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Keywords: criterion
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Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-050
... to effectively model shale mechanical properties after interaction with drilling fluid filtrate. In this study shale swelling stresses were integrated into the prominent Mohr-Coulomb failure criterion and therefore a new form of this criterion has been introduced which combined the natural mechanical properties...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-057
..., as Mogi-Coulomb strength criterion can better describe the failure features of rocks under high geostress and rock micro-unit strength obeys the Weibull distribution, a new statistical damage constitutive model is established. Then, comparing the new model based on Mogi-Coulomb criterion with the Drucker...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-068
... & Gas Simulation structural geology criterion rock crack propagation loading fracture reservoir geomechanics node continuous-discontinuous cellular automaton method iteration crack propagation automaton cellular automaton increment propagation freedom compression Rock...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-058
... integrity at each location was evaluated considering two criteria. The first criterion is related to dilatancy of rock salt: the integrity is guaranteed if rock stresses do not exceed the dilatancy boundary. The second criterion is related to fluid pressure: the integrity is guaranteed if the hydrostatic...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-094
...-Coulomb criterion is generally used for simulating the fault slip because of simplicity of the equation and limitations of commercial software used for the analysis. Rock joints and faults encountered in underground mines are basically undulating and curved (Wallace & Morris 1986), and behaviour...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-012
... criterion, which neglects the role of σ 2 , predicting only the lower limit of rock strength for a given σ 3 . strength crystalline rock characteristic Upstream Oil & Gas variation specimen compressive strength Coconino sandstone principal stress Reservoir Characterization Triaxial...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-099
..., Li & Low 2010, among others, using elastic-perfectly-plastic model. This paper deals with more complex constitutive model, namely elastic-strain-softening model. Further investigations are conducted in the present study. Artificial Intelligence criterion coefficient Reservoir...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-096
... satisfying the failure criterion and changing to the real joints. 2.2 Determination of initial material parameters In order to reduce the influences of potential joints on simulating continuum before cracks initiation or propagation, the determination of initial joint stiffness is the key. And the other...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-141
... Reservoir Characterization criterion Norwegian criterion lining requirement reservoir geomechanics Power House pressure tunnel investigation excavation design approach selection concrete lining leakage tunnel Upstream Oil & Gas design method in-situ stress steel lining...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-112
... are used to evaluate the integrity of the salt barrier. For this purpose, the dilatancy criterion and the hydraulic criterion are considered. Introduction Geoscientific surface exploration looking at the suitability of the Gorleben salt dome as a potential site for a geologic repository for high...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-103
... is analyzed by strength reduction method. But inhomogeneity is the basic characteristics for geotechnical materials. Engineering slope stability analysis safety factor Strength Reduction Method criterion sort judgment inhomogeneous characteristic equation Upstream Oil & Gas material...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-113
... storage displacement gas temperature hydraulic fracturing temperature distribution convection thermal expansion coefficient rapid depressurization cavern tensile closure spring meeting crotogino rock temperature Upstream Oil & Gas criterion thermal stress rock mass fracture onset...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-106
... Engineering criterion mechanism Upstream Oil & Gas heterogeneous material mesoscopic element failure process rock mass Reservoir Characterization strength heterogeneity numerical simulation slurry constitutive law mechanics rock particle Artificial Intelligence Chinese...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-101
... been developed over the past 30 years, in which either Mohr-Coulomb (M-C) or Hoek-Brown (H-B) yield criterion was used. Considering different models of rock behaviour, such as the elastic-perfectly plastic, elastic-brittle-plastic and elastic-strain softening, with different yield criteria M-C and H-B...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-052
... Artificial Intelligence failure criteria Reservoir Characterization machine learning anisotropy index failure criterion reservoir geomechanics strength Porce III Upstream Oil & Gas criterion gneiss envelope rock material MPa powerhouse chamber mohr-coulomb criterion...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-103
... equilibrium calculation dilatancy angle Hoek fractured rock mass Upstream Oil & Gas non-dimensional pressure Serrano coefficient non associative strength tanδ tanω Olalla expression constant dilatancy angle criterion failure criterion non linear failure criterion equation...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-093
... Reservoir Characterization displacement unstable zone plane extensometer cavern spaced bedded rock mass reddish brown siltstone chainage 48 powerhouse cavern transformer cavern safety factor rock mass Upstream Oil & Gas criterion sidewall equivalent transversely upstream...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-128
... for the upper bound limit of safety factor of rock slopes is formulated, in which the velocity field satisfies the constrain conditions including the Mohr-Coulomb yield criterion on the slide surface, the associated flow rule, boundary conditions, as well as the virtual work of the block system. The model...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-074
... of two angles describing the orientation of the rock bedding. Bedding has an important effect on the behaviour of such type ofrockssinceitcontrolsbothitsmechanical behaviour (e.g.,highestcompressibilityindirection perpendicular to Upstream Oil & Gas criterion structural geology Reservoir...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-004
... increases significantly with the magnitude of σ 2 , reaching levels of up to 10–100% higher than the peak σ 1 when σ 2 = σ 3 . The true triaxial strength criterion is obtained by plotting all test results in a modified Nadai (1950) domain, in which the data points are best fit by a power function in which...

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