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Mirahmadi, Majid
Department of Mining Engineering, Isfahan University of Technology, Isfahan 84156-83111
Engineering

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Journal : Journal of Engineering and Technological Sciences

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Studying the Effect of Tunnel Depth Variation on the Specific Energy of TBM, Case Study: Karaj–Tehran (Iran) Water Conveyance Tunnel Mirahmadi, Majid; Tabaei, Morteza; Dehkordi, Mohsen Soleiman
Journal of Engineering and Technological Sciences Vol 48, No 4 (2016)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.493 KB) | DOI: 10.5614/j.eng.technol.sci.2016.48.4.3

Abstract

The tunnel-boring machine (TBM) is a common piece of equipment used in tunneling projects. For planning a mechanical excavation project, prediction of TBM performance and the specification of design elements such as required forces are critical. The specific energy of excavation (SE), i.e. drilling energy consumption per unit volume of rock mass, is a crucial parameter for performance prediction of a TBM. In this study, the effect of variation of tunnel depth on SE by considering the post-failure behavior of rock mass was investigated. Several new relations between SE and tunnel depth are proposed according to the statistical analysis obtained from Karaj–Tehran Water Conveyance Tunnel real data. The results showed that there is a direct relation between both parameters and .A polynomial equations are proposed as the best expression of the correlation between these parameters.
Co-Authors Dehkordi, Mohsen Soleiman Tabaei, Morteza