摘要
台湾有将近80%的人口居住于城市地区,使得供水系统负荷增加、脆弱度提升,而城市化也导致径流量增加使得洪灾风险提高。拟整合供水、灾备用水和雨洪消减,并对雨洪滞蓄系统进行雨洪利用策略及容量分析研究。以台湾新北市秀峰国小为基地,规划雨水储留供水系统、渗透侧沟系统、生态池系统串联的雨洪滞蓄系统,建立多目标替代方案进行分析评估。采用绿色建筑设计方法结合合理化公式进行降雨径流演算。结果表明,在各替代方案下,系统需设置容量55～185 m3,径流量削减率为26.5%～100%、洪峰削减率为15%～100%、供水率为5%～7.5%、灾备用水天数则从3 d提升至19 d。所提出的规划方法可以较小的设置容量达到雨洪滞蓄多目标利用效果。
Around 80% of population in Taiwan has concentrated in urban areas, which increase loading in water supply, and weakens water supply systems. Rapid urbanization also increases runoff volumes and therefore intensifies the risk of flooding. For this, this study explored the hydraulic mechanism and volume analysis of the integrated rain- water retention-detention system for multi-purpose application, i. e. , water supply, emergency water supply, and flood mitigation. Using green building design method and rainfall-runoff modeling, a method for multi-purpose evalua- tion for option analysis was established. The rainwater harvesting systems, infiltration gutters and ecological pound of one primary school in New Taipei City were investigated as case study. Results show that using system volume from 55 to 185 m^3 the integrated system can achieve 26.5% -100% runoff volume and 15% -100% peak flow reduction with 5%-7.5% water supply rate and emergency water supply for 3 to 19 days. Therefore, the resulting plane can effectively reduce the size of tank volumes in the multi-purpose urban storm water retention and utilization.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2012年第3期341-345,共5页
Advances in Water Science
关键词
水资源
城市雨洪
防洪
雨洪滞蓄系统
water resources
urban storm water
flood control
rainwater detention-retention systems
