水电站输水隧洞方案的经济性,不仅要考虑该方案的投资,同时也要考虑水流在隧洞中所损失的容量与能量的价值。输水隧洞的动能经济计算,国内沿袭苏联的经验,常用抵偿年限法或替代支出法。本文则引入收益率和资本回收系数对输水隧洞作经济分析,提出一些新的分析计算方法和计算公式,并举例说明。 The economics of hydropower station water diversion tunnels need to consider not only the investment of the project, but also the capacity and energy lost by the water flow in the tunnel. Water transport tunnel kinetic energy economy calculation, the domestic succession of the Soviet Union’s experience, commonly used compensation method or the law of replacement expenditure. In this paper, the economic analysis of water conveyance tunnel is introduced by introducing the rate of return and the capital recovery coefficient. Some new analytical methods and calculation formulas are proposed, and examples are given.