雨水资源利用和改善城市生态的意义
龙源期刊网 http://www.qikan.com.cn
雨水资源利用和改善城市生态的意义
作者:王长春
来源:《中国建筑科学》2015年第05期
摘 要:随着城市规模的不断扩大,不透水地面面积也随之增加,给城市的生态环境带来的负面影响逐渐显现出来。如果能够充分合理地利用天然降水补充地下水资源,就可有效地改善城市生态。一般可通过渗透等方式拦蓄部分雨水补充地下水、调节城市生态环境,多余的积水再通过城市排水系统安全、合理地排向下游,则可实现汛期减少城区洪量并且补充地下水资源的目的。本文着重介绍几种简便易行的雨水渗透设施和方法,并分析对改善城市生态环境的作用。
关键词:雨水资源;入渗;城市生态
Utilization of rainwater resource and improve the city's ecological significance
Wang Bao-chun
( Handan City College and the first North East Handan River Engineering Bureau, Hebei Handan 056001 )
Abstract: with the constant enlargement of the city, impervious surface area is increased, the ecological environment to the city brought negative effect gradually emerged. If making full use of natural rainfall recharge groundwater resources, can effectively improve the city's ecological. Generally available through the permeable, retain rainwater recharge groundwater, regulation of city ecological environment, excess water through the city drainage system safety, reasonable arrangement to the downstream, can achieve the reduction of urban flood in flood season and
replenish groundwater resources to. This paper mainly introduces several simple rainwater infiltration facility and method of analysis, and to improve the city's ecological environment effect. Key words: water resources; infiltration; city ecology
1.雨水利用的发展
1.1国外雨水资源的利用
随着城市化的发展和人们对水资源需求量的日益增加,城市雨水资源逐渐得到了人们的重视。20世纪60 年代,日本开始收集路面雨水,70 年代修筑集流面收集雨水,采用各种渗透设施截留雨水或收集利用,做了大量的研究和示范工程,并纳入了国家下水道推进计划,在政策和资金上给予支持。美国、前苏联、突尼斯、巴基斯坦、印度、澳大利亚等国对雨水积蓄也展