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Keywords: shear stiffness
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1955
...; French et al., 2016; Leeman et al., 2016; Scuderi et al., 2017; Scuderi and Collettini, 2018, Cappa et al., 2019; Im et al., 2020; Wang et al., 2020a, 2020b). The experimental system has also evolved from simple two-axis mechanical control and measurements to the coupling with controlled shear stiffness...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1566
... on the consolidated specimens at nominal normal stresses of 500, 1000, and 1500 psi. The tests included pre- and post-failure measurement of normal and shear stiffness. The resulting peak shear stress failure envelope had a friction angle of 9 degrees (coefficient of friction of 0.16) and cohesion of 125 psi when...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0322
... on HF stimulation results. NFNs are characterized by geometric properties (including spatial distribution, length, and height) and mechanical properties (including tensile strength, cohesive strength, and shear stiffness). This paper explicitly represents NFNs in a validated, state-of-the-art geo...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0429
... management strength rock bolt Artificial Intelligence Simulation excavation rock bolt model Reservoir Characterization displacement shear stiffness shear test rock mass tunnel deformation smooth-joint model normal stiffness bolt body Upstream Oil & Gas inward displacement rock bolt...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1177
... amplitude and wave velocity variations were observed to be negligible during steady state sliding. With this, during stick slip cycles, the trends were clearly observed to follow the stick-slip behavior. friction particle specimen shear stress Upstream Oil & Gas variation shear stiffness...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0075
... sliding to rolling, both of which may largely reduce the rock shear resistance. The experimental results show that there is a large decrease on both rock peak shear strength and shear stiffness with addition of proppant. The rock with reducing shear resistance has less ability to resist the horizontal...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0224
... reservoir geomechanics strength shear stiffness Arbuckle Group fracture Upstream Oil & Gas fracture property compression test Reservoir Characterization shear strength stiffness anisotropy parameter wave speed envelope compression laboratory geomechanical characterization 1...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-041
... by the parameters of smooth joint including friction coefficient, normal stiffness, and shear stiffness. The friction coefficient is found to have the most significant impact on the macro properties including yield strength, Young's modulus, and Poisson's ratio. A reduction in friction coefficient significantly...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-536
... individual smooth joint (SJ) contacts with same orientation into the rock matrix. The properties of a SJ contact include normal and shear stiffness, normal strength, cohesion, and friction angle. A systematic study is conducted to investigate the influence of these parameters on the macro behaviors...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7537
... go deeper, intrablock structure has been found to have a significant impact on rockmass behaviour. Complex numerical modelling for modern geotechnical design requires input parameters for structure, including normal and shear stiffness, and strength, which have a critical influence on modelled...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-452
... evaluation on the reinforcement effect has not been established. In this study, the shear bond strength and the shear stiffness of typical FRP grids are estimated by conducting direct shear test. Those parameters were input into a numerical model of tunnel to quantitatively estimate the displacement control...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-535
... changes at seismic, sonic, and ultrasonic frequencies. Upstream Oil & Gas shear stiffness Gassmann model dependence ultrasonic velocity shale rock physics model acoustic velocity interaction linear temperature dependence temperature sensitivity rock-fluid interaction rock physics...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-293
... stress, which is a modification of the Goodman’s model. The stress dependent shear stiffness in fractured rocks is modeled as a linear function of normal stress based on experimental data. This empirical relationship is compared with extensive measurements of the normal compliance C obtained by Malama...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-651
... Element Method (FEM/DEM) as tool to perform numerical direct shear tests. Direct shear models of a 400 mm long joint and 200, 100, and 50 mm subdivisions thereof are constructed and numerical direct shear testing is performed. The results show that the relative influence of scale on shear stiffness...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-576
... related to shear stiffness and normal stiffness of fractures is initiated experimentally under uniaxial stress condition using FRAME STAND model 37-5570(CT-713A). An additional coefficient of fitting parameter n has also been introduced to model the experimental data. The developed models...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-717
... integrity Wellbore Design particle laboratory Upstream Oil & Gas strength GPa Simulation shear stiffness Wang mechanical property shear strength University MPa Oklahoma particle size distribution procedure stiffness Magnitude Antler sandstone discrete element method 1...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-1095
... rocks was adopted and implemented. The model for bedded rock is based on the constitutive model for jointed rock mass suggested by Amadei and Goodman (l98Ia); it takes into consideration the bed thickness, as well as the joint normal and shear stiffness. The numerical results obtained are compared...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0083
... properties including normal and shear stiffness of natural rock joints. In addition, a field investigation method is also proposed to identify the joint geometry in a rock mass. Finally, these methods are applied to determine the input data for DEM(distinct element method) analysis while carrying out...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0415
... is applied instead of the joint element method. In this study, focus is placed on the mechanical parameters, normal stiffness kn and shear stiffness ks. The relationship of kn and ks, (Goodman 1984) is measured in this study by constant t/ó loading tests. Then, the results are used to determine the material...
Proceedings Papers

Paper presented at the The 26th U.S. Symposium on Rock Mechanics (USRMS), June 26–28, 1985
Paper Number: ARMA-85-0515-1
... of the matrix and joint compliances. (mathematical equation)(available in full paper) Upstream Oil & Gas joint model shear stiffness matrix stress-strain response compliance Albuquerque dispersion orientation laboratory stress-strain behavior discontinuity sandia national laboratory...

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