多孔喷头式改进型消力井试验研究  

Study on the Energy Dissipation Efficiency of the Improved Nozzle with Porous Nozzle

作　　者：邵国瀛 刘焕芳[1] 金瑾[1] SHAO Guoying;LIU Huanfang;JIN Jin(Shihezi University,Shihezi 832003,China)

机构地区：[1]石河子大学,新疆石河子832003

出　　处：《人民黄河》2018年第9期104-107,共4页Yellow River

基　　金：国家自然科学基金资助项目(11562018)

摘　　要：对于长距离管道输水工程,在超出承压范围的管道处设置消力井,可以确保管道安全运行。理论分析与室内试验发现:多孔喷头式改进型消力井的平流稳压井具有一定消能效果,当出水管布置在最低处时,平流稳压井的消能效果最佳。在理想极限状态下,井内自由水面与平流稳压井的自由水面高程相等时,平流稳压井的消能效果完全消失。多孔喷头式改进型消力井井筒的消能效果与传统式消力井井筒的消能效果相比显著提高,证明了这种改进方案是有效的。For long distance pipeline water transfer project,the pipeline is equipped with a power dissipation well beyond the pressure range.The method of theoretical analysis and laboratorytest show that the horizontal stabilizer well with improved energy dissipation well has a certain energy dissipation effect.When the outlet pipe is arranged at the lowest level,the energy dissipation effect of the horizontal well can reach the best.In the ideal limit state,the free energy of the wellbore and the free surface elevation of the horizontal well is the same as that of the horizontal well.The improvement of the energy dissipation effect of the porous nozzle type stilling well is significantly higher than that of the conventional stilling w ell,which proves that the improved scheme can effectively improve the energy dissipation effect of the stilling well.

关 键 词：长距离输水 理论分析 消能效果 消力井 平流稳压井 

分 类 号：TV61[水利工程—水利水电工程]