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Keywords: axial strain
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Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-232
... to plastic shear strain. This angle is typically determined from triaxial tests or shear box tests. Vermeer and de Borst (1984) gave a bilinear graph of a triaxial test and a plot of volumetric strain ( v) versus axial strain ( a or 1) in order to derive the formula for calculating the dilation angle...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-111
... social infrastructure is located near such a slope, observations must be made in order to maintain the facilities and the necessity for countermeasures must be examined. Upstream Oil & Gas axial strain inclinometer fbg optical fiber sensor Reservoir Characterization maximum axial strain...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-091
... sylvinite lateral pressure reservoir geomechanics strength axial strain Reservoir Characterization triaxial compression test carnallite tangent modulus motley sylvinite sample deformation Wellbore Design salt sample elasticity salt rock compression test compressive strength stress-strain...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-114
... behavior that is specific to the stress range above the threshold of absolute dilatancy. The model uses two material parameters: Poisson's ratio and the dilatancy angle. The values of these parameters were determined based on both the relationship between volumetric strain and axial strain...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-019
... & Gas axial strain diameter extrusion lunardi Reservoir Characterization radial displacement convergence excavation tunnel Cantieni deformation Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 A theoretical...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-115
... and initial deformation modulus, all decrease with weathering. In the first three grades of weathering the stiffness of the sample increases with deformation while the opposite occurs for grade IV. The maximum axial strain at rupture increases proportionally with weathering, presenting a low variation...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-131
... strain gauges. The experimental test results revealed that deformational properties of the rocks investigated varied depending on their petrographic features. However, the axial strain and the lateral strain characteristics showed a similar trend for all the rocks, i.e. the stress-strain curves were non...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-093
... and Villaescusa 2 cores sampled from depth 70 days previously still displayed the effect. Upstream Oil & Gas Rock mechanics axial strain Reservoir Characterization microcrack inflection point reservoir geomechanics maximum in-situ stress particle axial stress calibration test specimen lrr...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-014
... (Aydan et al. 2001, 2002 and Aydan & Daido 2002). This study is a further contribution to the understanding of the electric potential induced by deformation, fracturing and sliding of non-piezoelectric geomaterials. Reservoir Characterization displacement axial strain Turkey seismic...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-005
... Reservoir Characterization shear band propagation displacement cohesion specimen localization discontinuity experimental result numerical simulation soft rock deformation propagation axial strain relative displacement mechanics 23 Allodi A., Castelli M., Marello S., Scavia C. Shear band...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-118
... central Italy, known as "tufo di Riano". Upstream Oil & Gas Geotechnique specimen Reservoir Characterization controller structural engineering compression test strain measurement tuff Engineering axial strain characteristic cividini volcanic rock stress-strain curve mechanical...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-153
... fractures. metrical and material properties of joints, groundwater conditions. hydraulic fracturing strength specimen Reservoir Characterization Fluid Dynamics flow rate excavation rock mass flow in porous media rock sample aperture axial strain loading rock specimen Upstream Oil...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-064
... in this article. All samples were aged at 50 bars for one week. The specially designed creep cell was self-contained with a built in piston to apply axial force on the specimen. drilling fluids and materials wellbore integrity test number 1324 Load Step shale-fluid interaction axial strain reservoir...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-222
... ABSTRACT: The stiffness of sedimentary soft rocks was evaluated by consolidated drained and undrained triaxial compression tests on core samples. The stiffness values obtained from axial strains of 0.0001% ~ several % measured with a local gauge are consistent with those obtained from field...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-057
... drilling fluid management & disposal gonflement axial strain Reservoir Characterization Upstream Oil & Gas potentiel drilling fluids and materials swell test gypsum schweiz mineral specimen anhydrite clay fraction texture mineralogy clay-sulfate rock Madsen structural...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-112
... Wellbore Design structural geology consolidation Reservoir Characterization Upstream Oil & Gas pore pressure wellbore integrity monjoie testing procedure pore collapse interpretation axial strain waal time-dependent behaviour uniaxial test chalk diagram deformation chalk...
Proceedings Papers

Paper presented at the 6th ISRM Congress, August 30–September 3, 1987
Paper Number: ISRM-6CONGRESS-1987-043
... (ISRM) (Bieniawski co-ord 1978), Canada Centre for Mineral and Energy Technology (CANMET) (Gyenge & Herget 1977) and American Society for Testing and Materials (ASTM) (1980). In these methods the modulus of elasticity, which is the slope of the plot of axial stress against axial strain, may...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-196
... size increases the strength and decreases the axial strain at failure and crushing of particles. The study also showed that crushed basalt, sheared under plane strain conditions, indicated higher strength than that tested under triaxial compression. RESUME: Plusieurs essais de compression triaxiale...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-046
... & Gas drilling fluid selection and formulation drilling fluid formulation drilling fluid chemistry drilling fluids and materials water content biaxial test end platen axial strain shear resistance strain rate Reservoir Characterization Wellbore Design test specimen end plane specimen...
Proceedings Papers

Paper presented at the 1st ISRM Congress, September 25–October 1, 1966
Paper Number: ISRM-1CONGRESS-1966-143
... peak point unit deformation axial strain internal friction Upstream Oil & Gas wedge cohesion shear resistance stress circle stress-strain relationship peak strength drilling operation axial deformation penetration resistance triaxial test envelope curve resistance normal...

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