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Keywords: orientation
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-057
... operator. The main rock mass characteristics considered to predict fragmentation from rock blasting (i.e. discontinuities' orientation and spacing) are obtained from each of these tools. Discontinuities' spacing has been assessed in photogrammetry models along a dense set of scanlines oriented in four...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-008
... deposition hole would fulfil the plane-strain conditions. 3D numerical stress analysis using Itasca's FLAC3D code was conducted to evaluate compliance of the stresses around the deposition hole with the Kirsch solution, varying Poisson's ratio and the stress field orientation relative to the deposition...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-024
... consolidated-undrained triaxial tests (CU) performed under low confining pressure (50, 150 and 300 kPa) to several sets of core specimens carved with different orientation of the tectonic fabric. We analyse strain-stress relationships of each test, as well as failure modes, obtaining a brittle behaviour at...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-056
... for semi-automatic measurements of fracture orientations. In addition, a digital twin of the tunnel section with photorealistic surface texture is created and implemented into virtual reality (VR) system – Virtual Underground Training Environment (VUTE) developed for training of rock mass...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-131
... models has been investigated between both the ubiquitous joint model and Cosserat model [4]. This paper adopts the continuum-based approach to implicitly model an isotropic rock mass (i.e.: smeared joints). reservoir geomechanics stiffness anisotropy orientation analytical solution elastic...
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...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-091
... geotechnical characterization moldanubicum bukov urf mechanical property determination underground research facility bukov underground research facility orientation strážek moldanubicum procedia engineering 191 sou�ek deformation Procedia Engineering 191 ( 2017 ) 711 718 Available online at...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-014
... solutions for slopes stability of roads and the parts of hydropower objects (dam power house), have performed a significant amount of field and laboratory tests. On site testing included: quantitative description of discontinuities in rock masses; orientation, spacing, persistence, roughness, edge strength...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-035
... reproducible [1, 2]. Reservoir Characterization calculation plane normal vector Upstream Oil & Gas wulf schubert procedia engineering 191 smx analyst orientation rock face DSE Artificial Intelligence point cloud trace length manual mapping deviation discontinuity rock mass...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-105
... corresponding equivalent aperture of the fracture were evaluated. Required breakdown pressures by hydrofracturing and hydroshearing mechanisms were estimated based on the various scenarios on the in-situ stress condition, major fracture zone orientation and shear failure criteria. 1. Introduction 1.1...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-115
... directions in which the rock is relatively firm and conversely the directions in which it is weak. The strength anisotropy and the direction of weakening is useful information for engineering applications. Metamorphic foliation with the specific orientation of rock grains also influences the mechanical...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-125
... usually laminated. In order to get an insight into the influence of different lamination factors on size effect, cubic rock specimens with different sizes, stress directions, lamination orientations and lamination spacing were tested under true tri-axial conditions with 3DEC. The results show that regular...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-112
... Abstract The relative orientation of foliation or closely spaced bedding has an important influence on the behavior of underground structures. Not only the potential failure mode is controlled by the relative orientation between underground opening and foliation strike, but also the...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-069
... on local in situ stress measurement data. hydraulic fracturing Simulation Upstream Oil & Gas Harrison Reservoir Characterization orientation Rock mechanics procedia engineering 191 principal stress magnitude stress data Euclidean mean stress tensor finite-discrete element...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-059
... models is observed. Similar methods can now be applied to more complex geological materials, where anisotropy is more significant. 1. Introduction The goal of this contribution is to quantify the microstructure and particularly crystallographic preferred orientation (CPO) in serpentinate with modern...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-129
... fracturing pattern is required. DFN models are statistical models which define the density of fractures having given geometrical properties (size and orientation) and which include an intrinsic variability term. One of the main challenging task is to combine all available data. Data remain sparse and scarce...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-002
... grain and pore shape, size and orientation, but also on strength and deformability of grains and binder between grains. The paper gives an overview about different continuum and discontinuum based modelling strategies, which consider the above mentioned aspects at the grain size level. The developed...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-024
... analysis was focused on determining the orientation and distribution of micro- and macro-cracks that formed during compressive load- ing.. Data obtained from mechanical tests reveal that the UCS values for the studied limestones varies between 38 140 MPa, and cracks are initiated at stress levels between...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-095
... parameters. Dales Gorge Cohesion Friction Density Member Angle (kPa) (degrees) (kg/m3) BIF (Fresh-SW) 275 48 3200 Shaleband bedding 10 30 2300 Planar sliding along adversely oriented shale bands is the most common mode of slope instability from bench to overall slope scale in mining operations and also...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-107
... toppling failure (Fig. 22). Geological mapping in principle confirmed the joint sets and their orientation as shown in figure 6. However, the dipping of the inclined joints varied between dipping into and dipping out of the slope. The stability of the rock slope was investigated with the aid of finite...

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