泄洪洞突跌掺气坎后无压洞底坡段的变化对掺气影响的研究  

Study on Aeration Influence Due to Change of Bottom Slope Back of Sudden-drop Aerator of Spillway Tunnel

作　　者：王济世 Wang Jishi

机构地区：[1]重庆市水利电力建筑勘测设计研究院

出　　处：《吉林水利》2020年第1期47-51,58,共6页Jilin Water Resources

摘　　要：针对大渡河金川水电站泄洪洞闸后突跌掺气坎空腔回水严重,造成泄洪洞掺气困难的问题,经过系列优化,提出了较优的掺气坎体型,同时针对导流工况低弗氏数情况下掺气坎效果不佳的问题,提出了导流期结束后再修建掺气设施的建议,可以为类似工程提供参考。In this paper,the author,aiming at the problem that cavity backwater is serious at back of water gate sudden-drop aerator of spillway tunnel of Jinchuan water power station in Dadu River,which results in spillway tunnel aeration difficult,by series of optimizing,put forward better shape of aerator.Moreover,in view of the problem that the aerator effect is not good under the condition of diversion condition low Froude number,proposed the suggestion that aeration facilities should be built after the end of diversion period.The results can be provided for reference in construction of similar works.

关 键 词：泄洪洞 突跌掺气坎 空腔回水 掺气减蚀 

分 类 号：TV135.2[水利工程—水力学及河流动力学]