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Browsing by Author "Sellers, EJ"

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Development of a method to estimate coal pillar loading

Author: Roberts, David P ; Van der Merwe, JN ; Canbulat, I ; Sellers, EJ ; Coetzer, S Date: Sep 2002 The primary goal of this project was to determine the accuracy and validity of the Tributary Area Theory (TAT) and to provide better estimates of pillar load using numerical modelling and other tools. Literature review highlighted that previous ... Read more
Discrete fracture in quasi-brittle materials under compressive and tensile stress states

Author: Klerck, PA ; Sellers, EJ ; Owen, DRJ Date: 2004 A method for modelling discrete fracture in geomaterials under tensile and compressive stress fields has been developed based on a Mohr-Coulomb failure surface in compression and three independent anisotropic rotating crack models in tension. ... Read more
Experimental investigation of fundamental processes in mining induced fracturing and rock instability.

Author: Napier, JAL ; Drescher, K ; Hildyard, MW ; Kataka, MO ; Malan, DF ; Sellers, EJ Date: Mar 2002 The main themes of the project GAP601b have been experimental investigations of creep effects, further underground observations of time-dependent behaviour, investigation of scale effects and rock mass stability and studies of the interaction ... Read more
Modelling of the effect of discontinuities on the extent of the fracture zone surrounding deep tunnels

Author: Sellers, EJ ; Klerck, P Date: Oct 2000 A series of physical and numerical model tests were performed to investigate the behaviour of the rock surrounding circular excavations under high confining pressures. The aim was to provide information on the formation of fractures around ... Read more
Understanding and determining the variability of the primitive stress environment.

Author: Sellers, EJ ; Coetzer, SJ ; Kamstra, R Date: Oct 2002 The primitive stress state is an important input into the design of underground excavations. However, it is well known that the stress state varies considerably from place to place. The aim of this project was to determine the main causes of ... Read more

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Browsing by Author "Sellers, EJ"

Browsing by Author "Sellers, EJ"

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