Construction Method And Planning Application Of Urban Stormwater Corridor

Due to the continuous expansion of urban areas and the worldwide impact of climate change,natural hydrological processes in cities have been profoundly changed,along with the nature of urban rainwater.Urban rainwater is no longer a resource,and deriving many kinds of urban problems.This study takes urban stormwater management as the main clue and tries to explore a new urban stormwater management path by various research methods.Firstly,taking advantage of CiteSpace to analysis urban stormwater management and its related knowledge groups,this paper examines the research background of it.Then a detailed conceptual analysis of the grey infrastructure and green infrastructure was conducted.At the same time,this research also introduces urban stormwater process and the development history of urban stormwater management at home and abroad.Two successful cases of urban stormwater management in the international community were selected for a depth study.A new urban stormwater management method--urban stormwater corridor,which based on a deep research of urban hydrological process was proposed.Using the least cost path model which based on ArcGIS to identify potential surface urban stormwater corridors by identification the urban surface hydrological conditions.The most suitable construction Site for stormwater corridors will be identify After a suitability evaluation.For the low suitability site,the gray rainwater infrastructure will be uitilise to ensure the connectivity of urban stormwater corridors.Multiple benefits will be achieve along with this new urban stormwater management Method.A empirical study will be carry out in qingshan sponge city demonstration area in wuhan city.The potential urban stormwater corridors in this area were successfully identified.A suitability analysis of the demonstration area was evaluated then.Finally,the possible obstacles and countermeasures for planning application of urban stormwater corridors are proposed.This paper also summarizes the shortcomings of this research and puts forward some suggestions for the future research about urban stormwater corridors.