3D-Numerical simulation of a mine using cohesion-softening, friction-softening and hardening behavior

DOI

10.2991/rare-16.2016.2How to use a DOI?

Keywords

cohesion softening; friction softening; strain softening; spalling; breakouts

Abstract

Numerical modeling is a potent tool to evaluate stability and to assist in long term planning of a mine along with predictive modeling of planned mining situations. However, selection of proper input properties regarding the rock mass still intrigues the Rock Mechanics community. A well-documented case study of a hard rock mine situated in moderately high stress regime practicing sublevel open stoping has been simulated using 3D finite difference method (FLAC3D). The mine was modeled using three types of constitutive material model – Mohr-Coulomb with strain-softening post peak, bi-linear Mohr-Coulomb with strain-softening post peak, Mohr-Coulomb with cohesion softening/friction hardening (CSFH) post peak. Outcome of all approaches have been compared with actual ground conditions. The comparison revealed that the numerical models using the bi-linear Mohr-Coulomb with strain-softening post peak provides most realistic match to the observations in the mine including instability of the crown pillars.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - P.K. Rajmeny
AU  - PK Jain
AU  - Vakili Abouzar
PY  - 2016/11
DA  - 2016/11
TI  - 3D-Numerical simulation of a mine using cohesion-softening, friction-softening and hardening behavior
BT  - Proceedings of the conference on Recent Advances in Rock Engineering (RARE 2016)
PB  - Atlantis Press
SP  - 11
EP  - 20
SN  - 2352-5401
UR  - https://doi.org/10.2991/rare-16.2016.2
DO  - 10.2991/rare-16.2016.2
ID  - Rajmeny2016/11
ER  -