Proceedings of the conference on Recent Advances in Rock Engineering (RARE 2016)

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

Authors
P.K. Rajmeny, PK Jain, Vakili Abouzar
Corresponding Author
P.K. Rajmeny
Available Online November 2016.
DOI
https://doi.org/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.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Proceedings
Recent Advances in Rock Engineering (RARE 2016)
Part of series
Advances in Engineering Research
Publication Date
November 2016
ISBN
978-94-6252-260-2
ISSN
2352-5401
DOI
https://doi.org/10.2991/rare-16.2016.2How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

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  - Recent Advances in Rock Engineering (RARE 2016)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/rare-16.2016.2
DO  - https://doi.org/10.2991/rare-16.2016.2
ID  - Rajmeny2016/11
ER  -