Research On Landscape Planning Of Urban Flood Storage And Detention Area Based On Hydrological Model

At present,the process of urbanization in China is becoming more and more rapid,but the basic flood control and drainage functions of cities are far from reaching the speed of urbanization.Urban flood storage and detention areas and urban wetland parks are regulating urban rainwater,absorbing surface runoff,and purifying sewage discharge.The aspect has a role that cannot be ignored.On the basis of consulting a large number of relevant documents and conducting field investigations,this article first summarizes and analyzes the relevant concepts and current research status of flood storage and detention areas,urban wetland parks,orage and detention wetlands,and hydrodynamic models.At the same time,it also refers to many domestic and foreign Related successful cases for reference.Secondly,the hydrodynamic model is used as the planning guide for the stagnant urban wetland.The hydrodynamic model chooses Denmark’s MIKE 21 as the model building software.The calculated submergence range,water depth conditions,velocity conditions and flow field conditions are used to construct the guidance city.Design strategies for the planning and construction of wetland parks;based on the calculation results obtained by MIKE 21 and consulting related materials and national construction standards,a series of guiding planning strategies suitable for stagnant wetlands are derived,including plants and waterfronts in wetland parks.Provide strong support and basis for space,revetment and slope protection,activity safety guidance,architectural planning,etc;secondly,combined with the planning and use functions of the wetland park,landscape requirements and the model results,the water body and plants of the urban stagnant wetland park are further improved.Biodiversit,building facilities,roads and paving and other aspects of planning strategies.Finally,choose Xiyuhe Urban Wetland Park as a practical case for planning.Based on the hydrodynamic model,based on the function of urban flood storage and detention area,a series of planning schemes are proposed for Xiyuhe Wetland Park to refine its ecology,landscape,and benefits.