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Keywords: variation
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-024
... AMF. structural geology strength specimen reservoir geomechanics maximum value reservoir characterization upstream oil & gas variation strength criteria drilling operation orientation plane tectonic fabric anisotropy weakness plane tectonised rockmass deformation kpa...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-087
... allows researchers to go deeper into the details of the microcracking process in extreme ruptures. For example, laser techniques in experiments on transparent brittle polymethyl methacrylate (PMMA) specimens allowed visualizing the variation in contact area and interface slip associated with...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-010
... freezing for mine shaft construction. Reservoir Characterization pipeline application saturation frost heave freezing unfrozen state mechanical behaviour compressibility coefficient variation unfrozen water saturation procedia engineering 191 haxaire Upstream Oil & Gas solid phase...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-047
... REV is varied by changing the number or the radii of the embedded inclusions. As a first result, the two homogenization techniques are compared with reference to proximity to the numerical results. Moreover, it was noticed that the curves presenting the variation of effective bulk modulus with respect...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-104
... network of permeable fractures between injection and production wells. Reservoir Characterization heat exchanger area calibration geothermal reservoir Simulation simulator numerical simulation hydraulic fracturing enhanced geothermal reservoir variation operational parameter procedia...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-041
... propagation were influenced by anisotropic feature. A new source locating technique that is capable of dealing with anisotropy was developed in this study based on partition approximation method. Cracking behavior as well as variation of mechanical properties of the samples could be experimentally...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-066
... Sutcliffe prediction footing collapse movement inclination angle weak plane bearing capacity geomaterial friction angle variation plane foundation rock mass shallow foundation anisotropy Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-027
... properties, and data on heterogeneity and anisotropy reflect variations in rock fabric and composition that also drive the variability of geomechanical properties. Observed correlations between the rock thermal and geomechanical properties confirm that. 1 INTRODUCTION Reliable data on rock thermal...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-037
... latter case, it is desirable that permeability tests are conducted in calm surrounding environment without temperature variation and vibration in order to evaluate the hydraulic constants (hydraulic conduc- tivity and specific storage) of low permeability rocks such as granite and shale. Temperature...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-038
... brine concentrations; 10, 20 and 25% NaCl at 04 saturation levels; 25, 50, 75 and 100 Findings indicate reducing trend of siltstone s mechanical strength with increasing degree of saturation and an inverted U-shaped variation of siltstone s strength with increasing NaCl concentration. 1 INTRODUCTION...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-014
... of Russian Academy of Sciences, Moscow, Russia ABSTRACT: Regularities of transforming different shear deformation regimes of a gouge-filled fault were investigated in laboratory at a slider model. It is shown that slight variations of material content, which have negligible effect on fault shear...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-024
... Faculty, I stanbul University, I stanbul, Turkey F. Amann & M. Perras Engineering Geology, Institute of Geology, Swiss Federal Institute of Technology, Zurich, Switzerland ABSTRACT: The geomechanical properties of limestones often show substantial variations which are associ- ated with differences in the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-054
... obviously change with the angles between foliation and loading direction. Additionally, the measured strains at the specimens reaching peak stress, i.e., the failure strain, are in the range of 0.10–0.45%, with obvious variation in Young's modulus of these specimens, revealing significantly anisotropic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-141
... of chalk in underground quarries in the Parisian Basin, France. The dolomitic chalk (Saint-Martin-Le-N ud) exhibits variations in mechanical and physical properties with horizontal pillar depth, and both density and compressive strength appear to increase outwards from the core to the wall of the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-166
... sur- face are recorded simultaneously. It is noted that the relative humidity variations at 1 mm above the top sur- face are quite good agreement with the drying-induced deformation behavior (Ohtake & Osada 2014). 3 TEST RESULTS In the following, a convention was adopted that shrink- age strain is...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-173
... (DFN) simulation results show some of the equations are suitable for calculation of mean trace length and the difference between actual value and their values is less than 15%. Apparent density is dependent on scale, but the Mauldon s estimators are independent of scale despite the variation in...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-139
... 20 degrees to +38 degrees. The hottest month is July while the coldest month is February. Rainfalls are observed in spring and autumn and snow fall is observed during November till March remains on the ground till the end of the march (Fig. 8). Figure 9 shows the tempera- ture variation of rocks at...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-164
... variation operation excavation storage permeability Rutqvist air tightness rock mass Energy Storage 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 Pilot test of compressed air storage in...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-199
... numerical modelling is currently under development for geomechanical and modal analysis of the site. Both spectral analysis and cross-correlation of seismic noise showed seasonal reversible variations related to temperature fluctuations. No irreversible changes, resulting from serious damage processes, were...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-193
... rainfall Engineering variation Turkey Aydan Upstream Oil & Gas museum Cappadocia Region investigation pioneering monitoring attempt acoustic emission electric potential stress measurement Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor...

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