南水北调中线冰期输水安全调度分析  

Safety Regulations of Water Conveyance in the Middle Route of South-to-North Water Diversion Project in Ice Period

作　　者：杨开林[1] 王涛[1] 郭新蕾[1] 付辉[1] 郭永鑫[1] 

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《南水北调与水利科技》2011年第2期1-4,8,共5页South-to-North Water Transfers and Water Science & Technology

基　　金："十一五"国家科技支撑计划资助项目(2006BAB04A12);国家自然科学基金项目(50609031)

摘　　要：分析了南水北调中线黄河以北冬春气温特点,可能发生的冰凌现象及运行原则。提出了防治倒虹吸管冰塞的临界淹没水深,以及在明渠中形成稳定初始冰盖的临界水力学条件,最后研究了开河特点及冰凌灾害的控制方法。This article investigated the air temperature characteristics and icing process in winter-spring period during past 50 years in the North of the Yellow River along the Middle Route of South-to-North Water Diversion Project.The critical submerged water depths of the inverted siphons against ice jams and the critical hydraulic criteria of the initial smooth ice cover forming were determined.At last,the paper provided the prevention method against ice disasters in the break-up in spring,including ice jams and ice floods

关 键 词：南水北调中线 水安全 调度分析 临界淹没水深 冰期 冰凌灾害 倒虹吸管 力学条件 

分 类 号：TV68[水利工程—水利水电工程] TV143