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降雨控制模式对海绵城市设计参数的影响--以江苏省为例 被引量:2

Influence of rainfall control method on the design of sponge city construction:A case study of Jiangsu Province
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摘要 为了研究降雨控制模式对低影响开发系统设计参数的影响,以江苏省为例,利用全省70个国家气象站、1961-2019年的降水资料开展分析。结果表明:在相同的控制率之下,降雨总量控制模式的日设计雨量大于降雨场次控制模式的日设计雨量,在暴雨占比较高的地区更加明显,且两种控制模式的日设计雨量差值随着控制率的增大而增加;两种控制模式的日设计雨量有一定的比例关系,85%降雨总量控制率和90%降雨场次控制率的日设计雨量比值为1.08;初期雨量控制率的空间分布形态差异较大,降雨总量控制模式下的控制率由南向北逐渐减小,分布规律明显,降雨场次控制模式的控制率分布比较复杂;强降水的比例越大,两种控制模式之间的设计雨量、初期雨量控制率、最优控制率、最优设计雨量的差异越大。 To study the influence of different rainfall control methods on the design parameters of the low impact development(LID)system,a case study of Jiangsu Province was carried out.The precipitation data of 70 national meteorological stations from 1961 to 2019 are used for the analysis.The results show that under the same control rate,the designed daily rainfall depth under the mode of volume capture ratio of annual rainfall is greater than that under the mode of event capture ratio of annual rainfall,which is more so in areas with more heavy rains.Moreover the difference increases with the increase of the control rate.Also,the designed rainfall depth of the two rainfall control methods are proportional.The ratio of designed rainfall depth corresponding to 85%volume capture ratio of annual rainfall and that corresponding to 90%event capture ratio of annual rainfall is 1.08.However,the spatial distribution of the initial rainfall control rate of the two rainfall control methods is quite different.The initial rainfall control rate of volume capture ratio of annual rainfall decreases from south to north,with an obvious distribution pattern,whereas that of event capture ratio of annual rainfall is more complicated.The higher the proportion of heavy precipitation,the greater the differences between the two rainfall control methods in aspects of designed rainfall depth,initial rainfall control rate,optimal control rate and optimal designed rainfall.
作者 陈燕 许遐祯 孙佳丽 苗茜 王国庆 CHEN Yan;XU Xiazhen;SUN Jiali;MIAO Qian;WANG Guoqing(Jiangsu Provincial Climate Center,Nanjing 210008,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Research Center of Climate Change,Ministry of Water Resources,Nanjing 210029,China;Yangtze Institute for Conservation and Development,Nanjing 210098,China)
出处 《水资源与水工程学报》 CSCD 北大核心 2021年第4期15-23,共9页 Journal of Water Resources and Water Engineering
基金 国家重点研发计划课题(2017YFA0605002、2017YFC1502701) 国家自然科学基金项目(51779144) 中国气象局气候变化专项(CCSF201932)。
关键词 低影响开发 设计雨量 初期雨量 最优控制率 海绵城市 江苏省 low impact development(LID) designed rainfall depth initial rainfall optimal control rate sponge city Jiangshu Province
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