Rain Garden Application Based On Sponge City

Since the 20th century, the use of rainwater resources in developed countries considered to be the most effective method to solve the problem of water shortage in the city. Design and construction of rain gardens in the city, can be a lot of resources to collect rainwater, rainwater will be using these resources, can alleviate water shortages, and to cover groundwater, underground funnel in slow development. Rainwater resource utilization technology in developed countries is getting more mature, and utilization of rainwater resources in our country is still in the development stage.Author in this paper explores the possibilities of an initial rain gardens help sponge urban construction, in Shijiazhuang, capital of Hebei province, in the city study program of measures designed rain gardens, rain gardens study by roads, parks, building the three aspects design. After calculated by urban construction rain gardens can collect rainwater resource utilization. Taking Shijiazhuang City as an example of this article’s conclusion, it could be extended to other cities, other urban rain garden design, construction sponges city reference.Thesis is divided into six chapters, it can be summarized in four parts:Part one:Opening proposed urban waterlogging and water shortage in cities both large cities as a security background, leads to the city and rain gardens sponge two concepts, and described the importance and significance of both. For the following in-depth analysis of the relationship between rain gardens and sponges cities to do the groundwork.Part two:Further analysis of rain gardens and sponges cities, by studying the case at home and abroad, summed up the experience and lessons for later research papers provide a solid theoretical foundation. The paper analyzes the relationship between rain garden and cavernous city, rain gardens can be made as an important factor sponge urban construction this conclusion.Part three:a case study of Shijiazhuang city, Hebei province, to further demonstrate the feasibility and possibility of rain gardens help sponge urban construction. Urban garden design rainwater from three programs, and scientific data in support of the benefits of urban rain garden brought to instantiate analysis paper provides a solid foundation of practice.Part four:focuses on construction after rain gardens to improve the runoff, improving urban underlying surface, and calculate the amount of rainwater through rain gardens can be collected for covering the role of groundwater resources. Rainwater infiltration of groundwater recharge through the data show a significant effect, but due to the large amount of over-exploitation of groundwater, covering work takes a long time.Rain gardens and sponges city are inextricably linked, rain gardens as an important part of the sponge of the city, in city construction plays an important role. Rainwater Resources to bring significant economic, environmental and social benefits. Construction sponges city water can ease the contradiction, most cities meet the requirements for low water quality, reduce dependence on water resources; greatly reduce the pressure on urban flood control, disaster reduction, while also reducing investment in drainage facilities; construction of infiltration of rainwater harvesting facilities, rainwater infiltration to the ground, not only conserve groundwater, but also increase the water content of shallow soil, climate regulation, to curb urban heat island effect.