈柯兵
单敏尔
李瀛
LEI Xueting;WANG Hui;CHEN Kebing;SHAN Min er;LI Ying(Changjiang Waterway Planning,Design and Research Institute,Wuhan 430040,China;Changjiang Waterway Bureau,Wuhan 430010,China;Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China)
出处
《水运工程》
2024年第6期148-153,共6页
Port & Waterway Engineering
基金
长江航道局科技项目(2022230001)。
关键词
长江中下游
水文序列
枯水位
变异分析
middle and lower reaches of Yangtze River
hydrological series
low water level
variation analysis
