城市道路雨水利用

Collecting and Using Rainwater in City Roads

城市雨水利用可实现节水、水资源涵养与保护、控制城市水土流失和水涝、减少水污染和改善城市生态环境等目标。介绍一个城市道路雨水利用系统,主要利用草坪集雨进行灌溉或其它用途,属于间接利用雨水范畴。较其它水质来看,具有水质较好、污染物少、洁净度较高等优点。对于降雨量较小的地区,采取利用毛细水自然上升的方式来给草坪供给水份的方式。在整个设计过程中,分别从细砂的毛细水上升时间、储水系统的渗流速度、及计算机编程软件来论证设计的合理性与可行性。

The use of city rainwater can realize saving water, water resources self-control and protection, controlling city soil erosion, and the waterlogging, reducing water pollution and improving city ecological environment and so on. The system was given of using rainwater in the city, which was mainly referred to as the irrigation or other use of rain by lawn collection, characterized by the indirect use of rain water category. As compared with other water quality, this system＇s water had better water quality, water pollution became less, the purity was higher. In the smaller amount of rainfall area, the way was taken that the capillary water rose naturelly to give the lawn supplying moisture. In the whole process of designing, the time of the capillary water rising, the seepage velocity of the storing water system and the computer programming software were all used to demonstrate separately to have proved the rationality and the feasibility of the design.