摘要
国家海绵城市试点已进入验收阶段,径流总量控制率是建设效果评估的关键指标之一。海绵城市建设技术指南中给出了径流总量控制率的计算方法,但它是通过长序列(一般30年以上)降雨数据排序计算得到的,是反映了长期降雨规律的一个综合平均值。海绵城市考核的年份往往对应具体的水文年型,用统一的综合平均值去考核具体的水文年型,在丰水年标准偏严,在枯水年偏松,不能客观反映海绵城市的建设效果。本文定量分析了海绵城市径流总量控制率的年际变化特性和概率分布特征,基于海绵城市建设技术指南核算了特定年份径流总量控制率的客观指标,可为海绵城市建设效果的考核提供参考依据。
The national sponge city pilot has entered the stage completion,and the volume capture ratio of annual rainfall(VCRAR)is one of the key indicators for the evaluation of construction effect.The calcula tion method of VCRAR is given in the technical guide of sponge city construction,which is obtained by sorting the rainfall data in long time series(generally more than 30 years),so it is a comprehensive aver age value reflecting the long-term rainfall pattern.In the year of assessment,it usually has a specific rain fall pattern.If the unified comprehensive average value(refer to VCRAR)is used to check the specific hy drological year type,the standard is too strict for the year with abundant rainfall,and too loose for the year with scarce rainfall,which could not objectively reflect the construction effect of sponge city.In this paper,the annual variation characteristics and probability distribution characteristics of the rainfall in specif ic year are quantitatively analyzed.Based on the technical guide of sponge city construction issued by min istry of housing and urban-rural development,the objective indexes of VCRAR were calculated by using the rainfall datasets of the assessment year,which could provide scientific supports to evaluate the construc tion effect of sponge city.
作者
刘家宏
丁相毅
邵薇薇
杨志勇
梅超
LIU Jiahong;DING Xiangyi;SHAO Weiwei;YANG Zhiyong;MEI Chao(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China of Institute of Water Resources and Hydropower Research,Beijing 100038,China;Engineering and Technology Research Center for Water resources and Hydroecology of the Ministry of Water Resources,Beijing 100038,China)
出处
《水利学报》
EI
CSCD
北大核心
2019年第9期1072-1077,共6页
Journal of Hydraulic Engineering
基金
国家自然科学基金项目(51739011,51522907)
国家重点研发计划课题(2016YFC0401401)
关键词
海绵城市
径流总量控制率
水文年型
效果评估
核算方法
sponge city
volume capture ratio of annual rainfall
hydrological year type
effect evaluation
accounting method
