Dr. Sharrock has 15 years industry experience in a wide range of rock mechanics positions such as Principal Geotechnical Engineer (Newcrest Mining NL), Rock Mechanics Engineer (Mt Isa Mines), Senior Geotechnical Consultant (AMC Consultants), Senior Lecturer in Geotechnical Engineering (UNSW) and Associate Professor - Caving Geomechanics (UQ).
The Fifth International Itasca Symposium will be held at the University of Vienna (Austria). The Symposium will features the application of Itasca software for solving engineering and scientific challenges in geomechanics, hydrogeology, microseismicity, and more.
Mr Hebert is a geotechnical engineer with experience in both the mining and civil industries. He has provided consulting on many projects including underground mining (e.g. block cave mining, pillar stability), open pit mining, underground excavations (e.g. tunnels, caverns, nuclear waste storage) and dams.
Conventional numerical methods of slope analysis are mainly based on
continuum approximation of the rock mass and the assumption of shear
failure. Slope Model utilizes a novel approach that performs simulations
of selected 3D sectors of rock slope stability in hard, fractured rock
masses, consisting of any number of planar benches. The software
implements a version of the Synthetic Rock Mass (SRM) approach (Pierce
et al., 2007) applied to the specific case of rock slopes. SRM allows
movement on joints (sliding and opening) as well as fracture of intact
rock. The rock mass contains joint segments derived from a
user-specified DFN (discrete fracture network). Non-steady fluid flow
and pressure within the network of joint segments are modeled, and
several aspects of fluid-rock interaction are represented, such as
effective stress (for sliding behavior) and pressure response due to
changes in rock geometry (e.g., bench removal). This three-dimensional
modeling software is based on a lattice scheme that handles
discontinuities and new fractures in the same way as Distinct Element Method
(DEM), but is five to ten times faster. Fluid flows in the joints and
rock matrix, and the flow network is automatically extended as new
fractures form. Slope Model was developed as part of the Large Open Pit (LOP) Project.
Contact us for more information, download selected abstracts, or download our Technology Adaption Program (TAP) leaflet to become involved with Slope Model development.
The left-hand photograph is from Adhikary et al (1997), corresponding to his centrifuge Test 7, showing post-failure deformation of a toppling assembly of layers oriented with initial dips of 69o, and a slope angle of 70o. The right-hand plot is from a lattice simulation of a similar system, after failure (but limited to small strain deformation). The black dots denote broken bonds, and the colored vectors denote displacements (where red is large displacement and blue is small displacement). The red fracture line, derived from the centrifuge result, is superimposed upon the numerical result.
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