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Keywords: normal stress
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Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-456
.... united states government metals & mining upstream oil & gas mineral geologist wellbore design reservoir characterization shear strength envelope veinlet normal stress stress cohesion geological subdiscipline barton practical estimation barton bandis criterion geology reservoir...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-152
... been performed. In the tests A and B, the same value of the spacing free of encapsulating material about the shear plane (s, s = 20 mm) is used for two different values of the normal stress = 141 or 564 kPa). In the tests A, C and D, three different values of the spacing (5, 20 or 30 mm) are considered...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-277
... of rock mass under a normal stress varying from 0 to 2.0 MPa. Concrete was used as a model material to simulate intact rock and, elemental blocks of size 150 mm x 150 mm x 150 mm were used to form the mass specimens. Steel bolts of 6 mm diameter with 2 mm thick grout were used to reinforce the mass. Three...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-310
..., numerical analysis was conducted using two dimensional particle flow code. geothermal reservoir 13th international congress structural geology Shear Characteristic Reservoir Characterization strength joint surface normal stress rock joint surface Montreal Upstream Oil & Gas...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-294
... sandstone (LS), shale/shale (SS), bone/bone (BB), bone/limestone (BL), and limestone/limestone (LL) were tested. The number of samples tested for each bedding plane were: SL- 11, SSs- 8, SB- 5, BB- 4, LS- 6, SS- 9, BL- 1, and LL- 2. Peak and residual shear strength values at 2.75 MPa normal stress range...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-140
... of concrete/rock joints subjected to various CNS loading conditions. The model has been found to accurately predict the dilation, normal stress and shear stress behaviour for a regular triangular saw-tooth joint up to the peak shear stress. Moreover, the peak shear stresses of concrete-rock joints...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-162
... samples (90 mm diameter and 50 mm height) are made by mixture of cement, sand, and water in the ratio of 1:1.5:0.45 (by weight). Direct shear tests are conducted on these samples in twelve directions at 30° apart at four different normal stresses (250kPa, 500kPa, 1000kPa, and 1500kPa). Thus, 48 samples...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-117
... velocity and shear history on the shear behavior of rock fractures. log analysis displacement residual stage well logging shear loop mechanical property shear test Upstream Oil & Gas normal stress shear velocity asperity shear velocity dependency friction angle deformational...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-349
... was the most likely failure mechanism associated with the orientation of the discontinuities. The shear strength of the discontinuities was analysed and the estimated maximum normal stress acting beneath the slope was determined. The empirical determination of shear strength allowed for the back calculation...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-077
... conditions, the effects of normal stress and normal stiffness on the contact area distribution were discussed. numerical method shear behavior plane shear displacement strength normal stress inactive element peak stage contact area Reservoir Characterization displacement rock joint contact...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-093
... lining coefficient mechanical behavior normal displacement displacement specimen MPa Upstream Oil & Gas water content callovo-oxfordian claystone-steel interface shear stress Reservoir Characterization normal stress Claystone claystone-steel interface shear test friction coefficient...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-144
... condition shear stress normal stiffness direct shear testing machine normal stress strength envelope different normal stiffness normal stiffness condition initial normal stress Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-158
... equation approximation rock beam normal stress discontinuity friction angle panek Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Simulation of laboratory tested bolted rock beams P. Yiouta-Mitra, N. Halakatevakis...
Proceedings Papers
Estimating the Basic Friction Angle of a Very Strong Meta-Sandstone for Rockfill Strength Prediction
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-130
... strength of the small scale surface asperities. Reservoir Characterization strength particle tensile crack Upstream Oil & Gas normal stress rock fill shear box test Wellbore Design Rock mechanics discontinuity BK model basic friction angle reservoir geomechanics Barton porosity...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-100
... stress surface height closure curve fracture Sakaguchi giwelli Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Effects of fracture size and normal stress on the shear behavior of a fracture as estimated by mortar...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-284
... normal stress newcrest mining shear strength metals & mining Rock mechanics Rock Slope Reinforcement rock mass shear pin strength discontinuity inclination installation relation plane open cut mining compression mechanics reinforcement scheme Harmonising Rock Engineering...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-209
... to reproduce the laboratory shear tests and to be applied for rock mass stability evaluation under cyclic loading. shear apparatus roughness geometry strength normal stress procedure Upstream Oil & Gas cyclic load discontinuity mechanical behaviour Rock Mech Reservoir Characterization...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-257
... reservoir geomechanics variation Stockholm SKB Reservoir Characterization diffusivity hydraulic conductivity hydraulic diffusivity repository permafrost pore pressure ice sheet Lönnqvist rock mass Upstream Oil & Gas fracture Sweden hydrostatic pressure normal stress HÃ...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-249
... ABSTRACT This paper presents a composite element algorithm of coupled Seepage and normal stress processes in fractured rock mass. "Filled model", which regards the asperities on the fracture as a layer of granular material having high porosity and clipped by the two parallel plates was used...
Proceedings Papers
Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-011
..., transmissivity and flow rate, with large shear displacements under different normal stress and stiffness conditions as measured during laboratory coupled shear-flow tests. Flow and tracer transport results shows that more realistic flowand transport phenomena/mechanismwere captured due to more proper treatment...
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