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Modelling

Autores: 
Joseph Muaka, S Duma, P Mushangwe, L Gardner, Tafadzwa Chindedza, Jeanne Walls, William Joughin
Categoría: 
Rock Mechanics

This paper presents a methodology to design jointed hard rock pillars transacted a clay-filled shear zone at Ngezi mine, Portal 4 (P4), in Zimbabwe. The nature of the problem is highly complex due to the large number of joints and possible shear zone configurations. On the mine, the shear zone Read more... about Modelling hard rock jointed pillars using a distinct element and discrete fracture network approach considering the effect of a clay-filled shear structure

Autores: 
Jarek Jakubec
Categoría: 
Mining

A challenge faced by practitioners who use rock mass classification schemes is the appropriate description and incorporation of rock mass defects—this paper discusses the author's experience with those challenges. Read more... about Role of Defects in Rock Mass Classification

Autores: 
Arcesio Lizcano, A. M. Ramos , J. E. Andrade
Categoría: 
Geotechnical

This paper presents a criterion for detecting diffuse (homogeneous) instabilities in granular soils sheared under fully drained conditions. Read more... about Modelling Diffuse Instabilities in Sands Under Drained Conditions

Autores: 
Arcesio Lizcano, Mauricio Boton, Emilien Azéma, Nicolas Estrada, and Farhang Radja
Categoría: 
Geotechnical

This paper details the micro-mechanical modeling of clayey soils, by means of discrete element simulations. The effect of the platy shape of particles by reducing the interaction between particles to mechanical contact forces. Read more... about Quasistatic Rheology and Microstructural Description of Sheared Granular Materials Composed of Platy Particles

Autores: 
Arcesio Lizcano, José E. Andrade, and Alfonso M. Ramos
Categoría: 
Geotechnical

This study describes a general liquefaction flow instability criterion for elastoplastic soils based on the concept of loss of uniqueness. Read more... about Criterion for Flow Liquefaction Instability

Autores: 
Co-author: Adrian Dance
Categoría: 
Metallurgical

The Gold Fields Granny Smith mine in Western Australia has operated its grinding circuit under many conditions. This paper compares the full circuit sampling surveys from 2012 and 2014. Read more... about Gold Fields Granny Smith Grinding Circuit: A Metallurgist’s Journey of Progression

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