Studying the Effect of Tunnel Depth Variation on the Specific Energy of TBM, Case Study: Karaj–Tehran (Iran) Water Conveyance Tunnel | Zendy

Majid Mirahmadi | Zendy; Morteza Tabaei | Zendy; M. Soleiman Dehkordi | Zendy

Open Access

Studying the Effect of Tunnel Depth Variation on the Specific Energy of TBM, Case Study: Karaj–Tehran (Iran) Water Conveyance Tunnel

Author(s) -

Majid Mirahmadi,

Morteza Tabaei,

M. Soleiman Dehkordi

Publication year - 2016

Publication title -

journal of engineering and technological sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.202

H-Index - 14

eISSN - 2338-5502

pISSN - 2337-5779

DOI - 10.5614/j.eng.technol.sci.2016.48.4.3

Subject(s) - rock mass classification , excavation , drilling , geotechnical engineering , water tunnel , quantum tunnelling , engineering , specific energy , energy consumption , volume (thermodynamics) , tunnel boring machine , energy (signal processing) , mining engineering , structural engineering , mechanical engineering , mathematics , statistics , mechanics , materials science , physics , optoelectronics , electrical engineering , quantum mechanics , vortex

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. Polynomial equations are proposed as the best expression of the correlation between these parameters

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