Techno Press

Computers and Concrete   Volume 22, Number 2, August 2018, pages 239-248
Influence of TBM operational parameters on optimized penetration rate in schistose rocks, a case study: Golab tunnel Lot-1, Iran
A. Eftekhari, A. Aalianvari and J. Rostami

Abstract     [Full Text]
    TBM penetration rate is a function of intact rock properties, rock mass conditions and TBM operational parameters. Machine rate of penetrationcan be predicted by knowledge of the ground conditions and its effects on machine performance. The variation of TBM operational parameters such as penetration rate and thrust plays an important role in its performance. This study presents the results of the analysis on the TBM penetration rates in schistose rock types present along the alignment of Golab tunnel based on the analysis of a TBM performance database established for every stroke through different schistose rock types. The results of the analysis are compared to the results of some empirical and theoretical predictive models such as NTH and QTBM. Additional analysis was performed to find the optimum thrust and revolution per minute values for different schistose rock types.
Key Words
    golab tunnel; penetration rate; tunnel boring machine; TBM operational parameters
A. Eftekhari, A. Aalianvari: Department of Mining Engineering, Faculty of Engineering, University of Kashan, Kashan, Iran
J. Rostami: Department of Mining Engineering, Colorado School of Mines, United States

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