基于水文水动力耦合模型的山区小流域洪水预报  

Flood Forecasting of Small Watershed in Mountainous Area Based on Hydrological-Hydrodynamic Coupling Model

作　　者：蒋卫威 鱼京善[1] 赤穗良辅 陈基培 姜淇 李卢祎 JIANG Weiwei;YU Jingshan;AKOH Ryosuke;CHEN Jipei;JIANG Qi;LI Luyi(College of Water Sciences,Digital Watershed Laboratory,Beijing Normal University,Beijing 100875,China;Graduate School of Environmental and Life Science,Okayama University,Okayama 700-8530,Japan)

机构地区：[1]北京师范大学水科学研究院,数字流域实验室,北京100875 [2]冈山大学环境与生命科学研究所,日本冈山700-8530

出　　处：《水文》2020年第5期28-35,共8页Journal of China Hydrology

基　　金：“十三五”国家重点研发计划项目(2016YFC0401308);国家自然科学基金面上项目(51779007,41671018)。

摘　　要：开展无资料地区洪水模拟研究具有重要意义。针对于无资料地区洪水预报的挑战性,以我国东南沿海典型山区小流域—梅溪流域为例,构建了山区水文-城区水动力耦合模型。山区水文模型经河道计算流量率定后,模拟了2016年“莫兰蒂”台风场景下的城区洪水淹没过程。结果表明,模拟最大淹没水深结果与城区17处洪水淹没痕迹吻合较好,验证了耦合模型的适用性。分析了“莫兰蒂”台风场景下重点区域的淹没水深与历时。此外,根据不同重现期的设计降雨,分析了城区淹没水深与淹没范围。同时,重现期越大,城中心区域洪水滞后时间越短。It is of great significance to carry out flood simulation research in ungauged areas.Taking Meixi watershed,a typical mountainous watershed in southeast of China,as an example,the hydrological-hydrodynamic coupling model was constructed.After validating the hydrological model with the measured discharge at the outlet of the mountain area,the flood inundation process in the urban area of typhoon Molandi in 2016 was simulated.The results show that the simulated maximum inundation depth agrees well with the validated values of 17 flood traces in the urban area.The inundation depth and elapse time of the key points under typhoon Molandi scenario were analyzed.In addition,according to the design rainfall in different recurrence periods,the inundation depth and the inundation range of urban area were analyzed.At the same time,the larger the recurrence period,the longer lag time of flood in the central area.

关 键 词：水文水动力耦合 莫兰蒂台风 山区小流域 洪水预报 BTOPMC模型 

分 类 号：P333[天文地球—水文科学] TV124[水利工程—水文学及水资源]