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Keywords: strength
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Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-416
... displacement strength maccaferri innovation center particle figure 8 figure 6 tensile strength double-twisted hexagonal mesh engineering figure 2 Rock slope engineering 407_14263.indd 3399 23/08/19 4:53 PM 407_14263.indd 3400 23/08/19 4:53 PM Rock Mechanics for Natural Resources and Infrastructure...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-419
... upstream oil & gas q-slope orientation reservoir characterization discontinuity major discontinuity exposure engineering geologist excavation coating construction strength application filling rock mechanic Rock Mechanics for Natural Resources and Infrastructure Development Fontoura...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-421
... Method and Monte Carlo simulation method were used to analyse the slopes in finite element-shear strength analysis. The results of the analysis were then compared and potential for each method were discussed. The study provides understanding into the importance of uncertainty and variability in the rock...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-424
... equation figure sjoberg hoek representation global characterization university figure 6 lutton strength database Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Global characterization of high rock...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-425
... materials are often planned taking into account only the strength and deformability properties of the weaker matrix, which means neglecting the contribution of blocks to the overall bimrock strength. However, as demonstrated by many case histories reported in the literature, such a simplified approach can...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-427
... metals & mining optimization slope stability assessment strength journal Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Slope stability assessment and slope optimization at Let eng diamond mine...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-432
... the bond strength, the residual shear strength, the shear slippage where bond strength occurred and the shear slippage where residual shear strength occurred on the cable bolt performance was studied. The results show that the bond strength played a significant role in determining the maximum pull-out load...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-440
... conclusions but based on the available information the preliminary observations shows that the system is able to apply active forces, since the slope geometry is favorable for it. rockmass installation safety instrumentation mesh strength gobbi hoek rock mechanic geometry congresso brasileiro...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-443
... by Leagold Mining Company. The results have demonstrated that the insertion of groundwater into the model is in fact the most important driving factor influencing slope stability. Moreover, the failures observed in 2015 and 2017 seems to be related to specific discontinuities in which the strength parameters...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-445
...-nailing wall in sand layer. In view of it, experimental research and theoretical analysis are carried out. The strength conditions of holdability of the drilling hole in unsaturated sand was analyzed with the theory of elasticity. Using FLAC3D, simulations of holdability of the drilling hole in the sand...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-352
.... The stability evaluation of the mine roof was carried out by obtaining factor of safety at five locations from the shear strength and the developed stresses. The numerical simulation pointed out that the direction of development of gate road entries played the prime role in the roof failure rather than the high...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-359
.... deformation sccbm double-shield tbm strength optimal reservoir characterization tbm rock mechanic excavation simulation structural geology tunnel shield double-shield tbm tunnel comprehensively anagnostou equation real time system tbm jamming simulation interaction cutterhead thrust...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-360
... are absent. In this paper we will describe a methodology that was developed to prescribe strength as a function of depth by considering the variation of disturbance with depth. Four simple cases were analyzed in Rocscience's Slide to present the impact of disturbance on the failure mechanism geometries...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-363
... nonlinear behavior of the specimens, such as strain-softening, dilatancy, anisotropic strength and cracking process can be reproduced. Furthermore, by analyzing the response of the two elements that located near the crack tip and in the matrix respectively, dependence of their macroscopic behavior...
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
... collapse based on the Klever-Tamano equation. annular propagation strength casing and cementing pipe numerical simulation geometry simulation cascade criterion upstream oil & gas diameter resistance equilibrium variation maintenance integrity equation depressurization deform...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-380
... and strength, where increasing porosity increases permeability and decreases strength. Porosity is generally gained through dissolution associated with smectite/argillic alteration and lost through precipitation associated with both smectite/argillic and propylitic alteration. We show that deeply-buried rocks...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-393
... in gravel; the mineral composition and strength differences between matrix and gravel influence rock mechanical characteristics; gravel particles have shielding effect on the fracture extension. 1 Introduction MH oil field is an unconventional reservoir with high development challenges in Northwest...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-394
.... wellbore design wellbore integrity envelop upstream oil & gas natural ga science wellbore modeling & simulation magnitude journal strength fluctuation jngse ubedullah ansari directional drilling reservoir characterization drilling operation wellbore stability reservoir geomechanics...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-453
... by the ratio between the resistance forces and the driving forces. In order to increase the reliability of slope stability analysis, sensitivity analyses with variation of rock mass strength and geometrical parameters can improve significantly the confidence in factor of safety results. Besides the use...

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