摘要
以北京市某居民区为例,根据规划基础资料分析了研究区域的下垫面情况及雨水流程,设计了下凹式绿地、透水砖路面、调蓄池3种雨水利用措施的5种组合方案,通过Infoworks CS雨洪模型分别模拟计算重现期P=5,10,20 a的降雨事件下5种组合方案的洪峰、积水情况,对比模拟结果,分析3种雨水利用措施对雨洪控制的影响.计算结果表明：下凹式绿地流量峰值削减30.5%,径流系数控制在0.6左右,相对于平式绿地,雨洪控制效果较好;调蓄池具有最好的延迟洪峰效果,但对积水削减作用较小;3种措施组合可使该区域内涝标准由3 a一遇提高到5-10 a一遇.
Taking a residential district of Beijing as an example,we analyzed underlying surface and rainwater flow in the study area according to the planning basic data,then designed five combination schemes containing three kinds of rainwater utilization measures,such as sunken lawn,water-permeable brick pavement and storage pond,through Infoworks CS stormwater model,we simulated and calculated the flood peaks and waterlogging conditions under three rainfall events of recurrence interval P = 5 years,10 years,20 years. After comparing the simulated results,we analyzed the influences of three kinds of rainwater utilization measures on stormwater control. The results show that the peak flow of sunken lawn decreases 30. 5%,the runoff coefficient is controlled at about 0. 6,the effect of stormwater control of sunken lawn is better than that of flat green,the storage pond has best effect of delaying flood peaks,but has little effect on reducing waterlogging. The combination schemes of three kinds of measures increase the waterlogging standard from once in 3 years to once in 5 - 10 years.
出处
《华北水利水电大学学报（自然科学版）》
2015年第1期12-15,共4页
Journal of North China University of Water Resources and Electric Power：Natural Science Edition
关键词
雨水资源
雨水控制利用
城市雨洪
Infoworks
CS
雨水利用措施
rainwater resources
control and utilization of rainwater
urban stormwater
Infoworks CS
rainwater utilization measures
