陡槽溢洪道上孔板消能特性的试验研究  

Experimental Research on Energy Dissipation Characteristics of Hole Plate in Chute Spillway

作　　者：杨丽萍[1] 高广合[1] 郎锡东[2] 李玉军 李颖卓 

机构地区：[1]沈阳农业大学水利学院,辽宁沈阳110866 [2]沈阳农业大学外语部,辽宁沈阳110866 [3]葫芦岛市水利局,辽宁葫芦岛125000 [4]辽宁省石佛寺水库工程建设管理局,辽宁沈阳110129

出　　处：《水电能源科学》2012年第6期104-107,共4页Water Resources and Power

摘　　要：运用孔板消能工能有效改善低水头、大流量陡槽溢洪道中的水流流态,显著降低陡槽溢洪道中的水流流速和提高消能率。在此采用物理模型试验的方法,结合龙屯水库陡槽溢洪道除险加固工程,通过分析水流流态、水流速度的分布及消能率,对设置在陡槽溢洪道上的孔板的消能特性进行了研究。结果表明,孔板改善了上游弯曲段形成的折冲水流的不良流态,使水流流速明显减小,孔板的消能率达到50%以上,消能效果显著。The energy dissipater of hole plate can improve the flow pattern in low head,large flow chute spillway,and reduce the flow velocity obviously and increase the energy dissipation ratio.Physical model experimental research is conducted on the energy dissipation characteristics of hole plate in chute spillway in combination of the reinforcement project at Longtun reservoir.Analysis is made on flow pattern,the distribution of flow velocity and its energy dissipation ratio.The results show that the designed hole plate is capable of improving the unhealthy flow pattern of refracted flow formed in upstream bent section,bring about an obvious decrease in flow velocity;the energy dissipation ratio of hole plate can exceed 50%,which indicates that the effect of energy dissipation is obvious.

关 键 词：陡槽溢洪道 孔板 消能特性 流速 消能率 

分 类 号：TV651.1[水利工程—水利水电工程]