基于MIKE FLOOD模型的城市洪涝灾害场景推演研究  

Study on Scenarion Deduction of Urban Flood Disaster Based on MIKE FLOOD Model

作　　者：查斌 刘成帅 杨帆 姚依晨[2] 马炳焱 胡彩虹 ZHA Bin;LIU Chengshuai;YANG Fan;YAO Yichen;MA Bingyan;HU Caihong(Luoyang Water Resources Surveying&Designing Co.,Ltd.,Luoyang 471000,China;School of Water Conservancy Science and Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]洛阳水利勘测设计有限责任公司,河南洛阳471000 [2]郑州大学水利科学与工程学院,河南郑州450001

出　　处：《人民黄河》2022年第11期53-58,65,共7页Yellow River

基　　金：国家自然科学基金重点项目(51739009);国家自然科学基金资助项目(51979250);河南省重点研发计划项目(202102310587)。

摘　　要：城市洪涝场景推演是城市防洪排涝工作的基础。以洛阳市中心城区为研究区域,综合考虑城市管网、内河、地形等复杂下垫面因素,构建基于MIKE FLOOD的一维河道-一维管网-二维地表耦合城市洪涝仿真模型,采用两场降雨调研积水深、河道实测流量对模型进行了校准检验,积水点模拟合格率达到了81.25%和93.75%,模拟流量过程的纳什系数在0.79~0.96之间。模拟分析了不同历时、不同重现期情景下的淹没过程。结果表明:设计暴雨重现期小于20 a时,暴雨所产生的淹没范围较小,多集中在建筑密集的中心城区;设计暴雨重现期大于20 a时,暴雨所产生的淹没范围明显增大;重现期小于10 a时,淹没面积随着重现期增大明显增大;重现期大于10 a时,淹没面积增长趋于平缓。Urban flood scenario deduction is the basis of urban flood control and drainage work.Taking Luoyang downtown area as the study area,comprehensively considering the urban pipeline network,inland rivers,terrain and other complex underlying surface factors,a 1D riv⁃er⁃1D pipe network⁃2D surface coupled urban flood simulation model based on MIKE FLOOD was constructed.The model was calibrated and tested by field rainfall investigations on the depth of the accumulated water and the measured flow of the river channel.The simulated qualifi⁃cation rate of the accumulated water point reached 81.25%and 93.75%,and the NSE of the simulated flow process was 0.79-0.96.It also simulated and analyzed the inundation process under different scenarios with different durations and different return periods.The results show that when the designed rainstorm return period is less than once in 20 years,the inundation area caused by the rainstorm is relatively small,mostly concentrated in the downtown area with dense building.When the design rainstorm return period is greater than once in 20 years,the inundation area caused by the rainstorm will increase significantly;when the return period is less than once in 10 years,the submerged area will increase significantly as the return period increases;the return period is greater than when it encounters once in 10 years,the growth of the submerged area tends to be flat.

关 键 词：城市雨洪 MIKE FLOOD 一维-二维模型耦合 淹没 洛阳市 

分 类 号：TV131.4[水利工程—水力学及河流动力学]