摘要
在综合分析国内外高混凝士坝泄洪消能设计经验的基础上,全面论述了高混凝士坝泄洪消能的设计原则和消能方式。根据研究成果,提出了高坝泄洪的水流分散程度和冲坑深度两者关系的新见解以及动水压力的控制允许值;在国内首次将可靠度理论用于大型工程的水力设计,深入论证了二滩水电站的泄洪标准;运用模型试验和数值分析等多种手段。全面论证了二滩水电站的泄洪消能布置,优化了各泄水建筑物的体型。采用了新颖合理的消能工和通气减蚀措施;全面论证了下游河道消能区的防护措施,分析了水舌淹没扩散和水垫塘护坦板的稳定机理。还叙述了高坝泄洪雾化机理、坝体流激振动影响和抗蚀耐磨材料研究成果。
On the basis of comprehensive analysis on flood release and energy dissipation design experiences of high concrete dam at home and abroad the design principles and energy dissipation methods for ??flood release of high concrete dam are discussed. According to study results ,are presented the ideas on relation between water flow diversive degree and scour hole depth during flood release through high dam and the controlled allowance of hydrodynamic pressure, applied the reliability theory first in China for hydraulic design of big project, expounded and proven thoroughly the flood release standard for Ertan Hydroelectric Plant,expounded and proven comprehensively the flood release and energy dissipation arrangement of Ertan Hydroelectric Plant by varied means, such as model tests and numerical analysis etc. ,optimized the geometry of different outlet structures, used the different outlet structures, used the new rational energy dissipators as well as aeration and erosion-reducing measures ,expounded and proven comprehensively protection measures for energy dissipation zone in downstream river channel ,analysed the mechanism of jet submersion and dispersion as well as well as apron slab stability of plunge pool. In the paper are also described the study results,such as atomization mechanism during high dam flood release,dam vibration influence excited by water flow as well as erosion-resisting and abrasion-resistance materials etc.
出处
《水电站设计》
1991年第2期33-46,共14页
Design of Hydroelectric Power Station
关键词
混凝土
泄洪
消能建筑物
掺气
坝
high concrete dam,energy dissipator,aeration,atomization,erosion-resisting and abrasionresistance material, dam vibration, numerical analysis ,experimental research.
