赣江峡江水库洪水分期研究  

Research on the Flood Season Staging in Xiajiang Reservoir of Ganjiang River

作　　者：刘章君 张静文 温天福 成静清 LIU Zhang-jun;ZHANG Jing-wen;WEN Tian-fu;CHENG Jing-qing(Jiangxi Academy of Water Science and Engineering,Nanchang 330029,Jiangxi Province,China;Jiangxi Provincial Key Laboratory of Water Resources and Environment of Poyang Lake,Nanchang 330029,Jiangxi Province,China;Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin,Nanchang 330029,Jiangxi Province,China)

机构地区：[1]江西省水利科学院,江西南昌330029 [2]江西省鄱阳湖水资源与环境重点实验室,江西南昌330029 [3]江西省鄱阳湖流域生态水利技术创新中心,江西南昌330029

出　　处：《中国农村水利水电》2023年第5期124-128,共5页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51909112);江西省主要学科学术和技术带头人培养计划青年人才项目(20212BCJ23016);江西省水利厅科技项目(202023ZDKT02)。

摘　　要：研究水库流域洪水分期特性,实现水库分期控制运用,对于在确保防洪安全的前提下提高综合利用效益具有重要意义。以赣江峡江水库为研究对象,基于代表性水文站(峡江水文站)1957-2017年逐日平均流量、年最大洪峰流量资料,采用成因分析法、水文特征值统计法和变点分析法研究洪水汛期分期规律,并进行对比分析。结果表明,赣江流域暴雨洪水主要集中在4-9月,4-6月份洪水由锋面雨形成,7-9月份洪水一般由台风雨形成。从成因分析上看赣江中下游流域洪水具有明显的季节性变化规律,可将4-6月作为主汛期,7-9月作为后汛期。水文特征值统计法和变点分析法这两类定量分析方法分期结果基本一致,汛期分期结果较为合理和稳健,峡江水文站的大洪水主要集中在5月和6月,频率分别为24.59%和39.34%,7月的前半月(7月1日-7月15日)出现较大量级洪水的概率仍然较大,可将4月初-7月上中旬作为主汛期,7月中下旬-9月底作为后汛期。结合多种途径分析结果,从偏安全的角度,同时考虑管理方便和习惯,拟定峡江水库主汛期为4月1日-7月15日,后汛期为7月16日-9月30日。在划分的主汛期内年最大洪峰被内包,洪水发生次数最为频繁,而后汛期洪水次数、量级相对较小。研究成果可为赣江峡江水库分期防洪调度和洪水管理提供技术支撑。It is of great significance to study the flood stage characteristics of reservoir basin and realize the reservoir stage control operation to improve the comprehensive utilization benefit on the premise of ensuring flood control safety.Taking the Xiajiang Reservoir located at Gan⁃jiang River as the research object,this paper studies the flood staging law by using the genetic analysis method,hydrological characteristic value statistical method and change point analysis method,and a comparative analysis is conducted based on the data of daily average dis⁃charge and annual maximum flood peak discharge from 1957 to 2017 of the representative hydrological station(Xiajiang Hydrological Sta⁃tion).The results show that the rainstorm and flood in the Ganjiang River basin are mainly concentrated between April and September,where the flood between April and June is formed by the frontal rain,and the flood between July and September is generally formed by the typhoon storm.The flood in the middle and lower reaches of the Ganjiang River has obvious seasonal variation,and can be regarded as the main flood season from April to June,and the post-flood season from July to September.The staging results of hydrological characteristic value statisti⁃cal method and change point analysis method are basically consistent,and the staging results of flood season are reasonable and robust.The major floods in Xiajiang Hydrological Station are mainly concentrated in May and June,with frequencies of 24.59%and 39.34%,respective⁃ly.The probability of large magnitude floods in the first half of July(from July 1 to July 15)is still relatively large.The main flood season is considered from early April to early July,and as the post-flood season from mid-late July to late September.According to the analytic results of various approaches,the main flood season of Xiajiang Reservoir is from April 1 to July 15,and the post-flood season is from July 16 to September 30,from the perspective of partial safety and considering the convenience of mana

关 键 词：汛期分期 成因分析 水文特征值 变点分析 峡江水库 

分 类 号：TV122[水利工程—水文学及水资源]