Study On Urban Road Stormwater System Based On LID Take The Seven Road Of Vocational Educational Park In Ganzhou As An Example

At present, China is in an important period of rapid development of the city, city construction scale and impervious area have increased by a large margin. As one of the main factors of city impervious surface, city road plays an important role in the process of city planning and construction. According to statistics, the proportion of Chinese city road in city construction land is 10%~15%,and in the part of cities,the proportion of that is even more than 30%~40%. At the same time, too much pressure of road drainage,serious pollution,waste of rainwater resources,the destruction of the ecological environment,urban waterlogging and other issues caused by the original pipe drainage model have become worse and worse,which is difficult to meet the urban construction and the demand for environment and ecology. In order to deal with the environmental problems mentioned above, the paper based on low impact development(Low Impact Development LID) concept makes a design for the urban road runoff management,at the source,by selecting the suitable LID technology.At the same time,the paper learns from overseas advanced management experience of the urban road runoff and constructs our country urban road rainwater system based on the concept of LID,which is suitable to the national conditions of our country.Ultimately,we hope to achieve the aim of reduction of the total amount of runoff and peak flow,and relieve the road runoff pollution,which can improve the ecological environment,and make an effective use of rainwater resource.The main research of the paper are as follows:(1) Through the analysis of the existing problems in the traditional road rainwater system, the paper introduces the importance and the necessity ofcity road rainwater system design based on the LID,and summarizes the current situation and development of the theory and application of the LID at home and abroad;(2) According to the problems of city waterlogging, water pollution and serious water resources waste in our country at present, the paper summarizes and analyzes the feasibility,practicability,and the design principles of city road rainwater system inour country based on the concept of the LID,and makes a comprehensive comparison of LID technology according to the characteristics of city road rainwater system of its own;(3)The paper makes a plane and vertical layout design for city road rainwater system,summarizes design methods,and accomplishes the case study of city road rainwater system design based on the concept of the LID;(4)The paper makes a design of green water system and effect analysis for Seven Road of Vocational Education Park in Ganzhou.