LID理念在市政道路排水设计中的应用

Research on the Application of LID in Optimizing Municipal Road Drainage Design

针对传统市政道路排水设计存在的问题,结合国内外城市雨水管理研究进展进行分析,提出应用LID理念优化市政道路排水工程设计技术路线。以宣城市凌阳路排水工程设计为例,统筹布局LID设施,保证雨水自然积存、自然渗透、自然净化。结果显示,引进LID理念建设城市生态排水系统,既降低了外排径流量、削弱了热岛效应,又防控了洪涝灾害、控制了面源污染,还能综合利用雨水资源、涵养地下水源、改善生态环境,为类似工程设计提供借鉴。

In view of the problems existing in the traditional municipal road drainage designs,this paper analyzes global research progress of urban rainwater management and proposes to optimize the design principles of municipal road drainage engineering by applying the Low Impact Development(LID)concept.The paper takes the design of Linyang road drainage project in Xuancheng City as an example,allocating the LID facilities to ensure the natural accumulation,infiltration and purification of rainwater.The results show that the introduction of LID in the construction of urban ecological drainage system not only reduced the drainage outage and weakened the heat island effect,but also controlled and prevented the flood and the surface-source pollution.LID also utilized rainwater resources in multiple ways to conserve underground water sources and improve the ecological environment.