基于HAND的流域洪水淹没快速分析技术  

HAND-based Rapid Analysis Technology for Watershed Flood Inundation

作　　者：王述强 吕凯 刘祥林 师鹏飞[2,3,4] 肖家清 郝晓博 WANG Shuqiang;LV Kai;LIU Xianglin;SHI Pengfei;XIAO Jiaqing;HAO Xiaobo(Xinjiang Raohe Hydrological and Water Resources Monitoring Center,Shangrao 334000,China;The National Key Laboratory of Water Disaster Prevention,Hohai University,Nanjing 210098,China;Yangtze Institute for Conservation and Development,Hohai University,Nanjing 210098,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Beijing Jinshui Information Technology Development Co.,Ltd.,Beijing 100000,China;FuJian Provincial Investigation,Design&Research Institute of Water Conservancy&Hydropower Co.,Ltd.,Fuzhou 350001,China)

机构地区：[1]信江饶河水文水资源监测中心,江西上饶334000 [2]水灾害防御全国重点实验室,河海大学,江苏南京210098 [3]长江保护与绿色发展研究院,江苏南京210098 [4]河海大学水文水资源学院,江苏南京210098 [5]北京金水信息技术发展有限公司,北京100000 [6]福建省水利水电勘测设计研究院有限公司,福建福州350001

出　　处：《水文》2024年第2期57-65,共9页Journal of China Hydrology

基　　金：国家自然科学基金面上项目(52279009);中央高校基本科研业务费项目(B220201010)。

摘　　要：快速分析计算流域洪水淹没,对于防洪具有重要作用,而基于水动力学模型的经典淹没算法在时效性方面存在不足,制约防洪“四预”功能实现和数字孪生流域建设。针对此,本文建立了基于HAND(Height Above Nearest Drainage)的形态淹没模型,用于快速分析流域洪水淹没情况,在乐安河流域上游进行了应用验证。结果表明,模型可在5秒内完成洪水淹没计算,对四场历史洪水和三场设计洪水淹没范围的总体模拟精度平均为0.95,达到水动力学模型的模拟精度;对淹没水深的模拟存在较大误差,平均误差为0.79 m。基于HAND的形态淹没模型可快速绘制全流域洪水淹没范围图,大幅提升影响预报和防洪预演的时效性水平。Rapid analysis and calculation of flood inundation plays an important role in flood controlling.However,the classical hydrodynamic-based flood inundation mapping algorithms need high computational expense,hindering the realization of“Four-Pres”for flood control and construction of digital twin basins.Toward this end,this paper presents a morphological inundation model based on the height above nearest drainage(HAND)method to immediately analyze the flood inundation extent,which is demonstrated in the upstream of Le’an river basin.The findings indicate that the flood inundation mapping by HAND could be accomplished within 5 seconds with the overall accuracy for inundation extent reaching 0.95,which equals to the simulation accuracy by HEC-RAS.On the other hand,the model does not perform well in simulating water level in terms of that the average error is 0.79m.The HAND-based morphological inundation model enables rapid flood inundation mapping over basins with diverse scales,facilitating the speed and efficiency of influence-based forecasting and scenarios-based rehearsal for flood control.

关 键 词：HAND 形态淹没模型 洪水淹没分析 HEC-RAS模型 

分 类 号：TV122[水利工程—水文学及水资源] P33[天文地球—水文科学]