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Keywords: safety factor
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-150
... of the controlling parameters. metals & mining Reservoir Characterization Upstream Oil & Gas different time step model 3 Artificial Intelligence stability analysis numerical analysis safety factor pillar fragmentation data mining underground structure Rock mechanics stability stress...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-110
.... Moreover, the choice of safety factor should take into account the presence of discontinuities, age etc. In case we retain a safety factor near one, the failure probability could increase signif- icantly. The choice of an optimum safety factor value depends on the experience and extensive knowledge...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-109
... the Critical Strength Reduction Fac- tor (CSRF) that can be used to estimate the Safety Factor (SF) at the critical state. SSR and CSRF values as well as deformations at critical parts were computed for the slope and No 50 Tunnel. Regarding to safety of these structures, com- putation results were interpreted...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-167
... engineering discontinuity key block excavation surface safety factor stochastic fracture ABSTRACT: Rock slopes stability attracts growing research interest over the past several decades as one of the fundamental issues in rock mechanics and rock engineering. The modelling strategy representing...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-035
... parameters allows calculating of well-known safety factors for slope failure in rock and soil. Furthermore, the effect of water availability on slope stability can also be taken into account and is useful to estimate the effect of long-term precipitation events on slope stability. The calculated safety...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-006
... cumulated loss adds up to 20.3%. In case of a single anchor for one foundation block, the provided safety factor for the anchor design would therefore have been used up if it had never been restressed during its service life. The maximum deviations between the forces obtained by lift off tests...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-119
... that must result from a situ- ation close to equilibrium in the Tertiary of the lower zone of the slope. Using the classic methods of limit equilibrium it is not possible to obtain at one time a safety factor that combines two different mechanisms of destabilisation of the slope: toppling in one sector...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-115
... is a fundamental factor (Hustrulid & Kuchta 2006). To ensure the stability, the safety factor calculation caters for three main factors: the geological structure of the zone, the resistant properties of the materials and the hydrogeological situation of the zone. The first two factors are independent from de...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-201
... safety factor stabilization slope angle interceptor ditch Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 Slope stabilization at km 25.5 El Cobre highway CODELCO Chile, El...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-243
.... Geotechnical Recommendation for Design of Maritime & Harbour Works (Recomendaciones para Obras Marítimas, ROM 0.5–05), for application in the field of port construction. Approved in 2005 (previous version in 1994). strength site investigation safety factor Upstream Oil & Gas category...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-065
... the level of risk using the Fonseca Methodology, the rock mass quality by Bieniawski, Hoek & Brown and Romana classifications, as well as the estimated operational stability from the analytical safety factor and simulation methods. 1. Introduction of the movement of rocky bodies in residential areas...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-081
... of the variations of the different parameters involved in the obtained safety factors, for the bearing capacity of the rock mass. The original Hoek & Brown (1980) failure criterion has been used together with the Serrano & Olalla (1994) methodology to calculate the ultimate bearing capacity. 1...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-086
...) to determine the shear strength for discontinuity and for rock mass respectively. The finite difference program FLAC 6.0 has been used to validate the model. Results show in a sensitivity analysis executed, that it is possible to define with acceptable accuracy a sliding safety factor for the mechanism...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-105
... the Paleozoic in which the mineralization is embedded, is constitute by slates, tuffs and porphyric rocks. metals & mining Piezometer open pit reservoir geomechanics borehole safety factor Reservoir Characterization strength Galera mineralization las cruces guadalquivir blue marl hand...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-059
... by a simple Coulomb criterion as in Equation 2. reservoir simulation weak plane safety factor jointed rock mass orientation hoek-brown criterion Toronto Reservoir Characterization criterion stability slip surface Upstream Oil & Gas Geotechnique joint network rock mass rocscience inc...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-029
...-Smirnov (K-S) method, which will determine the most appropriate function for the distribution of the random variable. The characterization results can be used in determining the Safety Factor including the level of confidence and Probability of Failure based on the best fitting function. 1 Introduction...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-122
... – type of opening: separate, chamber, parallel or junction of the openings Uncertainties of the strength and deformation characteristics of the support Uncertainties of the design methods Reservoir Characterization strength calculation safety factor construction reservoir...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-042
... Disturbed Zone (EDZ) of a bolted underground opening. Analytical and numerical evaluations are employed to define the probability of failure, and a parametric study illustrates a methodology to design the support. Theme: Rock Excavation. Keywords: underground structures, safety factor, probability, hard...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-048
... Abstract: Rock support is associated with the rock mass quality as well as the in the state of situ stresses. A safety factor, defined by the strength of the support system and the load exerted on it, is usually used for rock support design. This design method is based on the principle...

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