本研究通过分析南昌市青山湖片区雨洪特点,利用SWMM(storm water management model)建立了南昌市青山湖片区雨洪管理模型.利用芝加哥雨型及其合成方法,设计了0.5、1、2、5、10 a五种不同重现期下的降雨情景.根据青山湖最高水位、最低水位以及常水位,设计了排放口完全淹没、自由出流以及半淹没状态3种状态情景.当重现期为0.5、1 a时,青山湖所需控制水位分别为17.77、17.67 m,均高于常水位17.50m,满足要求;但当重现期为2、5、10 a时,青山湖所需控制水位分别为17.47、17.33、17.20m,均低于常水位17.50m,此时需通过青山湖电排站进行调节,以免发生内涝.%This study analyzed the characteristics of rainwater in Qingshan Lake area of Nanchang.And the rainwater management model of Qingshan Lake area in Nanchang was established by SWMM.Based on the rain pattern of Chicago and its synthetic method,five rainfall scenarios of 0.5,1,2,5,10 a under different reproduction periods were designed.According to the highest water level,the lowest water level and the constant water level of Qingshan Lake,three kinds of state scenarios such as complete submerged discharge,free flow and semi submerged state were designed.When the reproduction period was 0.5 a and 1 a,the water level required for Qingshan Lake was 17.77 m and 17.67 m respectively,which was higher than the normal water level of 17.50 m,which satisfied the requirement.However,when the reproduction period was 2,5 a and 10 a,the water level required for Qingshan Lake was 17.47,17.33 m and 17.20 m respectively,which were lower than the normal water level of 17.50 m.At this time,adjust Qingshan Lake electricity station,so as to avoid waterlogging.
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