摘要
鉴于淋溪河水电站溢洪道原设计方案的种种缺陷,基于弗劳德准则,采用1∶60的模型比尺,通过设置表孔和深孔出口体型,研究了不同体型参数下泄流能力和水流对水垫塘底板的冲击压力。试验结果表明,优化后的底板冲击压力由14.50kPa降至11.44kPa,脉压均方根由95.67kPa降至45.55kPa,同时水垫塘长度由269.5m减小至169.5m,仍满足泄洪消能要求。研究成果可为同类工程提供参考。
In view of the defects of the original design scheme of spillway in Linxihe hydropower station,based on the Froude principle and 1∶60 model scale,the impact pressure of the discharge capacity and water flow on the bottom plate of the water cushion was studied by setting the shape of crest and bottom outlets.The test results show that the optimized floor impact pressure dropped from 14.50 kPa to 11.44 kPa,the root mean square root of pulsating pressure was reduced from 95.67 kPa to 45.55 kPa as well as t he length of the water cushion pond decreased from 269.5 mto 169.5 m,which still meets the requirement of flood discharge.The research results can provide reference for similar projects.
出处
《水电能源科学》
北大核心
2017年第11期73-75,共3页
Water Resources and Power
关键词
消能
水工模型
表孔
深孔
energy dissipation
hydraulic model
crest outlet
bottom outlet
