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针对抽水蓄能电站水位不断升高导致高水压下输水隧洞的渗漏问题,基于达西定律建立了理论模型,推导了有压情况下输水隧洞渗漏量的计算公式,对比分析了参数对隧洞渗漏量的影响。结果表明,输水隧洞渗漏量除了与水头差和渗透系数有关外,还与隧洞与地面的夹角及渗径与管长的比值等因素有关。案例应用表明,该计算方法误差较小,具有较好的适用性。
In view of the leakage of water conveyance tunnel under high water pressure caused by the rising water level of pumped storage power station, a theoretical model is established based on Darcy’s law, and the calculation formula of seepage amount of water conveyance tunnel under pressure is deduced. Influence of Parameters on Tunnel Leakage. The results show that the leakage of water conveyance tunnel is related to the water head difference and permeability coefficient, but also to the angle between tunnel and ground and the ratio of pipe diameter to pipe length. The case application shows that this method has less error and has better applicability.