Research on Calculation of the Possible Maximum Flood in the Coastal Plain Area
Due to the influence of factors such as spatial staggered of urban areas,connection of river and lake flood storage and detention areas,and dense concentration of water conservancy projects,there are limitations for estimation of the possible maximum flood(PMF)with the traditional methods,such as instantaneous unit hydrograph and empirical formula.To remedy the problem of applicability of traditional methods in plain river network area,this paper attempts to use the hydrodynamic flood evolution model.Considering the influence of different superimposed factors such as reservoir dam break,possible maximum rainfall(PMP)and ocean storm surge,typical areas(Xizou Mountain,Lianyungang City)is selected to study the flood evolution process in the plain river network area under various combined conditions and the maximum possible flood generated within a given area.It provides a reference for the deduction of the possible maximum flood level and engineering design in the plain river network area.
plain river networkprobable maximum floodhydrodynamic modelflood risk combination
NETL
NSTL
万方数据
维普
