FAN工程竖井溢洪道水工模型试验  

Study of shaft spillway hydraulic model test of Finchaa-Amerti-Neshe(FAN) project

作　　者：王均星[1] 胡凯[1] 陈规划[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2010年第2期158-161,165,共5页Engineering Journal of Wuhan University

摘　　要：目前国内竖井泄流消能建筑物主要是结合已建导流隧洞,将临时建筑物加以利用形成永久建筑物,但往往都是作为单独结构进行布置设计,而埃塞俄比亚FAN工程根据工程特点,将土石坝与竖井溢洪道布置成为整体结构,竖井底部连接泄水底孔和坝基泄水管共同穿越大坝,结构布置方式比较新颖.以水工模型试验为手段,并运用相关理论结合试验数据进行分析,综合研究这种特别的竖井结构形式的溢洪道的泄流能力、压力特性、消能、空化空蚀及脉动压力等水力学问题,为该竖井溢洪道安全运行提供依据,以期为国内同类竖井溢洪道工程设计提供新的参考依据.At the present time,shaft buildings of discharge and energy dissipation mainly combine with diversion tunnels which have been built,and temporary buildings are used to form permanent buildings;but the shaft spillway is often arranged as a single structure;while in Finchaa-Amerti-Neshe Multipurpose Project of Ethiopia,it is combined with the dam into a whole structure;the underneath of shaft combining bottom outlet with the dam foundation pipes across the dam together.In this paper,research is seriously engaged on the particular form of the shaft spillway by means of hydraulic model test,and applies both the relevant theory and test data to analyze discharge capacity,pressure characteristics,energy dissipation,cavitation,fluctuating pressure and other hydraulic problems.Meanwhile,it provides a basis for safe operation of the shaft spillway,in the hope of providing reference for designs of similar projects.

关 键 词：竖井溢洪道 消能 空蚀 脉动压力 

分 类 号：TV131.6[水利工程—水力学及河流动力学]