A strain-softening numerical model of core discing and damage

Corthésy, Robert; Leite, M.H.

doi:10.1016/j.ijrmms.2007.05.005

Cited by 51 publications

(19 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The result is similar to the ones obtained by a cohesionsoftening friction-hardening (CSFH) model [48], where plastic shear band was used as an indicator of rock failure. A detailed discussion on how constant dilation angles affect the development of shear bands and shear strains can be found in [54,55]. As can be seen from Fig.…”

Section: Simulation Resultsmentioning

confidence: 99%

Influence of plastic shear strain and confinement-dependent rock dilation on rock failure and displacement near an excavation boundary

Zhao

Cai

2010

International Journal of Rock Mechanics and Mining Sciences

View full text Add to dashboard Cite

Section: Simulation Resultsmentioning

confidence: 99%

Influence of plastic shear strain and confinement-dependent rock dilation on rock failure and displacement near an excavation boundary

Zhao

Cai

2010

International Journal of Rock Mechanics and Mining Sciences

View full text Add to dashboard Cite

“…As have others before them (Corthésy and Leite, 2008;Matsuki et al, 2004), Valley et al (2010a) carried out a series of numerical analyses to simulate the drilling process and its effect on the recovered core. Their results suggest that, as the drilling progresses and the induced stress reaches a particular threshold, tensile yielding initiates from the outer edge of the core and propagates towards the centre of the core when the bit passes the point in question.…”

Section: Influence Of Core Damagementioning

confidence: 99%

Progress and challenges in some areas of deep mining

Brown¹

2012

Proceedings of the Sixth International Seminar on Deep and High Stress Mining

View full text Add to dashboard Cite

Deep Mining 2012 is the sixth in a series of international seminars on deep and high stress mining which began with a seminar held in Perth in November 2002, almost a decade ago. The early announcements for this seminar listed ten seminar themes. This paper seeks to make contributions to the discussion of progress made in four of these themes-geomechanics risks, risk assessment and management, rock behaviour under high stress, and numerical modelling-largely, but not only, through a review of the papers published in the proceedings of the five previous seminars. Particular emphasis is placed on the risks associated with the new generation of block and panel caving operations or "super caves". Some remaining challenges in the four theme areas discussed are also identified.

show abstract

“…We assumed that the friction angle, cohesion, dilation angle and tensile strength soften with increasing plastic strain after the yield point. Many researchers used a linear softening model (Edelbro, 2009;Lee and Pietruszczak, 2008;Park et al, 2008), but a different relationship was proposed because the strength softens much faster in the beginning (Corthésy and Leite, 2008). Fig.…”

Section: Development Of a Numerical Modelmentioning

confidence: 99%