西安市城市雨水利用方式探讨

Discussion on urban rainwater utilization in Xi'an

介绍了一些国家和地区城市雨水利用的研究现状。西安市是一个水资源匮乏的城市,但却有丰富的雨水资源,对适合于西安市的雨水利用方式进行了探讨。经分析讨论认为,这3种模式在西安市的城市雨水利用中都具有很强的实用性,即:利用城市屋面雨水减少自来水的需求,道路广场雨水补给地下水资源,下凹式草地降低城市雨洪灾害。

The research actuality on urban rainwater utilization in some countries and regions was introduced.In view of the characters of shortage of water resources but the rainwater resources was relative rich in Xi＇an,the suitable ways for rainwater utilization in Xi＇an were discussed.According to analysis,the three modes of urban rainwater utilization are practcable in Xi＇an,they are： making use of roof rainwater reduce tap water needs;compensates groundwater resources rainwater on road and square,and low elevation green belt reduces urban rainfall flood disaster.