东部季风区不同地貌类型试验流域洪水研究  

Study of floods in experimental watersheds of different geomorphic types in eastern monsoon region of China

作　　者：刘悦 张建云[1,2,3,4] 鲍振鑫 贺瑞敏[2,4] 刘翠善[2,4] 王国庆[2,3,4] LIU Yue;ZHANG Jianyun;BAO Zhenxin;HE Ruimin;LIU Cuishan;WANG Guoqing(College of Hydrology and Water Resource,Hohai University,Nanjing 210098;Research Center for Climate Change,Ministry of Water Resources,Nanjing 210029;Yangtze Institute for Conservation and Development,Nanjing 210098;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029)

机构地区：[1]河海大学水文水资源学院,南京210098 [2]水利部应对气候变化研究中心,南京210029 [3]长江保护与绿色发展研究院,南京210098 [4]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,南京210029

出　　处：《水力发电学报》2022年第3期22-31,共10页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(41830863,51879162);“十四五”国家重点研发计划项目(2021YFC3201100)。

摘　　要：基于位于中国东部季风区的安徽省城西(丘陵区)和黄山(山区)试验流域实测资料,分析了不同地貌类型条件下的场次洪水特性,同时利用基于地形的水文模型Topmodel对两个试验流域进行次洪模拟,探讨该模型在长江下游东部季风区的适用性。结果表明:在年尺度和场次尺度上黄山试验流域的径流系数均高于城西试验流域;对于同一天气过程,城西试验流域洪水的涨水历时大于黄山试验流域,而洪水历时受面积、坡度、土地利用和河网分布等多重因素影响具有不确定性;利用Topmodel进行次洪模拟的纳什效率系数(NSE)均值达0.77,各模拟时段的平均相对误差控制在14%以内,模型在山区的适用性高于丘陵区。Based on observed data from the experimental watersheds of Chengxi(a hilly area)and Huangshan(a mountainous area)both in Anhui Province in the eastern monsoon region of China,the characteristics of flood events in watersheds with different geomorphic types are analyzed.A topography-based hydrological model(Topmodel)has been used to simulate the floods events,and its applicability to different geomorphic areas is discussed.The results show the runoff coefficients of Huangshan watershed are larger than those of Chengxi watershed on both annual and event scales.For the same weather process,the start time of flood rising in Chengxi watershed lags behind in Huangshan watershed,while flood duration is uncertain due to its multiple influencing factors such as area,slope,land use,river network distribution,etc.The average values of Nash-Sutcliffe efficiency coefficients calculated for both watersheds reach 0.77,and the average relative error of different simulation periods can be controlled within 14%.The applicability of the Topmodel to mountainous areas is better than to hilly areas.

关 键 词：东部季风区 试验流域 径流系数 TOPMODEL 洪水模拟 

分 类 号：TV125[水利工程—水文学及水资源]