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Keywords: numerically
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1205
... ABSTRACT: To assess the stability of underground openings by using the numerical modeling tool, the stress state (i.e., initial and induced stresses) should be generated accurately. The objective of the present paper is to propose a methodology to numerically initialize the pre-mining stress...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1788
... ABSTRACT: In this study, results from two series of indirect tensile tests on Dionysos marble specimens, the Brazilian test and the ring test, are compared to those evaluated numerically by using the distinct element code PFC2D. Circular disc specimens with a diameter of 54 mm were prepared...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-655
... mine workings. The project evaluation considered numerous factors influencing mine safety, operations and economics. This case study paper will describe the geomechanical aspects of the project evaluation and execution. 1. INTRODUCTION The Santo Niño ore body is one of several mineralized zones...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-297
... into the enhanced P3D model. To assess the level of accuracy, the results are compared to a reference solution. The latter reference solution is calculated numerically using a fully planar hydraulic fracturing simulator (Implicit Level Set Algorithm (ILSA)), which also incorporates the asymptotic solution for tip...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7391
... that enable the study of characteristic lengths during damage and failure of such materials. Upstream Oil & Gas acoustic event geometry quasi-brittle material residual function procedure numerically Ripley characteristic length specimen aggregate damage event Lattice Model...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-453
... fracturing fracture process stress wave failure pattern fragmentation Upstream Oil & Gas strength heterogeneity stress wave amplitude stress WAVE PROPAGATION element size fracture pattern Simulation peak value fracture propagation numerically waveform Brazilian tensile test 1...
Proceedings Papers

Paper presented at the The 25th U.S. Symposium on Rock Mechanics (USRMS), June 25–27, 1984
Paper Number: ARMA-84-0792
... ABSTRACT ABSTRACT Chip formation in rock under a line load and in front of a drag bit cutter is numerically investigated. Analysis is accomplished by a special purpose interactive graphics finite element code, SICRAP, written for the simulation of mixed mode crack propagation under linear...
Proceedings Papers

Paper presented at the 19th U.S. Symposium on Rock Mechanics (USRMS), May 1–3, 1978
Paper Number: ARMA-78-0592
... constrained in a rigid cavity, for example in an underground shelter, and subjected to outside explosions. The purpose of this paper is to establish a stability criteria which used with the energy method and the numerical integration of the asymptotic nonlinear equations of the shell permits to obtain...

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