The Preliminary Research Of Stormwater Runoff Management Based On LID

In recent years, urban stormwater runoff problems are more and more concerned. Basically, most of the stormwater runoff, peak flow and runoff pollution are the result of the man-made hydrologic modifications that normally accompany development. The impacts of stormwater will increase with more development and urbanization. Otherwise, conventional practices fail to adequately treat for hydrologic modifications. At the same time, a more ecological stormwater runoff management strategy-low impact development (LID) becoming more and more popular. Learned from foreign advanced ideas and practice experiences, and in combination with the specific situation of the city development in china, this paper preliminarily discuss the role of low impact the development strategy in stormwater runoff management by case.First, this paper introduces the definition, characteristics, composition and function of low impacts development, and then detailed compare the differences among low impact development, conventional stormwater management strategies and the best management practices (BMPs). Secondly, the paper summarize the definition, basic structure of low impact development integrated management practices, as well as the demand for sitting, the key points of design, the main function, the advantages and disadvantages, and the application range of them. Finally, this paper concludes a stormwater runoff management framework and management procedures that based on the low impact development, and applied it to the Fuxi composite green way stormwater runoff management practice in Zigong.The results shows that the application of low impact development can alleviate a variety of problems that caused by development, and it’s good for maintaining the natural hydrological conditions, and important for the construction of healthy, safety, sustainable city.