QGIS和HEC-RAS在二维溃坝洪水模拟中的联合应用研究  

Application of QGIS and HEC-RAS in Two-dimensional Dam Break Flood Simulation

作　　者：徐云乾[1,2,3] 袁明道 史永胜[1,2,3] 张旭辉 潘展钊[1,2,3] 马妍博 XU Yunqian;YUAN Mingdao;SHI Yongsheng;ZHANG Xuhui;PAN Zhandao;MA Yanbo(Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,Guangdong,China;Guangdong Research Center of Mountain Torrent Disaster Control Engineering Technology,Guangzhou 510635,Guangdong,China;Guangdong Hydrodynamics Application Research Key Laboratory,Guangzhou 510635,Guangdong,China)

机构地区：[1]广东省水利水电科学研究院,广东广州510635 [2]广东省大坝安全技术管理中心,广东广州510635 [3]广东省水动力学应用研究重点实验室,广东广州510635

出　　处：《水力发电》2021年第4期108-111,126,共5页Water Power

基　　金：水利部水利技术示范项目(SF-201910)。

摘　　要：为了准确模拟大坝溃决后的洪水演进过程及淹没范围分析,以数字高程地图为基础,建立了HEC-GeoRAS模型;结合水库的漫顶溃决工况,模拟阳江市大河水库主坝和副坝溃决后洪水沿下游河道的演进过程,并联合QGIS生成洪水风险图、最大水流流速,最大水面高度等成果。研究成果对山区河流下游的人员疏散转移避险决策具有重要的参考意义。In order to accurately simulate the evolution process and inundation range of dam break flood,the HEC-GeoRAS model is established based on the digital elevation map,and combined with the overtopping condition of reservoir,the flood evolution process along the downstream channel after the main dam and auxiliary dam break of Dahe Reservoir in Yangjiang City is simulated.The flood risk map,maximum flow velocity and maximum water surface height are generated by combining with QGIS.The research results have important reference significance for the decision-making of people evacuation in the lower reaches of mountain rivers.

关 键 词：QGIS HEC-RAS 二维模型 溃坝洪水 模拟 

分 类 号：TV133.2[水利工程—水力学及河流动力学]