孔板在改善溢洪道弯道急流流态中的应用研究  

Research on application of orifice in improving jet flow pattern in curved spillway

作　　者：宓永宁[1] 刘志勇[1] 范远东[2] 耿忠 

机构地区：[1]沈阳农业大学水利学院,辽宁沈阳110866 [2]辽宁省水利水电勘测设计研究院,辽宁沈阳110006 [3]葫芦岛市水利局,辽宁葫芦岛125001

出　　处：《人民长江》2011年第4期78-80,共3页Yangtze River

摘　　要：为了在较短的距离内消除经圆弧溢洪道集中下泄水流的大部分动能,并改善水流在平面及过水断面上的流态,根据弯道急流的特点,并结合龙屯水库弯曲溢洪道的工程实践,对在溢洪道上设置的孔板消能工进行了模型试验研究。结果表明:在溢洪道泄槽上设置孔板,可改善弯道冲击波在光滑溢洪道上形成的折冲水流的恶劣流态,使消力池内涌浪高度减小,水流流态相对稳定,主流冲击波基本消失。对整个试验过程作了详细介绍。In order to eliminate the most kinetic energy of concentrated discharge flow through circular-arc spillway and improve the flow pattern in the flat and flow section in a comparatively short distance,we carry out a model test of orifice energy dissipater arranged in the spillway according to the characteristics of jet flow around the curve and with the combination of engineering practice in Longtun Reservoir.The test results show that the arrangement of orifice in spillway can improve the flow pattern of deflected flow and decrease the height of wave surge in stilling basin,as well as make the flow relatively stable;the shock wave of main flow basically disappear.The test process is also described in detail.

关 键 词：弯曲溢洪道 孔板 消能 急流冲击波 

分 类 号：TV651.11[水利工程—水利水电工程]