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Keywords: compression
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Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-113
... geology geological subdiscipline practice iop publishing iop conf fragmentation survival probability compression survival probability rock engineering poisson theory united states government probability environmental science 833 equation 4 mortar geologist reservoir geomechanics...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-048
... between plates 2 of the hydraulic press, in tray 3, to preserve the cell shape under loading. The vertical compression was carried out under the step-wise increase in the stress m monitored by the pressure in the hydraulic cylinder. At each step m of loading, a seepage test was performed: the constant...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-031
... Abstract In this paper, a numerical investigation of uniaxial compressive tests on prismatic specimens with single cylindrical pre-existing cavities in brittle rock is performed. To investigate the rock fracture around cavities and to assess the potential of the numerical model to simulate...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-041
... Abstract The paper describes the investigation results on specific strain energy in hard rocks (urtite, ijolite and apatite-nepheline ore) under uniaxial compression, tension and triaxial compression. The ways of strain energy accumulation have been shown in the investigated rock samples under...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-065
... Abstract Based on laboratory testing of bedded specimens made of artificial geomaterial, meta-siltstone and schist subjected to uniaxial compression and triaxial compression by the Karman scheme, the deformation and strength characteristics of the materials are determined as functions...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-043
..., z of laboratory system, what is important for anisotropic samples, 2. intermediate principal stress is considerably different, i.e. minimal for CTC and maximal for CTE. We remember that name of both tests (Compression/Extension) are related to compressional or extensional response...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-044
.... reservoir geomechanics Rock mechanics extension compression Reservoir Characterization Triaxial Testing specimen intermediate principal stress ivan jane�ek procedia engineering 191 laboratory triaxial testing sandstone stress difference stress path Upstream Oil & Gas amban mishra...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-117
... Abstract According to the results of compression experiments on different types of sylvinite and rock salt samples, it has been established that the second-class scale effect is basic for quasi-plastic saliferous rocks; the effect mechanism is based on a destructive high-plastic surface layer...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-099
... to the unconfined compressive strength of the soil/rock ( q u ) using empirical constants, usually denoted α, β and c as Upstream Oil & Gas independent loading load-deflection curve structural geology load-settlement curve loading Reservoir Characterization numerical analysis socket length...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-148
... simulation code to predict the hydraulic behaviors of 926 Figure 9. Upper graphs: Pore pressure evolution during water curtain compression at measurement section B. Each measured pore pressure (blue line) is satisfactory with the estimated criterion (pink line) by 3D heterogeneous groundwater simulation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-040
... is subjected to triaxial compression, and then methods suggested by the ISRM, the national standard and the conventional method are used respectively to determine Poisson s ratio. The differences among these methods are carefully identified. In the light of the elasto-plastic constitutive equation for rocks...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-012
...: To investigate the failure of non-continuous jointed rocks under compression loading, many researchers have performed uniaxial and biaxial compression tests. In this paper, I simulated numerically the behavior of artificial jointed rock under axial loading and compared it with laboratory experiments.The...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-002
... compression Simulation crack propagation scheme brittle rock Continuum model setup voronoi body distribution function 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 Micromechanical rock models H...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-064
... ABSTRACT: This paper attempts to provide a theoretical framework for the determination of the stress state induced in a hollow cylinder (ring) under Hertzian compressions on its outer boundary. The solution is obtained using Airy stress functions, Michell-Fourier series expansions and Fourier...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-125
... ABSTRACT: This paper presents static and dynamic experimental characterization of quartzite rock subjected to static unconfined compressive strength test and dynamic split Hopkinson pressure bar (SHPB) tests. The dynamic compression tests on rock samples are performed at strain rates from 10...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-118
... of Dionyssos marble specimens under uniaxial compression (Karatza et al. 2012). However, more computational effort and extended calibration procedures are normally required to match the macroscopic rock behavior with the GBM. With the recent addition of the flat-joint contact logic in the BPM (Potyondy 2012...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-130
... loading and a Rankine yield surface Ft in the tensile regime (Fig. 1). In this study constant values of max = 37 and = 0 are employed. Strain hardening in compression follows a quadratic function up to the peak strength, with subsequent bi- linear softening (Fig. 2). Due to the time dependency...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-135
... hydraulic fracturing strength initiation reservoir geomechanics Einstein mechanism tensile crack Upstream Oil & Gas criterion crack growth Reservoir Characterization fracture loading condition crack initiation element method cohesive zone model specimen compression...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-231
... of the study was to perform a series of geomechanical tests of rock chips and plugs belonging to the target formations outcrop- ping nearby the prospect area. The tests can be divided into 3 main categories: a) Strength tests. 15 unconfined compression (UCS) and 26 confined compression (CCS) tests were...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-026
... Abstract This paper aims to apply intelligent tools such as artificial neural networks, support vector machines and multiple regression to forecast the main parameters characterizing the compressive behavior of granites, namely the resistance under compression, fc , the crack initiation...

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