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Keywords: criterion
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Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-402
... a predictive geomechanical model that aims to workout drilling solutions to optimize well construction and mitigate operational hazards. Numerous parameters must be considered to carry out the mechanical analysis and they mainly comprise the in situ stress field, the mud weight, a chosen failure criterion...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-410
...) conducted a series of experiments on naturally fractured hydrostone blocks and Devonian shale to inspect the effects of intersection angle and differential stress on the hydraulic fracture propagation. Renshaw and Pollard (1995) developed a simple criterion to predict whether the growing hydraulic fracture...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-421
... deviation rs2 software criterion stability probability rocscience inc point estimate method cross-section Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Probabilistic stability analysis of open pit...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-424
..., the one shown in Figure 1b, were developed from this research in an effort to aid practitioners achieve better cut slope designs. upstream oil & gas criterion carter reservoir characterization mechanism geometry metals & mining competence plane engineering stability culmann...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-425
...). reservoir geomechanics vbp medley bimrock reservoir characterization variability dimensional variability strength sanz rehermann 2004 structural geology stability configuration criterion upstream oil & gas orientation matrix lindquist lindquist 1994 symposium napoli underestimation...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-355
... excavation or design stages using the Generalized Hoek-Brown failure criterion, numerical modelling is also used and preliminary support is defined applying RMR and Q rock mass classification systems. 1 Introduction Different methodologies for design of tunnel support are being used by engineers...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-358
...) of two and three-dimensional limit equilibrium methods (LEM). For rock masses, typically characterized using Generalized Hoek-Brown (GHB) failure criterion, an a priori linear or bi-linear fit of the strength envelop is obtained to provide equivalent Mohr-Coulomb (MC) parameters valid within a specific...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-360
... the slope eventually grading to zero. upstream oil & gas envelope relaxation mechanism case 3 reservoir characterization strength criterion hoek-brown criterion equation strength envelope application figure disturbance guideline variation thickness case 2 cohesion rocscience...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-374
.... particle slot-shaped breakout criterion microcrack upstream oil & gas breakout sandstone concentration reservoir characterization figure high-porosity sandstone experiment strength particle assembly kovacich reservoir geomechanics slot-shaped borehole breakout borehole simulation...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-376
.... The margin between the Resistance to collapse and the resistance to the minimum collapse is in the order of 20-25% and therefore the equations of the norm provide a safety factor. A new criterion of casing collapse was proposed by Huang and Gao (2015) where collapse and post-collapse are represented by two...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-452
... by TFINE, which is a three-dimensional finite element code developed by Tsinghua University (Liu et al. 2018). engineering reduction table 1 elevation deformation simulation tsinghua university correlation criterion evaluation numerical iteration instability stability university state...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-454
... artificial intelligence algorithm groundwater bieniawski gini criterion classification assessment matrix inclination Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Assessment of mine rock slope...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-455
... Abstract The Hoek-Brown strength criterion is the most used tool for rock mass strength estimate. For weak rocks, with UCS in the range of 3 to 15 MPa, this strength criterion using the GSI or RMR 76 (Bieniawski) classification system yields conservative strength parameters, as observed...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-303
.... hydraulic fracturing reservoir characterization confinement excavation upstream oil & gas reservoir geomechanics geometric dilation strength rock mech diederich wellbore design metals & mining pillar criteria limitation fracture underground excavation criterion figure 5...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-319
... tensors, respectively. In case of transversal isotropy, these tensors have 2 and 5 independent parameters. Such an important properties as strength, or transition from elastic to inelastic deformation in general case do not possesses tensor properties. To describe these properties a combined criterion...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-331
... to a far-field uniform compression. At the perimeter of the hole an all-around uniform pressure is applied. The constitutive law adopted for the elastic region is a special form of gradient elasticity while for the plastic region around the tunnel; the Tresca failure criterion is used. Appropriate boundary...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-334
... quality, sources of natural vibration such as seismic ground motions or fault activity or mining blasts. reservoir geomechanics rockburst copper mining criterion excavation international symposium upstream oil & gas metals & mining santiago strainburst estimation ppv chile...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-335
.... A criterion for assessing barricade strength using displacement histories with gradual increase in hydro-static pressure head has been successfully applied. From modeling it has been found that, for arched barricades, the failure initiates with horizontal tensile cracks, but the barricade ultimately fail...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-341
... characterization rock mech min sci coal mining reservoir geomechanics strength mpa united states government metals & mining yielding assessment kumar extensometer criterion monitoring pillar strength displacement waclawik instrument strata Rock Mechanics for Natural Resources...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-350
... installation gallery lining evolution numerical modeling grc rock mechanic argillite confinement excavation int interface tunnel criterion determination international journal Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020...

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