Study On The Design Of Urban Road Green Space In Hangzhou Based On Stormwater Management

The urban road is the economic line of urban development,and city?s expansion is always accompanied by roads? expansion.With the development of urbanization in China,roads become more and more important than before.At the meantime,more and more natural surface are replaced by impermeable roads,urban water accumulation has put big pressure on city drainage system.In this case,urban road green space,the basic configuration of urban road,has started one new functio n of stormwater management.In order to find a better mode to achieve urban road green space?s new function of stormwater management,this paper decide to take Hangzhou as an example and to do some further research based on LID.And provide some references for other cities in the subtropical monsoon climate that have similar climatic features to Hangzhou.Consulting relevant literature,this study summarizes the theory of urban rain flood management experience at home and abroad,and select the classic cases at home and abroad to analyzes its practical experience and lessons.Then summarize the relevant experience of urban rain flood management and provides reference for future application.The main research object of this study is the urban road green space of Hangzhou,the research area is the main urban area of Hangzhou.Through relevant literature analysis,Hangzhou city road is classified as traffic landscape and comprehensive three types.The paper selects 10 typical urban roads in the main urban area o f Hangzhou and analyzes the current situation of plant irrigation system from the current situation of plant irrigation system,the selection of plant species and the soil soil quality of the road green space.The research shows that although the road greenbelt of some parts of Hangzhou city has a new management mode of the new type of sponge seepage and rainwater flood,the main existing management mode of rain flood in Hangzhou is still dominated by the municipal express mode.Moreover,this kind of rain flood management mode can not completely satisfy the drainage needs of Hangzhou.At the same time,there are abundant green space resources in Hangzhou city road,which has the foundation to realize the management function of rain flood.Based on the actual research results,the suitability of LID related measures in urban road green space in Hangzhou is analyzed.This part mainly includes the detailed introduction of the types of LID technology measures,the selection of specific roads in hangzhou to carry out ecological reconstruction and analyze its expected effect.Based on the above research results,we summarized the guidelines for the urban road greenbelt in Hangzhou.Finally,it is concluded that Hangzhou urban road green space mainly through the following five points to realize the new function of rain flood management:(1)Increase rainwater catchment area;(2)Increase the ability of soil removal and infiltration;(3)Selecte the suitable water-resistant,moisture resistant and anti-sterile plants;(4)Set up appropriate drainage facilities for rainwater;(5)Realize the recovery and reuse of rainwater.