Volume 13 (2022)
Volume 12 (2021)
Volume 11 (2020)
Volume 10 (2019)
Volume 9 (2018)
Volume 8 (2017)
Volume 7 (2016)
Volume 6 (2015)
Volume 5 (2014)
Volume 4 (2013)
Volume 3 (2012)
Volume 2 (2011)
Volume 1 (2010)
Rock Mechanics
Risk management in urban tunnels using methods of game theory and multi-criteria decision-making

M. Nikkhah; M. A. Ghasvareh; N. Farzaneh Bahalgardi

Volume 10, Issue 3 , July 2019, , Pages 597-611


  In general, underground spaces are associated with high risks because of their high uncertainty in geotechnical environments. Since most accidents and incidents in these structures are often associated with uncertainty, the development of risk analysis and management methods and prevention of accidents ...  Read More

Numerical assessment of influence of confining stress on Kaiser effect using distinct element method

M. Nikkhah

Volume 8, Issue 2 , April 2017, , Pages 215-226


  Nowadays acoustic emission (AE) testing based on the Kaiser Effect (KE) is increasingly used to estimate the in-situ stress in laboratories. In this work, this effect is assessed on cylindrical specimens in numerical simulations of the cyclic loadings including loading, unloading, and re-loading cycles ...  Read More

Evaluation of structural analysis of tunnel segmental lining using beam-spring method and force-method (Case study: Chamshir water conveyance tunnel)

M. Nikkhah; Seyed S. Mousavi; Sh. Zare; O. Khademhosseini

Volume 8, Issue 1 , January 2017, , Pages 111-130


  The joints between segmental rings can withstand a certain amount of bending moment as well as axial and shear forces. Generally, in the structural analysis of tunnel segmental lining, the joints can be modeled as elastic hinges or rotational springs, and their rigidity should be demonstrated in terms ...  Read More