MIKE URBAN 城市洪水模拟_DHI

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1、UrbanFloodingusingModeling城市洪水模拟GunvorTychsenPhilipDHIChinaUrbanFloodingRiskEverywhere世界各地都面临城市雨洪风险Prague(CzechRepublic)DhakaCity(Bangladesh)WHYdowegetflooded?为何城市洪水频发？•Sewersystemsdevelopmentslowerthanthecitydevelopment管网发展速度与城市化进程脱节•Increasingpopulation

2、densityincitiesandincreasingimperviousness城市人口的增加和不透水地面的增加•Riverregulationcausingunforeseenproblemsinnearbycities周边城市河道调度所导致的不可预见问题•Changingweatherconditions气候变化•Cityexpansioninfloodhazardareas城市规划问题Etc.FLOODDAMAGES洪水造成的损失•Directdamages/直接损失•Indirectdamag

3、es/间接损失•Socialconsequences/社会问题FLOODS...Livingwithfloods–Challenges洪水带来的挑战•Acceptanceoffloodingincities,basedoninformeddecisions基于合理的决策，接受在城市中发生洪水•Cityplanning&laws城市规划和法规•Roadsaselementsinfloodmitigationstrategies道路作为城市洪水减少对策的基本元素Consciousactstodealwiths

4、ituationsofwateraboveground•Avoidcontactbetweenmixedwastewaterandstormwater避免污水和雨水的混合•Protectionofvitalinfrastructureelectricity-,water-,heat,communicationandhospitals保护重要的设施相关电力、水、热能的设施以及通讯和医院•Economicconsiderationofcommunitydamage社会损失的经济学评估•Necessarypre

5、parednesstodealwithextremeevents充足准备以应对极端情况Solutions解决方案•Enlargeandextendsewersystemandbuildretentionbasins扩大和扩充管网系统并建造蓄水设施•Realtimecontrolforoptimaluseofstoragecapacityinthesystem实时控制以优化系统的储水能力•Floodforecasting洪水预警Numericalmodellingisneeded!需要数学模拟辅助1Dsew

6、ernetworkmodelprinciples一维管网模型原理1D-1Ddrainagenetworkmodel1D-1D管网模型Dualdrainageconcept2DFloodModeling/二维洪水模拟1Dpipeflowand2Doverlandflow一维管流+二维地面漫流MIKEFLOODThestate-of-the-artforfloodmodelingMIKEURBANMIKE21MIKE11Collectionsystem&city管网和城市River&Estuary河口、江口R

7、iver&Floodplain流域洪水MIKEFLOOD1D-2Dcouplingprinciples/耦合原理MIKEFLOOD1D-2Dcouplingprinciples/耦合原理MIKEFLOODGetthebestofbothmodels综合两种模型的优点1Dadvantages/一维模型优点:2Dadvantages/二维模型优点:•Complexnetworksmodelling•Highresolution高精度复杂管网模拟•Adapteddataforriverorurban•Morer

8、ealisticapproachforfloodplainandurbansurfaceflowsnetworks适合于河道及管道更真实模拟城市地面流和淹水区域•Variousstructuresmodelling各种结构物模拟•Velocitymaps流速图•Highspeedcalculations运算速度快Reductionofdamage减少灾害•Reducetheextentoftheflooding减少洪水的范围•