城市道路低影响开发设计的雨洪滞蓄效果分析

Retention and Reduction of Rainwater on Urban Roads Based on Low Impact Development

为分析低影响开发(LID)措施对道路雨水径流的滞蓄效果,首先对一条基于LID设计的道路进行了雨水滞蓄减排效果模拟,然后通过改变机动车道路面做法、下凹绿地的深度和填料改良情况等,在道路原设计方案基础上另提出9种LID措施的设计情景,并利用模型评价了其滞蓄减排雨水径流的效果,最后综合对比了各种设计情景的效果,分析了影响雨水滞蓄减排效果的因素。研究结果可为实际工程中LID措施的合理设计提供参考。

The retention and reduction of rainwater on a road designed based on the low impact development （LID） concept were simulated and analyzed. Another nine LID design scenarios were given by changing the materials of road surface, the depth of concave green space and media porosity. Their effects on rainwater retention and reduction were evaluated using the model. A comprehensive comparison of the effects in various design scenarios was conducted, and the factors affecting rainwater retention and reduction were analyzed. The purpose is to provide reference for the rational design of LID measures in actual projects.