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Keywords: triaxial compression
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1222
.... In this study, a series of triaxial compression tests were performed to investigate fracturing in cylindrical specimens of rock containing an inner diameter of backfill (referred to as RB). Stress-strain results showed a very unique post-peak stress-strain behavior due to progressive shear and tensile...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1612
... dependence triaxial confinement triaxial compression impact velocity deformation stress-strain curve 1. INTRODUCTION Mechanical properties of rock material and rock mass under dynamic loads are significant parameters in rock structures (e.g. underground tunnels, cavities and mining roadways) design...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-402
... & Gas Harrison complex reservoir dilation zone triaxial compression reservoir geomechanics strength Rock mechanics international journal Mining Science shale gas volumetric strain dilation angle porosity partition shale specimen dilatancy dilation dilatancy index specimen compression...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-620
... material constants, such as one stress intercept and two friction angles, one for compression ? c and one for extension ? e , are readily identified. PMC failure criterion is reviewed and data from a series of conventional triaxial compression and extension experiments on Indiana limestone...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7192
... Abstract In this paper we apply to intact rock the four-parameter polyaxial criterion originally proposed by Ottosen [1] for modelling the peak strength of concrete. The Ottosen criterion is fitted to strength data at both the triaxial compression and triaxial extension stress states, and we...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-561
... 1. INTRODUCTION ABSTRACT: Because rock is typically sampled in the form of a right circular cylinder, it is convenient from a laboratory testing perspective to produce failure by the application of an axi-symmetric state of stress called triaxial compression, where the major principal stress...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-211
... experimental approach Upstream Oil & Gas diameter coal Artificial Intelligence triaxial compression damage evolution cylinder mesoscale fracture experiment uniaxial compression coal sample experimental result University compression collision 1. INTRODUCTION There are many disasters...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-228
... triaxial compression deviatoric stress stress value acoustic emission sandstone Sci Reservoir Characterization axial stress crack initiation stress threshold Rock Mech int crack initiation deviatoric axial stress initiation specimen AE count 1. INTRODUCTION Heterogeneity is an inevitable...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-135
... Upstream Oil & Gas pore pressure stress-dependent permeability permeability change Reservoir Characterization flow in porous media Sequestration triaxial compression carbonate rock effective stress fracture permeability variation co 2 pressure buildup pore pressure buildup...
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-05-742
... a diameter of 10 cm and a length of 20 cm. These types of tests impose confining pressure acting on the circumference of the specimen and compressive axial stress acting on the specimen faces. The tests at a Lode angle of +30o are termed triaxial compression because the specimen shortens and the tests...
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-05-734
... developed criterion includes the Lode angle in addition to the two aforementioned stress invariants in its formulation. The addition of the Lode angle is significant because laboratory tests show that salt dilates at lower shear stresses in triaxial extension than it does in triaxial compression...
Proceedings Papers

Paper presented at the The 34th U.S. Symposium on Rock Mechanics (USRMS), June 28–30, 1993
Paper Number: ARMA-93-0415
... & Gas triaxial compression hypocenter distribution ultimate fracture Reservoir Characterization accuracy fracture plane specimen fractal dimension AE activity variation experiment rockburst THE VARIATION OF HYPOCENTER DISTRIBUTION OF ACOUSTIC EMISSION IN COAL DURING TRIAXIAL COMPRESSION...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-951
... strength criteria MC criterion intermediate principal stress stress analysis axial stress triaxial compression plastic radius loading closure principal stress Strength Criterion wellbore Rock Mechanics as a Multtdtsctpltnary Soence, Roegiers (ed ) ¸ 1991 Balkema, Rotterdam ISBN906191 194X 3D...
Proceedings Papers

Paper presented at the The 29th U.S. Symposium on Rock Mechanics (USRMS), June 13–15, 1988
Paper Number: ARMA-88-0035
... the need for testing where the principal stresses are unique. 1 INTRODUCTION Laboratory tests on rocks and soils typically involve stress states in which two of the principal Stresses are equal, such as uniaxial compression, triaxial compression, and triaxial extension. One-dimensional (scalar...
Proceedings Papers

Paper presented at the The 10th U.S. Symposium on Rock Mechanics (USRMS), May 20–22, 1968
Paper Number: ARMA-68-0409
... Reservoir Characterization size effect triaxial compression specimen reservoir geomechanics specimen size strength failure Bieniawski compression hydraulic fracturing hard rock brittle fracture propagation fracture propagation stress level fracture initiation soft rock fracture Chapter...
Proceedings Papers

Paper presented at the The 8th U.S. Symposium on Rock Mechanics (USRMS), September 15–17, 1966
Paper Number: ARMA-66-0082
... strength triaxial compression lithostatic pressure compression failure mechanism Upstream Oil & Gas principal effective stress differential stress Solenhofen limestone stress-strain curve structural geology brittle failure extension Handin fracture Chapter 3 THE INFLUENCE...
Proceedings Papers

Paper presented at the The 4th U.S. Symposium on Rock Mechanics (USRMS), March 30–April 1, 1961
Paper Number: ARMA-61-073
... Abstract A theory describing the mechanism of triaxial behavior of rocks in underground formations is developed for the purpose of analyzing underground stress conditions. A phenomenon of an abrupt transition from elastic to plastic states of rocks under triaxial compression is anticipated...

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