... in between two stopes. Model 5 signifies a sequence of extraction leaving single pillar between consecutive stopes. This model involves extraction of all four consecutive stopes The study compares the results of numerical models 3, 4 and 5 and determines safety factor in each case to take a decision...

.... 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...

... 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...

... of blocky rock slope excavation surface based on key block theory. With the traditional key block method, the stability conditions of blocks on the exposed surfaces are assessed by applying a certain safety factor (Goodman et al. 1985 and Windsor 1997). However, the volume of key block and the overall...

... with geotechnical 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...

... stability analysis foundation block monitoring pillar 1 refurbishment project passenger transportation anchor force foundation Salzburg safety factor untersberg cable car pillar 1 tieback ?? ABSTRACT: For the construction of the Untersberg cable car in 1961, the foundations of pillar 1 had...

... 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...

... 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...

... 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...

.... 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...

... on safety factor and contact material. The contact pressure in ULS and SLS is the same and the contact pressure distribution in ULS is determined according to the settlement calculations of theoretically separated minimum foundations. SLS values can be calculated when dividing ULS values by a combination...

... 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...

... 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...

...) 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...

... 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...

... 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...

...-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...

... – 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...

... 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...

... 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...