库什塔依水电站溢洪洞陡槽台阶式消能试验研究  

Experimental Study on Spillway Stepped Energy Dissipation of Kushitayi Hydropower Staiton

作　　者：王永飞 李守强 杨慧 

机构地区：[1]新疆伊犁库克苏河水电开发有限公司,新疆伊犁835500 [2]中国水利水电第四工程局有限公司,青海西宁810006 [3]中电投新疆能源有限公司伊犁项目部,新疆伊犁835500

出　　处：《水力发电》2012年第4期66-67,70,共3页Water Power

摘　　要：库什塔依水电站溢洪洞采用了陡槽台阶式消能。为确定相对合理的台阶高度、体形,进行了溢洪洞陡槽段单体水工模型试验。试验结果表明,设置47个高度为1.0 m的台阶具有较好的消能效果;台阶面在各运行工况流态良好;台阶水平面在各运行工况下均为正压强,但台阶面的竖向面在台阶下游有负压强出现。采用在台阶进口处增加掺气设施可避免可能发生的空蚀破坏。The stepped energy dissipation is used in the spillway of Kushitayi Hydropower Station. For determine reasonable step＇s height and shape, the hydraulic model tests are conducted. The results show that： （a） the step arrangement with a single height of 1.0 m and total number of 47 has better energy dissipation; （b） the flow pattern on step surface is in a good condition; and （c） the pressures on the horizontal surface of all steps under all operating conditions are positive, but there are negative pressure on the vertical surface of lower steps. Installing aeration facilities at the entrance of step can avoid cavitation damage that may be occurred under certain operating conditions.

关 键 词：消能率 水流流态 压强分布 库什塔依水电站 

分 类 号：TV651.2[水利工程—水利水电工程] TV742