【作者】 汪振； 贺立强； 牛争鸣； 张宗孝； 张卫君；

【Author】 Wang Zhen Heliqiang Ni Zhengming Zhang Zhongxiao Zhang Weijun Xi’an university of technology, Xi’an, 710048, Northwest hydroelectric investigation design & research institute

【机构】 西安理工大学； 西北水利水电勘测设计研究院；

【摘要】 在狭窄河谷修建水电站,采用厂顶泄洪的布置形式．可以较好地处理泄水建筑物与电站厂房布置争位的矛盾,充分利用原河床宽度泄洪,使洪水较顺利地导入原河床主河槽,使枢纽布置紧凑,工程量减少。但采用这种布置形式,厂顶溢流与电站过流相互作用与影响,水力特性较复杂,在我国还缺乏较多的工程实践。本文结合寺沟峡水电站模型试验研究,给出这种布置形式的电站的过流能力、上下游流态、时均压强和建筑物脉动压强及流速场分布等水力特性的试验研究结果,并表明了这种布置形式的电站下游流速叠加后沿垂线出现的均匀化、表孔水舌潜入点下移、底部回旋区减小、下游消能区水跃对电站正常发电的影响较小,但河床覆盖层回淤的问题值得注意。更多还原

【Abstract】 Build the power station on the narrow river valley, adopt the arrangement form in which the factory dam jointly releases floodwater, can deal with and sluice the building and hydropower station factory building and fix up the contradiction of fighting for location well, fully utilize the width of original riverbed to release floodwater, make the flood channel into the main river trough of original riverbed more smoothly, make the pivot assigned compactly, the project amount reduces. But adopt the form of assigning, factory is it is it flow with hy dropower station passing interaction of shedding and influencing to overflow to carry, the wa ter conservancy characteristic is relatively complicated, still lack more project practices in our country. This text combines the model experimental study of power station of ditch gorge of the temple, ability has flowed to provide the crossing of this kind of hydropower station which decorated the form, from head to foot it visit flow state, when for pressure and building for pressure and the velocity of flow field distributing result of study not experimental, water conservancy of characteristic not pulsating, indicate the low reaches of hydropower station of this kind of form of decorating, melt along the perpendicular after the velocity of flow is superposed, form hole water tongue is it is it shift down to order to slip into, bottom person who circle round reduce, low reaches can disappear district water influence generated electricity normally hydropower station to jump relatively little, but the question back to the silt of riverbed overburden is noteworthy.更多还原