Abstract
For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version).ABSTRACT The article substantiates the motives and significance of construction of new tunnels within strategic development of the network of Russian railways. The classification of railway tunnels based on the purposes of their creation and the types of generated effects is proposed. Approaches to assessment of feasibility of tunnels, which allow the «straightening» of the existing rai lway communication, improving its quality characteristics and efficiency, are considered. Based on the logical-analytical method, the spectrum of potential effects arising thanks to the construction of such tunnels at both the sectoral and macro levels is determined. Particular attention is focused on the choice of the calculation horizon and the discount rates. It is concluded that the construction of a railway tunnel can be considered expedient even with a long payback period of capital investments (15-20 years) in the case of a significant net discounted effect for the chosen calculation horizon. Keywords: railway tunnels, theory, construction, reconstruction, classification, feasibility assessment, discounting, remote effects.
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