摘要
从我国低影响开发中容积法的内涵着手,指出容积法需实现径流总量和径流污染双重控制,并与美国的低影响开发、澳大利亚的水敏性城市设计中容积法的应用进行了比较,分析了其异同点。同时对我国低影响开发中容积法的径流系数取值、城市绿地径流控制以及年雨量径流系数与年径流总量控制率的关系等进行了探讨,最后通过实际案例试算表明,下垫面直接采用"1-年雨量径流系数"作为年径流总量控制率时,其径流污染削减率有可能不达标。
Focusing on the connotation of volumetric method in low impact development in China, it was pointed out that the volumetric method needed to achieve the dual control of runoff volume and run- off pollution, and it was compared with the application of volumetric method in low impact development in the United States and water sensitive urban design in Australia. At the same time, the value of runoff co- efficient of volumetric method, the control of urban green land runoff, and the relationship between annu- al rainfall runoff coefficient and volume capture ratio of annual rainfall in the low impact development of China were discussed. Finally, the actual case calculation showed that when the underlying surfaces di- rectly used the ＂1 - annual rainfall runoff coefficient＂ as the volume capture ratio of annual rainfall, the runoff pollution reduction rate might not reach the standard_
作者
苏定江
靳俊伟
刘亭役
SU Ding-jiang;JIN Jun-wei;LIU Ting-yi(Chongqing Municipal Research Institute of Design,Chongqing 400030,China;Sponge City Engineering Technology Research Center of Chongqing,Chongqing 400030,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第17期128-133,共6页
China Water & Wastewater
基金
重庆市社会民生创新专项(cstc2016shmszx30019)
关键词
低影响开发
容积法
年雨量径流系数
年径流总量控制率
low impact development
volumetric method
annual rainfall runoff coefficient
volume capture ratio of annual rainfall
