Stormwater Management System Research In Old City Renewal

The speedy urbanization of China has changed the natural rain cycle.Under the trend of urban harding,many cities are confronted with the problem of waterlogging,rainwater runoff pollution and water storage.Especially the old city with aging public facilities,not only has the problem of drainage system behind the urban development,but also faces the situation of shortage of land,urban high density of construction,and these brought the difficulties on the transformation.For the status of the old city,simply rely on engineering infrastructure approach for stormwater management needed to be transformed.Based on the current situation of the old urban area and the common problems in the stormwater management system,this paper puts forward the stormwater management system design method focus on different types of the old urban area.Aim at through the combination of the gray infrastructures and the green infrastructures,during the process of urban renewal,alleviate the problems of stormwater in old urban areas and create a sustainable human settlements environment.This thesis will first sorted the development process of stormwater management system at home and abroad.On this basis,find out the design objectives and principles of rainwater management.The main body of this thesis discusses the design methods of the stormwater management system in the old city,such as the retention,infiltration,transmission,purification,storage and utilization of rainwater runoff.Classify the main types of land use like road system,square space,old residential area and public green space,attempt to proposed suitable transformation methods.In this part,the thesis firstly put forward the problem of stormwater in various land use types.According to the problems that need to be paid attention to,the stormwater type infrastructure transformation strategy according to local conditions is put forward.In the end of this thesis,analyzes the successful cases of stormwater management system design in the old urban areas at home and abroad.Through the detailed practice process,summarize the experience and make up the insufficiency,draw lessons from the combination of design and practice.Based on the analysis of the theory of the stormwater management system,this thesis has obtained the model of the stormwater management system construction in the old city,and provided the reference model for the relevant research of the stormwater management system reconstruction of the old city.