基于SWMM的海绵城市防洪排涝效果评估-水利工程专业论文.docxVIP

基于Sw删的海绵城市防洪排涝效果评估 Based on SWMM sponge urban flood control and drainage effect evaluation Abs仃act With the advancement of our country urbanization，the urban impervious percentage increased dramatically,green area reducing，at the boaom of the urban river hardening．Hot climate warming，the city to the effect caused by the frequent extreme weather and sudden heavy rain．Rain，short confluence time，larger，peak time of the peak flow in advance．And most of the urban drainage pipe network in Our country old，hard to meet the requirements of urban development．On the other hand most of the city there is a shortage of water resources， long·term groundwater，resulting in a decline in groundwater level．In addressing the urban rainwater management，therefore，an urgent need to all advanced management concept rain． Sponge city management idea，as a kind of advanced rainwater resources is not only beneficial to solve the urban waterlogging disasters，storm runoff pollution，and can collect rainwater use and recharge of groundwater，etc．Is of great significance for China’S ecological civilization construction of city． This article first study compared the sponge city construction in China and the developed countries of rainwater resource management concept．Collect related information，from the existing drainage，drainage partition，rainstorm characteristics，historical analysis of the current situation of dandong city flood control and drainage waterlogging and Angle．On the basis of dandong city station drainage partition is chosen as the study area．Made a study of regional urban transformation，sponge target，planning period，sponge urban renovation technology route．According to the research area of the underlying surface analysis，from the permeability function is given priority to，stored，combination way has three different kinds of sponge the urban reform scheme．Collection point in front of the drainage pipe network，DEM figure of water area，the land use data，and through the spatial analysis func