摘要
六郎洞电站是低水头长距离引水隧洞的水电站,通过有闸门简单溢流式、带阻抗孔的溢流式、带下室的溢流式3种型式的调压井比选研究,结果表明:闸门井兼作阻抗孔,当闸门井面积为压力引水道断面积的25%～45%时,选取带阻抗孔溢流式调压井。此型式的调压井结合了溢流式和阻抗孔式调压井的优点,限制了调压井水位波动的最高涌浪,水位波动振幅小,投资最少,优先选用带阻抗孔的溢流式调压井。当闸门井面积大于压力引水道面积的50%时,对抑制波动幅度与加速波动衰减的效果则不显著。
Liulangdong Hydropower Station is a low-water head hydropower station with long-distance diversion tunnels, this paper studies a simple overflow type, with the impedance hole overflow type and with the lower chamber a simple overflow type three types of surge shaft, the results show that the gate well as impedance hole, when gate well area of pressure diversion tunnel section area ranges from 25% to 45%, select impedance hole overflow surge shaft. This type of surge shaft combination of overflow and imped- ance hole type surge shaffs advantages, limits the surge shaft water level fluctuation of the maximum surge, water level fluctuation amplitude is small,minimum investment, overflow surge shaft with impedance holes are selected. When the gate well area is 50% greater than the pressure diversion tunnel area, the suppression of fluctuation and acceleration wave attenuation effect is not signifi- cant.
出处
《中国农村水利水电》
北大核心
2013年第2期129-133,共5页
China Rural Water and Hydropower
关键词
水电站
调压井
溢流式
hydropower station
surge shaft
overflow type
