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水利经济计算是研究水利工程建设是否可行的前提,是对工程方案进行优选的依据。所有水利规划、水利工程的可行性研究和设计文件,都必须包括有相当深度的经济计算和评价内容。在进行冯家山水库和宝鸡峡引渭工程各方案的互相比较选择时,首先就各方案技术经济指标进行分析,然后参考经济计算的结果,并考虑其他因素,决定各方案的取舍,当时技经比较采用的方法如下: 1.绝对抵偿年限法(还本年限法),采用公式为: T_(ok)=K_i/Q_i-N_i式中T_(ok)——绝对抵偿年限; K_i——某方案投资总和; Q_i——某方案的年效益; N_i——某方案的年费用。
The economic calculation of water conservancy is the prerequisite to study whether the construction of water conservancy project is feasible or not, and is the basis for the optimization of the project plan. All water conservancy planning, water conservancy project feasibility studies and design documents, must include a considerable depth of economic calculations and evaluation content. During the comparison and selection of various programs of Fengjiashan Reservoir and Baoji Gorge Weicheng Project, the technical and economic indicators of each program were firstly analyzed and then the economic calculation results were taken into consideration and other factors were taken into consideration to decide the trade-offs of the various programs. At that time, Comparison of methods used are as follows: 1. Absolute compensation method (also this method), using the formula: T_ (ok) = K_i / Q_i-N_i where T_ (ok) - absolute offset years; K_i - a program The total investment; Q_i - the annual benefits of a program; N_i - the annual cost of a program.