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Keywords: stereonet
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0692
... be laser or camera; [b] computing facets and facet normals form point clouds for stereonet presentation and geometric analysis of block dimension; [c] extract rock mass discontinuities from stereonet data to analyze key blocks, assess discontinuous deformation analysis (DDA) behavior, and model rock slope...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0265
... are discussed and presented for a site in Pennsylvania. An analysis first begins with discontinuity mapping. In this study, quarry walls were mapped, and observations of active slope failures were made. The data collected were plotted on stereonets for cluster and kinematic analyses, which identified several...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0901
... logging machine learning open fracture hydraulic aperture well-1 fracture aperture aperture ahnet basin stereonet natural fracture electrofacies mean hydraulic aperture tight gas reservoir hra unit cluster analysis natural open fracture ARMA 23 0901 Characterization of a Tight Gas...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0198
... of the slope. Mountainous slopes are large and are sinuous in terms of sloping direction. criticality discontinuity homogeneous zone determination planar reservoir characterization discontinuity orientation approach rahman niyogi lithology envelop karchham stereonet orientation continuous...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1148
... reservoir vicinity conductive fracture hydraulic fracturing orientation natural fracture reservoir characterization upstream oil & gas fracture spatial orientation stress state rock mass fracture cosine horizontal stress stereonet stress concentration coordinate system azimuth stress...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-864
... stress condition stereonet stress field mining step axis model 6 ARMA 18 864 Seismic calibration of in situ stress at Williams mine Rebuli, D.B. Institute of Mine Seismology, Sudbury, ON, Canada Malovichko, D. Institute of Mine Seismology, Hobart, TAS, Australia Conley, A. Barrick -Hemlo...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-588
... analysis. Stereonets are widely used to carry out kinematic analysis for rock slopes. The stereonet-based method provides qualitative solutions and is dependent on the presence of tight clusters of discontinuities for which representative orientation values can be assigned. In addition, the stereonet-based...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-368
... photogrammetric model result Upstream Oil & Gas rock massif discontinuity mapping exploratory tunnel transformer bay stereonet photogrammetry boundary dam discontinuity transformer bank rockfall mitigation project ARMA 12-368 Comparison of Standard Structural Mapping Results to 3-D...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-008
... recommend a slope with a FOS of less than 1.0 is acceptable, the process by which FOS is calculated needs to be understood. Upstream Oil & Gas strength geological structure Engineering slope design probabilistic slope design persistence stability analysis variability stereonet metals...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-249
... Polywork image composite stereonet manual measurement 1. INTRODUCTION Rock mass characterization is an essential component in the design of safe underground excavations. Several classification methods exist but the Rock Mass Rating (RMR) system is the most widely used. This classification system...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-1046
... then plotted in a stereographic projection program (DIPS® by Rocscience) to evaluate trends and representative geometric structures in the rock mass. The representative discontinuity planes defined by the stereographic projection were then plotted on a total area stereonet and block theory criteria applied...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-877
... Reservoir Characterization machine learning solid waste management Rock mechanics dimensional version Multivariate fracture characterization roughness frequency distribution stereonet Artificial Intelligence orientation Yucca Mountain Project ecrb cross drift discontinuity...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0861
... machine learning roughness parameter average vector dip angle dip direction orientation weighting factor tabular output stereonet Multivariate Artificial Intelligence Upstream Oil & Gas discontinuity data borehole sub-vertical discontinuity discontinuity application...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0431
... on orientation and spatial position (spacing) along the bore hole, and to display the data in a three dimensional stereonet. Although drift or surface exposure mapping data allows better characterization of discontinuities, bore hole data is often more readily available, because of lower costs. In addition, bore...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-1083
.... Traditionally, stereographic projection techniques are used in which field data are plotted on the lower hemisphere of an equal area stereonet. Their evolution has been reviewed by Matheson (1989). 3.1. Traditional Methods Early methods of presentation (Hoek and Bray, 1977; Matheson, 1983a) are tedious and time...
Proceedings Papers

Paper presented at the The 24th U.S. Symposium on Rock Mechanics (USRMS), June 20–23, 1983
Paper Number: ARMA-83-0807
... to allow discontinuity set orientations to be determined by graphical constructions on an equal-angle stereonet. Consider the case where the spacing and alpha values are logged for each discontinuity set (level 2). As presented by Goodman (1976), the orientation or axis of the borehole can first be plotted...

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