1959-2020年洞庭湖四水洪水情势变异特性及归因分析  

Variation features and attribution analysis of flood patterns in four rivers of Dongting Lake from 1959 to 2020

作　　者：陈柯兵 肖华 何奇锴 孙思瑞 CHEN Kebing;XIAO Hua;HE Qikai;SUN Sirui(Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China;College of Resources and Environment,Yangtze University,Wuhan 430100,China;Hubei Key Laboratory of Petroleum Geochemistry and Environment,Yangtze University,Wuhan 430100,China;Middle Changjiang River Bureau of Hydrology and Water Resources Survey,Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]长江水利委员会水文局,湖北武汉430010 [2]长江大学资源与环境学院,湖北武汉430100 [3]长江大学油气地球化学与环境湖北省重点实验室,湖北武汉430100 [4]长江水利委员会水文局长江中游水文水资源勘测局,湖北武汉430010

出　　处：《水利水电快报》2022年第12期16-20,共5页Express Water Resources & Hydropower Information

基　　金：江苏省水利科技项目(2020001);湖南省重大水利科技项目(XSKJ2019081-05)。

摘　　要：近几十年来,湖南四水(湘江、资水、沅江、澧水)的水文情势发生了显著改变,对湖区调洪与区域防洪产生了一定的影响。为深入认识四水洪水情势发生的复杂变化,采用水文变异诊断系统对近60 a(1959-2020年)来洞庭湖四水出口控制水文站点的年最大洪峰流量序列、年最高洪峰水位序列进行了变异特性及归因分析。结果表明:湘潭站洪峰、水位序列未发生变异;受降水突变式跃升的影响,桃江站洪峰流量、洪峰水位序列在1987年发生向上的跳跃变异;因站点断面的水位流量关系发生了变化,桃源站年最高洪峰水位序列在1989年发生向上的跳跃变异;因江垭、皂市水库联合调度的影响,石门水文站年最大洪峰流量序列在2003年发生向下的跳跃变异。In recent decades,the hydrological regime of the Xiangjiang River,the Zishui River,the Yuanjiang River and the Lishui River in Dongting Lake Basin has changed significantly,which has a certain impact on regional flood control and lake flood regulation.In order to understand the complex changes in the flood situation of the four rivers,this paper uses the hydrological variability diagnosis system to analyze the annual maximum peak flow sequence and the annual highest peak water level sequence of the hydrological stations at the outlet of the four rivers in the past 60 years(from 1959 to 2020)and its attribution.The result showed that there was no variation in the flood peak and water level sequence at Xiangtan Station;affected by the sudden change in precipitation,the flood peak flow and water level sequence at Taojiang Station experienced an upward jump variation in 1987;due to the change of the relationship between the water level and flow of the cross-section,the water level sequence of the highest annual flood peak at Taoyuan Station experienced an upward jump variation in 1989;due to the influence of the joint operation of Jiangya and Zaoshi Reservoirs,the annual peak flow sequence at Shimen Hydrological Station experienced a downward jump variation in 2003.

关 键 词：水文序列 年最大洪峰流量 年最高洪峰水位 变异分析 洞庭湖 

分 类 号：TV122[水利工程—水文学及水资源]