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Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-196
... and variable parameters, among others water pressure and earthquake activities were considered. Different scenarios from the best to the worst-case were analysed and later compared. The sensitivity analysis revealed the importance of the joint failure plane, joint roughness coefficient and joint friction angle...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-046
... length plays a role in different parameters used to describe rock mass behavior in a quantitative way. The first and most common one is persistence. In 1978, the ISRM commission [1] defined persistence as the areal extent or size of a discontinuity within a plane. Persistence can be crudely quantified...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-131
... rock engineering theory geological subdiscipline stability strength excavation plane exploitation metals & mining practice iop publishing iop conf backfill quarry displacement Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-060
... joint roughness. europe government environmental science 833 photograph geologist artificial intelligence roughness geology coefficient theory photogrammetry rock engineering practice iop publishing iop conf jrc coefficient applicability orientation template rock mech plane...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-005
.... At the laboratory scale, the elastic symmetry can be represented by the transverse isotropy, with the lowest elastic modulus perpendicular to the plane of aligned microcracks. These issues are discussed with reference to experimental data obtained for two gneisses of the same geological formation. The gneisses show...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-019
... characterization melange practice iop publishing iop conf matrix geomaterial strength health & medicine geological subdiscipline environmental science 833 theory upstream oil & gas rock type reservoir geomechanics rock engineering melange specimen plane heterogeneous specimen weakness...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-024
... gouges as intact rock, and (ii) considering the fault gouge as tectonised rockmass. Both working hypotheses are consistent, reaching maximum values of resistance when axial load (σ 1 ) is applied perpendicular to the foliated planes of the gouge, decreasing for lower angles with the anisotropy planes...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-033
... and solutions (TBM, Mechanical and D&B) in sedimentary rocks. reservoir characterization upstream oil & gas support design structural geology rockmass metals & mining strength weakness plane rock strength reservoir geomechanics rock mechanics bedding sandstone stability tunnel...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-035
... discontinuities, like bedding planes, joints or cracks, represent the weak zones, which separate singular polyhedrons of competent rock blocks and control failure mechanisms. Furthermore, discontinuities influence the mechanical properties and the behavior of rock masses. Geotechnical engineers traditionally...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-037
.... In this paper we consider transverse crack formation on borehole wall in a given plane when the fracture initiation occurs due to an indenter impression located between two inflatable packers. During indentation fracturing, fluid under high pressure is supplied and this contributes to crack propagation...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-115
... metamorphic foliation wellbore integrity orientation plane evaluation fracture surface Abstract Most rocks in nature are affected by a certain degree of anisotropy. They contain cracks mostly with certain distributions. Therefore their mechanical behaviour is dependent on the direction...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-051
... the actual occurrence of instability toppling phenomena in rock slopes. 1.1. Brief description of the quarry and mined stone Artificial Intelligence Alejano weakness plane procedia engineering 191 metals & mining orientation quarry representation Reservoir Characterization hardway...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-176
... machine learning Artificial Intelligence Reservoir Characterization persistence metals & mining reservoir geomechanics calculation information geomechanical parameter discontinuity rock mass acquisition orientation smr index smrtool fieldwork plane riquelme software...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-183
... about a discontinuity network and are prone to human bias. To increase the reliability of discontinuity models, digital mapping techniques using data from remote sensing, like Close-Range Terrestrial Digital Photogrammetry, were developed. This paper focuses on the plane identification within 3-D point...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-185
... and the variation of rock conditions in the foundation, the major design unknowns were the spatial distribution of deformability and joints shear strength in the area of interest; for the latter it was determined that the bedding planes must be studied in detail because their geometrical situation and continuity...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-016
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Tensile strength anisotropy of Pocheon granite and roughness evaluation of its failure planes M.B. Diaz & S.G. Jung University of Science...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-066
... ABSTRACT: The effects of strength anisotropy of rock masses on bearing capacity of shallow foundations are the focus of this paper. The source of the strength anisotropy can be attributed to many factors and the motivation of this study is to concentrate on the effects of planes of weakness...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-106
... that potential mechanism both of wedge failure and plane failure could occur. In Figure 7a it is possible to observe that the inter- section points of the three families of discontinuities, falls back in the critical zone. Figure 7b describes the probability of kinematic mechanism occurrence for planar...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-091
... Oil & Gas wedge Artificial Intelligence outcrop plane discontinuity surface intersection point discontinuity rock mass Visualization kde metals & mining Kernel Density Estimation Intersection Line rock slope application instability engineering structure Modeling study...

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