... discontinuity equilibrium approximation eastern alp safety 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG The Correct Way to use the Hoek-Brown Strength Criterion for Slope Stability Analysis on the Example of Vals (Tyrol/Austria) Mariella Illeditsch pi...

... of sensitivity for different models and rheological parameters, which has helped us to optimize the approximation. 1 Introduction Landslides cause important economic damage and a large number of casualties every year around the world. Engineers and geologists need to understand the mechanisms involved...

... based on Biot's theory and a nonlinear component based on DiMaggio-Sandler cap plasticity model. The numerical approximation is implemented using continuous Galerkin finite element for displacement and pore pressure formulation. Several numerical simulations are performed and the results are compared...

... settlement. The settlement estimation formula from measured inclination is established with the help of longitudinal displacement profile approximation proposed by Panet (1979). The applicability is verified by a numerical simulation and 3 cases of measurement data post-evaluation. It is made clear...

... Reliability Method (FORM). The probability of failure of a rock slope in the First-Order Reliability Method is provided by a linear approximation of the failure function. The FORM is most commonly used because it is efficient; its accuracy, however, deteriorates when the nonlinearity of limit-state function...

... domain instead of meshing. In the Element Free Galerkin Method (EFGM) using moving least squares (MLS) approximation, a linear combination of basic functions is fit to data by a weighted function. In this paper, the kirsch problem is being analyzed to validate the Element Free Galerkin Method accuracy...

... with pretensioned bolts. The dinstinct element method, in combination to the finite differences method is used to perform the numerical experiments. A good approximation of the experimental data is achieved, the best results having been provided by the Barton-Bandis joint simulation through calculation of instant...

... geostatic behavior. One of these factors is the in-situ stresses prior to excavation which, as a first approximation, can be related to the section's cover depth. Nevertheless, for a given tunnel it is possible to define a range of cover depths for which this factor's influence is irrelevant and therefore...

...11th Congress of the International Society for Rock Mechanics Ribeiro e Sousa, Olalla & Grossmann (eds) © 2007 Taylor & Francis Group, London, ISBN 978-0-415-45084-3 Approximation of stresses and displacements around circular opening excavated in strain-softening rock masses Y.-K. Lee Department...

....} eR', when the vector b={b"b2, b eR'" and the coefficients ay{i = 1.2, .. :.n;j = 1.2, m) of the system 1! i aux. + a12x2 + +a x; = bl a21x1 +~2X2+ +a2.x. = b2 -~ , J I d (1) l ' I l!. . I are approximately given. Being measured they contain inevita- ble error. . . The system can be written...

... colleague Nielen Van der Merwe has bravely synthesised. Reservoir Characterization classification approximation Upstream Oil & Gas strength Rock mechanics Artificial Intelligence aperture cavern reservoir geomechanics Engineering Barton excavation tunnel input data general report...

... that the concomitant prediction of no horizontal strain above the reservoir disagrees with field observations. Uniaxial strain is shown here to be a good approximation for a thin inhomogeneity. having thickness much less than lateral extent. But, even when the elastic properties of the inhomogeneity are identical...

... Upstream Oil & Gas isotropic plane compression stress stress-strain behaviour tensile strength strength sandstone compression test determination Reservoir Characterization approximation specimen investigation high temperature deformation amorphous rock Material Behaviour...

... stress in the higher open porosity zone is taken 40 % less than the limiting stress outside the zone. It is related to the above estimation of the effect of the brine on the limiting stress of rock salt. The solution to the problem was obtained by the method of successive approximations. As the initial...

...). We will consider the simplest case where the compression and tension diagram is approximated (in a certain stress range) by linear functions, but with different deformation moduli (see Fig. 3). As can be seen from Eqs (7), the different tensile and compression strength leads to a decrease in both...

... as the function of the above parameters. In the deeper domain, however, the stresses distribute without slipping. Stress distribution in the shallower domain is approximated by the combined Pascal distribution in terms of the binomial coefficient. This distribution has a tendency to concentrate towards...

... knowledge of those reciprocal reactions, by providing an approximate method for their determination, based on the congruency between the rock deformations and those of the lining. Frequently, especially for big road and railway tunnels, the construction of side walls is carried out successively, so...

...-direction. Then we superpose a number of elementary solutions of this kind in order to find an approximation to the required solution which satisfies the stress condition σ y = P at a number of points on the open part of y = 0. The creep functions Skl/il (t) are ordinarily defined for t > 0 only...

...- nage se trouve dedans aussi. La reponse non-lineaire et non-ideale est representee par moyen d'user des approximations numeri- ques pour evaluer les transformations in- tegrales par moyen d'employer des approxima- tions en forme d'une ligne simple et toute droite, divisee et sans interruption. La ligne...