International Journal of Geological and Geotechnical Engineering
Tunnel Stability under Different Conditions: Analysis by Numerical and Empirical Modeling
Abstract
Abstract Stability of the tunnels under different geotechnical conditions can be effectively assessed using numerical modelling techniques. In this paper, the stability of tunnel was analyzed along with support requirement, based on stress distribution around tunnel, using the finite element modelling software – NISA. A case study was taken up of a tunnel proposed by Karnataka Netravari Nigam Limited near Siddapura, Udupi District, Karnataka, India. Results from finite element modeling were verified using empirical approach (Geomechanics Rock Mass Classification) and CMRR (Coal Mine Roof Rating) and ARBS (Analysis of Roof Bolts) softwares. Results from FEM and RMR classification system were in agreement with the other approaches. Keywords: numerical modeling, RMR classification, rock bolting, tunnel stabilityReferences (12)
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