Traditional roadway rainwater drain system is one reason of city waterlogs,but the infiltrative form technology for rainwater collection and use has the advantage as follows.

• 传统的路面雨水排放系统是城市涝灾的成因之一,而渗透式雨水收集利用技术具有抑制暴雨径流、延长汇流时间、减少路面积水等优点,对防灾减灾能起到重要作用。