巴基斯坦卡洛特水电站导流洞水工模型试验研究

Hydraulic model research of diversion tunnels on Karot Hydropower Project in Pakistan

为了研究巴基斯坦卡洛特水电站导流洞的泄流能力、水流流态及出口消力池消能效果,同时验证导流洞设计的合理性,运用导流洞水工模型试验,模拟了各种工况下导流洞进出口水流形态、流速分布等。试验结果表明:模型泄流能力值与计算值一致,进出口水流较平顺,洞身段均未出现负压,经过消力池后河床底部流速值显著降低。研究成果证明了导流洞各段体型设计合理有效,消力池消能效果显著。

To analyze the discharging capacity,flow state and the energy dissipation of diversion tunnels on Karot Hydropower Project in Pakistan,together to confirm that the design was appropriate,the flow state and velocity of inlet and outlet under all work conditions were simulated by the hydraulic model test of diversion tunnels.The test results demonstrated the values of discharging capacity between test and calculation were familiar,the flow state of inlet and outlet was smooth,the pressure flow was positive at all the sections and the velocity of river bed downstream the plunge pool was obviously reduced.These results confirmed that the diversion tunnel design is proper and the energy dissipation is well.