Numerical modelling of cyclic shear behaviour of rock joints under constant normal stiffness condition
Paper
Paper/Presentation Title | Numerical modelling of cyclic shear behaviour of rock joints under constant normal stiffness condition |
---|---|
Presentation Type | Paper |
Authors | Mirzaghorbanali, Ali (Author) and Nemcik, Jan (Author) |
Editors | Aziz, Naj, Kininmonth, Bob, Nemcik, Jan, Ren, Ting and Hoelle, John |
Journal or Proceedings Title | Proceedings of the 2013 Coal Operators' Conference |
ERA Conference ID | 60723 |
Number of Pages | 8 |
Year | 2013 |
Place of Publication | Wollongong, Australia |
ISBN | 9781921522833 |
Web Address (URL) of Paper | https://ro.uow.edu.au/coal/480/ |
Conference/Event | 2013 Coal Operators' Conference |
Underground Coal Operators' Conference | |
Event Details | 2013 Coal Operators' Conference Parent Coal Operators' Conference Event Date 14 to end of 15 Feb 2013 Event Location Wollongong, Australia |
Event Details | Underground Coal Operators' Conference |
Abstract | The cyclic shear behaviour of rock joints was investigated in the laboratory under constant normal stiffness condition for low and high values of initial normal stress and asperity angle. The Universal Distinct Element Code was applied (UDEC) to simulate the laboratory behaviour using two available models. The predicted shear stress, normal stress, and dilation with shear displacement were compared with experimental results. It was observed that the change in the shear strength and recovery of dilation upon load reversal are simulated using the Coulomb Slip model for low values of initial normal stress and asperity angle when the shearing mechanism was sliding over asperities. However, the Continuously Yielding model replicated better cyclic shear behaviour of rock joints under breaking mechanism (i.e. high levels of initial normal stress and asperity angle), as this model represents progressive damage of asperities during shearing and approaching to the residual friction angle when asperities are fully degraded. |
Keywords | cyclic shear behaviour; rock joints |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
401905. Mining engineering | |
Public Notes | No paper in these proceedings is to be re-published unless with written permission from the conference organisers and/or the original authors who maintain the copyright for |
Byline Affiliations | University of Wollongong |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q537x/numerical-modelling-of-cyclic-shear-behaviour-of-rock-joints-under-constant-normal-stiffness-condition
194
total views8
total downloads0
views this month0
downloads this month