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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 present, the discharge and dissipation structures in the shaft in the country mainly combine the constructed diversion tunnels to make use of the temporary structures to form permanent structures, but they are often arranged and designed as separate structures. However, the FAN project in Ethiopia, based on the engineering features, Dam and shaft spillway layout as a whole structure, the bottom of the shaft connected to the bottom of the drainage ditch and dam-based drainage through the dam, the structure layout is relatively new. Hydraulic model test as a means and use of relevant theory combined with experimental data analysis, comprehensive study The spillway capacity, pressure characteristics, energy dissipation, cavitation cavitation erosion and fluctuating pressure and other hydraulic problems of this special shaft structure form the basis for the safe operation of the shaft spillway for the purpose of providing similar domestic shaft spillway engineering design New reference.