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本文采用成本与效益分析的方法,从经济上对矿井合理服务年限的定量问题,作了理论上的探讨。提出按煤矿自身能够提供再生产所需要的资金,作为确定矿井服务年限下限值的合理性准则。取国民经济的最佳积累率为25％,推导出矿井合理的最低服务年限计算式 T=1n{1-r[DK/(B_m-C_m)ω_1-(ω_2)/((1+r)~t)+ω_3]}~(-1)/(1n(1+r))并编制了计算图。它可作为矿区总体规划和矿井设计时,确定矿井服务年限的依据之一。用这样方法,对兖州南屯等五个矿井进行了实例计算,对一般取值范围下的矿井合理服务年限进行了简要分析。结果认为,通常情况下大中型矿井的服务年限应在40年以上;缩短矿井建设工期,尽快达到设计能力和生产期间尽可能地增加产量,有利于提高矿井生产的经济效益。
In this paper, the method of cost and benefit analysis is used to theoretically discuss the quantitative problem of reasonable service life of mine in economy. Proposed by the coal mine itself can provide the necessary funds for reproduction, as the lower limit of mine service life reasonable criteria. The best accumulation rate of the national economy is 25%, and the reasonable minimum service life of the mine is deduced as follows: T = 1n {1-r [DK / (B_m-C_m) ω_1- (ω_2) / (1 + r) t) + ω_3]} ~ (-1) / (1n (1 + r)). It can be used as a master plan and mine design, determine the service life of the mine one of the bases. In this way, five mines, such as Nantun, Yanzhou, were calculated and the reasonable service life of mines in the general range was analyzed. The result shows that the service life of large and medium-sized mines should generally be over 40 years; shortening the construction period of mines, reaching the design capacity as soon as possible and increasing the output as much as possible during production, which is beneficial to increase the economic benefits of mine production.