... Upstream Oil & Gas november 2018 asian rock mechanics symposium 29 rock mass block shape rock mass stiffness analytical solution stiffness Reservoir Characterization strength discontinuity determination orientation isrm international symposium loading Hoek Abstract...

... to explain the failure failure probability (FP) slope due to the variation in the factors to be input parameters. The method used in determining the FP value of slope is a point estimate method (PEM). The results showed that FP values of the stability curve of 10.2% is more pessimistic than the curve Hoek...

... to be used for predicting of strength of rock masses from soft to hard rock masses. In addition, a new procedure for defining of the disturbance effect on the strength of rock mass is introduced to the new empirical approach in conjunction with Hoek and Brown failure criterion. INTRODUCTION Determination...

.... The modified Lade criterion overestimates the actual strengths at all levels of 3, showing the mean misfit = 15.4 MPa. The Coulomb and Hoek and Brown criteria can not describe the salt strengths beyond the condition where 2 = 3, as they can not incorporate the effects of 2. Both circumscribed and inscribed...

... displacement diameter analytical method Hoek Abstract: The Aloft dam diversion tunnel with length of 450 m and diameter of 9 m is to be excavated in left abutment of Aloft dam and the currently under study. The lithology mostly comprises of jointed Asmara and Arum limestones. The tunnel passes...

... Geological Strength Index - GSI (Hoek et al, [6 Originally, the GSI was developed for the Hoek-Brown failure criteria, but knowing the Hoek-Brown material constants, the Mohr-Coulomb parameters (namely the internal friction angle, and the cohesion, c) can be also calculated. 2.1. Geological Strength Index...

...) Theoretical- Analytical method. In this study, the following methods are used to estimate the squeezing of Beheshtabad tunnel and the corresponding results are compared with each other: 1- Empirical methods (e.g. Geol (1994)'s approach based on N value). 2- Semi-analytical methods (e.g. Hoek and Marinos (2000...