六郎洞电站溢流式调压井型式比选研究

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、带下室的溢流式三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。

Research on Liulangdong Hydropower Station Surge Shafts

Liulangdong hydropower station is the low water head hydropower station with long distance diversion tunnel, this article through gate well a simple overflow type, with the impedance hole overflow type and with the lower chamber a simple overflow type three types of surge shaft study on the scheme selection, the results show that the gate well as impedance hole, when gate well area of pressure diversion tunnel section area from 25% to 45%, select with impedance hole overflow surge shaft. This type of surge shaft combination of overflow and impedance hole type surge shaft advantages, limit the surge shaft water level fluctuation of the maximum surge, water level fluctuation amplitude is small,minimum investment, preferred overflow surge shaft with impedance hole. When the gate well area is greater than the pressure diversion tunnel area 50%, on the suppression of fluctuation and acceleration wave attenuation effect is not significant.