摘要
采用1:40减压模型,通过测试流态、水下噪声和脉动压力等水力参数,对亭子口水电站闸墩尾部跌坎式底流消力池的空化空蚀特性进行了研究。成果表明:闸墩尾部区域存在强度为发展阶段的剪切流空化,采用8.00m高度的跌坎消力池后,消力池底板空蚀破坏的可能性较小;但消力池边墙与闸墩内壁侧扩距离较小时,边墙空蚀破坏的可能性较大;消力池边墙与闸墩内壁侧扩距离增至4.20m时,边墙空蚀破坏的可能性显著降低。
The decompression model of 1：40 was used to research cavitation and erosion characteristics of energy bottom-dissipation pool with step-down floor at the tail of sluice pier of Tingzikou Hydropower Station by hydraulic parameter test of flow pattern,underwater noise and fluctuated pressure and so on.The results show that the cavitation of shear flow at the bottom pier is in a developing stage,the possibility of cavitation erosion on the floor of pool is little when adopting 8 m energy dissipation pool with step-down floor;the cavitation damage of the side wall of energy dissipation pool is more likely to occur with the small distance between side wall of energy dissipation pool and internal wall of pier,and the possibility of cavitation damage of side wall is significantly declined when the distance increases to 4.20 m.
出处
《人民长江》
北大核心
2011年第21期40-41,69,共3页
Yangtze River
关键词
跌坎消力池
空化
溃泡脉冲
底孔
亭子口水电站
energy dissipation pool with step-down floor
cavitation
fluctuating pressure of bursting bubble
bottom outlet
Tingzikou Hydropower Station
