... and the different load configurations give rise to subtle but important differences to stress distributions throughout samples during testing and at the onset of failure. To reliably obtain the tensile strength accurate stress distributions, especially at the location of the initial crack, must be determined...

... an insight to understand the effect of sublevel stoping on haulage drift; however 3D analysis was considered necessary to evaluate stress distribution as stopes are mined and backfilled along the orebody strike. Ferrero et al. (2010) analyzed the stability conditions of old abandoned quarry of Varese, Italy...

... problems resulting from indefinite contact conditions that significantly change the stress distribution in discs with a change in the disc material. Because important factors for stress distribution in the disc specimen such as contact angle and friction conditions vary depending on the rock deformation...

.... Stress distribution and the stress intensity within the sample were analysed with Finite Elements Method and numerical modelling techniques using ANSYS R.14 software. The direct tensile test yielded lower strength values than the indirect test. Direct tensile test is affected to a greater degree...

... Oil & Gas Kirsch Greenspan savin London clapeyron metals & mining kolosov elastic stress circular hole application stress distribution Lamé rock engineering ovaloidal hole University inglis mechanics Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay...

... to the tunnel excavation we have particularly focus the numerical results of horizontal and vertical 884 stress distribution around the tunnel and the horizontal and vertical displacements. 3.1 Induced stress The horizontal and vertical stress distributions for the FLAC and UDEC equivalent model for every...

... of competent adjacent rocks in the roof of the seams and incomplete seam extraction in the overburden, cause irregular stress distribution in the rock mass and stress overflow in those regions with the highest stress concentration. Destress blasting in overlying competent rocks is a very important rockburst...

.... The presence of casing is considerably important in terms of stress distribution around the wellbore. Also, the quality of the cement sheath may affect the initiation of an induced fracture and the geometry of propagated fracture plane around the wellbore wall. In this study a generic model was developed...

.../rock interaction under various indenter profiles to understand the stress distribution and crack propagation in rock, as a function of indenter profile. The indenter/cutter profile is a primary parameter for rock cutting research. Numerical modelling is carried out using FRANC2D to determine...

... classification to obtain the GSI parameter. Numerical analyses of the slope is performed using finite element computer software Plaxis 2D to define stress distribution in the rock and relevant rock strength. Failure mechanism of the slope is defined for two critical soil strength distribution using phi-c...

...Eurock 2005 -Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor & Francis Group, London, ISBN 04 1538 042 1 Simulation of stress distribution around cylindrical mined out spaces YD. Baryshnikov & 1.L. Boltenhagen The Institute of Milling, Novosibirsk, Russia M.V...

... wellbore integrity Upstream Oil & Gas solute diffusion shale diek diffusion equation borehole wall stress distribution Eurock 2005 -Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor & Francis Group, London, ISBN 04 1538042 1 Chemoporoelastic model...

... Reservoir Characterization strength elastic response geological condition Upstream Oil & Gas cavern evaluation pillar laboratory test variation cross-section unrecognised mining structural geology vicinity underground reservoir stress distribution cavern wall stress...

... (1958) studied the stress distribution of a beam with rectangular cross-section in terms of a transformed beam section. His result shows that when ET < Ee, the position of the neutral axis will be moved to the concave side of the beam, as shown in Figure 4b. As a consequence, the stress distribution...

... stress distribution stress concentration Eurock 2005 -Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor & Francis Group, London, ISBN 04 1538 042 1 Stress state determination and prediction in rock mass with rockburst risk in Ostrava-Karvina coal basin G. Takla, 1...

... coupling concept mechanical behavior stress distribution air side For the simulation of the hydraulic and mechanical behavior of rock salt as well as the hydraulic-mechanical interaction in the disturbed rock zone (DRZ) around sealing systems, the TUC coupling concept has been developed within...

... that the principal axes of the stress state do not anymore correspond to the axes of the specimen. Stress distribution varies inside the sample and depends upon geometry of the specimen. For more slender ones the volume of rock submitted to a quasi-uniform uniaxial state of stress is larger. However, more slender...

... this distance. reservoir simulation different system discontinuity normal thrust bedding plane displacement homogeneous model stress distribution vertical joint orientation discrete model comparative investigation jointed rock strength horizontal bedding plane rock block tunnel Eurock...

... stability stress distribution Eurock '93, Ribeiro e Sousa & Grossmann (eds) © 1993 Balkema, Rotterdam 90 54103396 The evaluation of the stability of abandoned calcarenite mines in South Limburg, Netherlands Évaluation de la stabilité des mines de calcarénite abandonnées dans le sud du Limburg, Pays-Bas...