... procedures, and in consequence the dilation corrected friction angle for single stage is normally lower than that determined from multi-stage tests. This means that the Barton-Bandis consistently overestimated the shear strength of the bedding when applying the laboratory determined JRC, JCS and Øb...

... that a realistic behavior could be achieved. With the validated model, several parametric studies such as influence of dilation, confinement, and friction angle are performed. Understanding the influence of the post peak parameters gave a full extent of the usage of material performance in the numerical model...

... isotropy. In view of this, this work focuses on the formulation of a transversely isotropic rock failure condition, which is an extension of the isotropic Mohr-Coulomb (M-C) criterion by appealing to the assumption that the friction angle and cohesion of a plane can be evaluated as a function of relative...

... Symposium for 2018 Table 1. Input parameters for the numerical modelling Term Unit Value Value Intact Compressive Strength ci MPa 124 Material constant for intact rock mi -- 32 Disturbance Factor D -- 0 Geological Strength Index GSI -- 67 mb -- 9.847 s -- 0.026 Friction angle m 52.34 Cohesive strength...

... using a rock surface grinder and meet ISRM standards. For the triaxial test, the shear slip of weakness planes is induced by gradually increased mechanical loading, which is used to obtain mechanical properties including shear strength, friction angle, normal stiffness, and shear stiffness. a. the shale...

... is not fully understood. Our case study of past construction data shows that the technique has been used in conditions of deep overburden, low competence factor, and stratified rocks with strong cohesion and low internal friction angle compared with massive rocks. In this study, a three-dimensional numerical...

... friction angle 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan Design Methodology for the Prediction and Stabilization of Mega Wedges in Large Unlined Storage Caverns P. Vaskou a* and N. Gatelier a a Geostock, Mined Cavern Department, Rueil-Malmaison, France * philippe.vaskou...

... arms8 rock slope reservoir simulation cohesion metals & mining mechanical movement rock slope movement october 2014 rock mass layered rock slope alzo Upstream Oil & Gas numerical simulation flaw rupture surface friction angle tensile strength 8th Asian Rock Mechanics Symposium...

... Upstream Oil & Gas hazard assessment komata parametric study Scenario friction angle debris likelihood rock fall slope collapse 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan A Case Study on The Hazard Assessment of Rock Slope by The Scenario Analysis S. Mikia...

... rupture surface enters residual strength phase, bearing capacity on rupture surface only comes from the friction provided by residual frictional angle r . Barton N.R. vp 0s sp ( )s vp A B P C 152 (Barton and Choubey, 1977) defined r as basic friction angle, which can be calculated from residual...

... is decreased; however, plastic index limit is increased. It is to be noted that results of direct shear test reveal increasing shear strength of soil due to increasing cohesion parameter and soil friction angle. Keywords: Loess Soils, Shear Strength, Cement, Lime 1. INTRODUCTION Studying and anticipating...

..., the weathering degree is in the range 775 JCS/JCSun = 0,45 - 0,88. Based on the well-known Barton criterion (Barton and Choubey 1977) and assuming a basic friction angle of b = 35°, the peak friction angle of the joints results to be in the range 35° 45°. Karst features have been identified during the surveys...

... rocky column equation friction angle fracture mechanics theory strength rock slope safety factor limit equilibrium theory ABSTRACT The stability of slopes during and after excavation is always a significant issue in the field of rock mechanics. The blocky-flexural toppling failure is one...

... (USBRL), across Anji, a seasonal tributary of Chenab River, near Reasi. The proposed Anji Bridge is 186m high and 657m long. The shear strength parameter values of cohesion (c) and friction angle (φ) were interpreted by conducting in-situ shear tests for rock to rock interface from five blocks at right...

... information needed are the exact cross section of the opening and the friction angle of the joint planes. Then, with the aid of a simple geometrical construction, zones of joint slip with potential sliding and flexure around a tunnel of any shape can easily be identified. In Figure 1 this is shown...

... international journal physical domain nanyang technological university NMM tetrahedral wedge discontinuity manifold element friction angle ISRM International Symposium 2010 and 6th Asian Rock Mechanics Symposium - Advances in Rock Engineering, 23-27 October, 2010, New Delhi, India TETRAHEDRAL WEDGE...

... the strength properties obtained by RST and BST. Therefore, the purpose of this study is to obtain the relationships between the cohesion and the friction angles obtained by RST and those by BST. The results demonstrated that, for the hard rock masses [H], the strength properties by BSTs are lower than those...

... relative dilatancy index coefficient Upstream Oil & Gas friction granular fill compressive strength reservoir geomechanics rock mass gouge joint factor strength ratio University dilatancy strength strength parameter uniaxial compressive strength jointed rock friction angle ISRM...

... Goodman Reservoir Characterization Engineering Rock mechanics stability relative error friction angle natural rock slope numerical dda method rock mass deformation ISRM International Symposium 2010 and 6th Asian Rock Mechanics Symposium - Advances in Rock Engineering, 23-27 October, 2010, New...

... particle sedimentary argillaceous rock Engineering variation shale mudrock triaxial test determination argillaceous rock pore size distribution equation Upstream Oil & Gas cementation size distribution porosity friction angle permeability ISRM International Symposium 2008 5th Asian...