滇池流域暴雨洪水特征分析与研究  

Feature Analysis and Research on Rainstorm and Flood of Dianchi Basin

作　　者：李科国 李中元 施田昌 许志敏 顾世祥 LI Keguo;LI Zhongyuan;SHI Tianchang;XU Zhimin;GU Shixiang(Yunnan Institute of Water & Hydropower Engineering Investigation, Design and Research, Kunming 650021, China;Power China Kunming Engineering Corporation Limited, Kunming 650051, China;Kunming Institute of Water & Hydropower Engineering Investigation, Design and Research, Kunming 650021, China)

机构地区：[1]云南省水利水电勘测设计研究院,云南昆明650021 [2]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051 [3]昆明市水利水电勘测设计研究院,云南昆明650021

出　　处：《人民珠江》2019年第4期52-58,共7页Pearl River

基　　金：国家水体污染控制与治理科技重大专项"滇池流域水资源联合调度改善湖体水质关键技术与工程示范"(2013ZX07102-006-01);云南省技术创新人才计划(2011C1092)

摘　　要：昆明市主城区大观楼站暴雨主要发生于5—8月份,6、8月较明显(各占1/3),5月稍弱,重现期1～100 a的10～180 min的暴雨衰减指数0. 761～0. 821。"7·19"大暴雨是滇池流域近90 a间最大日降水量,昆明站实测洪峰87. 5 m^3/s,现状洪峰为114 m^3/s,暴雨洪水约为30年一遇。滇池入湖洪水由陆地洪水及湖面暴雨组成,以湖面显著(占42%～56%),盘龙江次之(占9. 5%),主要发生在7、8月份(占61%),两个月出现的概率差异不大; 5、11月发生的概率最低(分别仅占3. 0%、0. 7%),滇池入湖洪水历年基本具有一致性。为滇池防洪的地区协调、分时段方案提供技术支撑。Generally speaking, the rainstorm of Daguan precipitation station of main urban area of Kunming city occurs during May to August. The rainstorm of June and August is significantly heavier(each contributes one-thirds of overall rainfall during this period.). The rainstorm of May is lighter. In the return of 1 to 100 years, the rainstorm attenuation index of 10 to 180 minutes rainstorm is 0.761 to 0.821.“ 7[KG*2]·19 ” heavy rainstorm is the heaviest daily precipitation of Dianchi Basin in 90 years, the measured flood peak of Kunming precipitation station is 87.5 m 3/s, the present flood peak is 114 m 3/s. Rainstorm and flood occur about once every 30 years. The flooding of the Dianchi Lake into the lake is composed of land floods and heavy rains on the lake. The lake surface is significant (42~56%), followed by Panlongjiang (9.5%). It mainly occurred in July and August (61%), with little difference in the probability of occurrence in two months. The probability of occurrence of May and November is the lowest(only contributes to 3.0% and 0.7% respectively) and the inflowing flood of Dianchi Lake is annually of consistency. The study can technically support the flood control of the Dianchi Lake on regional coordination and time-period partitioning.

关 键 词：暴雨特性 大暴雨洪水案例 入湖洪水 滇池流域 

分 类 号：TV122[水利工程—水文学及水资源]