2020年汛期长江中下游河道洪水过程及特性分析  

Analysis of the flood process and characteristics in the middle and lower reaches of the Yangtze River during the 2020 flood season

作　　者：姚仕明[1] 郭小虎[1] 陈栋[1] 刘心愿[1] YAO Shiming;GUO Xiaohu;CHEN Dong;LIU Xinyuan(Key Laboratory of River and Lake Regulation and Flood Control,Ministry of Water Resources,Changjiang River Scientific Research Institute,Wuhan 430010)

机构地区：[1]长江科学院水利部江湖治理与防洪重点实验室,武汉430010

出　　处：《中国防汛抗旱》2021年第2期5-10,共6页China Flood & Drought Management

基　　金：科技部重点研发专项(2016YFC0402310);湖南省重大水利科技项目(湘水科计〔2017〕230-16);中央级公益性科研院所基本科研业务费项目(CKSF2019525/HL)。

摘　　要：受厄尔尼诺现象影响,2020年长江流域出现了历时长、范围广的强降雨过程,7月3日至8月17日,长江流域共发生5次编号洪水,长江中下游河道洪水过程及特性变化直接关系到长江流域的防洪安全。基于此,根据最新实测资料分析了2020年汛期长江中下游河道洪水过程及特性,并初步研究了三峡水库削峰对长江中下游防洪的影响,取得了一些新的认识,可为长江中下游江湖防洪的进一步深入研究提供基础和参考依据。Affected by the El Nino phenomenon,a long-duration and wide-ranging process of heavy rainfall oc⁃curred in the Yangtze River Basin in 2020.From July 3 to August 17,a total of 5 numbered floods occurred in the Yangtze River Basin.The flood process and characteristic change in the middle and lower reaches of the Yangtze River are directly related to the flood prevention safety of the Yangtze River Basin.According to the latest mea⁃sured data,the flood process and characteristics of the middle and lower reaches of the Yangtze River during the 2020 flood season are analyzed,and the impact of the peak reduction of the Three Gorges Reservoir on the flood prevention of the middle and lower reaches of the Yangtze River has been preliminarily studied,and some new pre⁃liminary understandings have been obtained,which provides a basis and reference for further study of flood pre⁃vention in the middle and lower reaches of the Yangtze River.

关 键 词：三峡工程 长江中下游 洪水过程 

分 类 号：TV147[水利工程—水力学及河流动力学]