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Keywords: approximation
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Proceedings Papers
A Fractal Analysis Method to Characterise Rock Joint Morphology
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Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-063
... descriptor approximation geologist reservoir geomechanics environmental science 833 morphology characterisation joint roughness coefficient fractal dimension asperity roughness theory geology practice iop publishing iop conf rock engineering koch Mechanics and Rock Engineering, from Theory...
Proceedings Papers
Microstructural Characterization of Oolitic Rocks and Numerical Evaluation of Their Effective Elastic Properties
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Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-008
... modeling based on analytical solution is not relevant. Then, pores are approximated by ellipsoids using principal components analysis (PCA) method, which allows us to obtain the geometrical properties such as length of semi-axes and orientation of ellipsoids. To validate mechanically this approximation, we...
Proceedings Papers
Evaluation of Mechanical Characteristics of Rock Mass for Design of Underground Construction
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Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-086
... of the hierarchy of blocky structure; results of Kim's modeling of blocky structures. We confirmed the hypothesis, which states that distribution of relative displacement in the inelastic domain is an approximate function of the angle of internal friction (AIF) only. Based on this concept, the method...
Proceedings Papers
A Coupled XFEM-HM Method for Fracture Dynamics and Groundwater Flow in Geological Porous Medium
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-234
... the porous medium. The XFEM method, based on the partition of unity (Melenk et al., 1996) overcomes the mesh dependences of the fracture representation by enriching the classical finite element approximation of the displacement and pore pressure fields with additional degrees of freedom (dof). Espe- cially...
Proceedings Papers
An Approximation to the Prediction of the Extent of the Area Crushed around a Blasting Drill
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-112
... prediction application Completion Installation and Operations detonation velocity international journal hole diameter granite experimental data strength Rock mechanics diameter bukit timah granite approximation Loading Rate stress state compressive strength dynamic pressure equation Rock...
Proceedings Papers
A Simple Approximation to Estimate the Hoek-Brown Parameter ?mi? For Intact Rocks
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Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-034
...Rock Mechanics in Civil and Environmental Engineering Zhao, Labiouse, Dudt & Mathier (eds) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-58654-2 A simple approximation to estimate the Hoek-Brown parameter mi for intact rocks M. Sari Department of Mining Engineering, Aksaray University...
Proceedings Papers
Application of a Non-linear Confinement Sensitive Constitutive Model to Mine Scale Simulations Subject to Varying Levels of Confining Stress
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Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-032
... will focus on the application of a modified Menétrey and Willam constitutive model, utilising a smooth approximation of the Hoek-Brown failure criterion, to better account for the effects of varying confinement on the yield potential and the relationship between stress and strain. 1 INTRODUCTION Achieving...
Proceedings Papers
Influence of Density-dependent Flow And Transport Processes In the Strá? Pod Ralskem Area
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Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-031
... waste management approximation Upstream Oil & Gas density-dependent flow density effect decontamination variant maryska Cenomanian aquifer operation aquifer Turonian aquifer sandstone initial concentration produced water discharge concentration porosity solute transport gIL...
Proceedings Papers
Modelling of the Transport of Species In the Fractured Rock Environment
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Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-061
..., we can approximate the original 3-D fractures y planar elliptic or polygonal disks whose frequency, Size, assigned aperture, and orientation are statisti- cally derived from field measurements (Fig. 2, 3), and then consider the 2-D Darcy flow through such a network. However, due to high computer...
Proceedings Papers
Large-scale Modelling of T-M Phenomena From Underground Deposition of the Spent Nuclear Fuel
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Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-009
... of the BE and CN steps. To make this comparison computationally cheap, we shall use only the residual corresponding to the substitution of the BE time step solution I! into the CN equation, rj =(M0.56tjKrj -(M " -0.5MjKJ-' -0.5qj, -0.5qt'. Then the CN step increment can be approximated by the approximate value !CN...
Proceedings Papers
Borehole Stability In Laminated Rock
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Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-096
..., 1986). wellbore integrity approximation reservoir geomechanics Upstream Oil & Gas Rotterdam mechanism shear failure hydraulic fracturing concentration Dyskin crack growth Reservoir Characterization Wellbore Design borehole breakout borehole compression Rock Mech stability...
Proceedings Papers
3D Geomechanical Simulations of Leached Cavern: Are They Mandatory
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Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-142
... concepteurs preferaient donc effectuer des simulations 2D jugees intuitivement "equivalentes" pour degrossir Ies problèmes avant d'utiliser leur jugement d'ingenieur. La mise à disposition d'un nouveau code de calcul, baptise VIPLEF-3D, a permis aux auteurs de remettre en cause certaines approximations...