水利学报2017，Vol.48Issue(12)：1490-1498,9.DOI:10.13243/j.cnki.slxb.20170616
关于海绵城市两种降雨控制模式的讨论
Discussion about the two rainfall control approaches in Sponge City Construction
摘要
Abstract
"China Sponge City Construction Guide" (2014) uses rainfall volume capture ratio as runoff volume capture ratio to determine the designed rainfall,which is debatable because they're not equivalent.Rainfall need be converted to runoff before estimating runoff volume capture ratio.US EPA uses rainfall event capture ratio to determine the designed rainfall and it's equivalent to runoff event capture ratio.This paper compared two different methodologies with rainfall volume capture ratio and rainfall event capture ratio,and discussed which one is best suitable for Sponge City based on its goals.It discussed the concepts of these two methodologies,then compared them using Beijing,Wuhan and Guangzhou as examples.The designed rainfalls based on these two methodologies have certain correlation,but they're not same and their concepts are different.The designed rainfall based on volume capture ratio is always higher than the one based on event capture ratio.The study found the optimized ratios,or the break-even point of capture ratio,are very close based on both methodologies.In conclusion,the runoff volume capture ratio represents the capture ratio of long-term annual runoff,hence is suitable for runoff utilization.But the runoff event capture ratio represents the capture capability of each rainfall event,hence is suitable for runoff pollution control.关键词
低影响开发/降雨总量控制率/降雨场次控制率/雨水利用/径流污染Key words
low impact development/volume capture ratioof annual rainfall/event capture ratio of annual rainfall/utilization of rainfall/runoff pollution分类
天文与地球科学引用本文复制引用
王家彪,赵建世,沈子寅,王浩,雷晓辉..关于海绵城市两种降雨控制模式的讨论[J].水利学报,2017,48(12):1490-1498,9.基金项目
国家重点研发计划(2017YFC0404403,2016YFC0401302) （2017YFC0404403,2016YFC0401302）
国家自然科学基金项目(51709273) （51709273）
