... at an abandoned quarry in Clear Creek Canyon Park, located 0.25 miles west of Golden, Colorado. The purpose of these surveys was for failure surface identification of a historic wedge failure and structural domain segregation of the remaining rock slope. The study site is composed of a heavily jointed...

..., traditional LEM slope stability analysis methods seek to locate one single critical failure surface. However, it is often desirable to consider multiple failure surfaces when dealing with real world problems. To achieve such a goal, this paper proposes a method called the locally informed particle swarm...

... oil & gas symmetry plane rock damage mechanism explosion shock wave underwater blast load explosive center underwater explosion zhong li shock wave loading failure surface numerical model reservoir characterization strength hydrostatic pressure pressure value peak pressure...

... failure surface, and the root mean square was used to calculate scanned point cloud data; a simpler index for calculating roughness based on area variation was established; the surface crack morphology of the sample was drawn by high-resolution photos, and the crack complexity was quantitatively described...

... are compared with previous results in 2D and with the reported topography of the characteristic section of the slope. The numerical results allowed estimating the onset and evolution of the failure surface and the formation of fragmented blocks. within the failing mass. This work also addresses a discussion...

..., and the correlation between these tests and the uniaxial compressive test (UCT) are similar, thus the POT is a practical alternative for estimating the direct tensile strength of rock material. Upstream Oil & Gas correlation adhesive lateral reinforcement strength pull-off test failure surface...

... rock. The presence of rock bridges between discontinuities increases shear strength along potential failure surfaces. However, estimating rock bridge percentages is challenging in the absence of mapping and joint persistence information. The lack of joint continuity data is common to many open pit...

... that there was good agreement (within 7°) between the experimental results and theoretical predictions. flow in porous media reservoir geomechanics Reservoir Characterization strength Fluid Dynamics waste management Upstream Oil & Gas Rudnicki Lode angle failure surface maximum stress specimen...

... labuz Pyramid specimen principal stress space Mean stress friction angle PMC failure surface compression equation ARMA 16-620 Failure criterion with intermediate stress and two friction angles Labuz, J.F. Department of Civil, Environmental, and Geo- Engineering, University of Minnesota...

... from fluid flow exceed the confining effective forces. The constituent materials’ mechanical behavior is described by a nonlinear hyperbolic model in which the stress variation over the Mohr-Coulomb shear failure surface is honored by a force rebalancing scheme. The study results indicate...

... as an alternative fracturing technique. The results show that, if designed accurately, pulsed fracturing could help trigger a ductile to brittle transition and can generate complex fracture networks. reservoir geomechanics Upstream Oil & Gas international journal failure surface pulse source strain...

... – post construction – the suspected sliding failure mechanism governed and that the actual design was suitably conservative. Upstream Oil & Gas uplift pier 5 failure surface compressive load strength British Columbia hydraulic fracturing Bridge pile cap modeling stability edge...

... strength Modeling & Simulation reservoir geomechanics gridblock Upstream Oil & Gas depletion mechanism pressure depletion shear failure cap surface compactive failure Symposium stress path reservoir pressure drawdown pressure failure surface shear stress permeability MPa fracture...

... and operating history that ultimately resulted in the failure of the slope. reservoir geomechanics infrastructure Reservoir Characterization metals & mining strength slope instability failure surface mapping rock mass instability forensic evaluation persistence knowledge management...

... stresses with no order implied; the notation ?I=?II=?III is used for major, intermediate, and minor principal stresses. The shape of the failure surface in principal stress space depends on the form of the failure criterion [1, 2]. For a linear function, such as the Mohr-Coulomb failure criterion...

... slightly dependent on confining stress. The deviatoric stress at crack initiation was on average 2.2 MPa. The failure behavior is observed to be dependent on the confining stress. At zero confinement axial splitting was observed. With increasing confinement the angle of the macroscopic failure surface...

... behavior depends on the third invariant of deviatoric stress, J3. A dependence on J3 would cause a change in the shape of the failure surface from a circle to a rounded triangle when viewed in the deviatoric (pi) plane. It is well known that sands are J3 dependent. However, it unknown if porous sandstone...

... of fractures requires remeshing, which complicates the simulation. NMM Simulation hydraulic fracturing criterion Upstream Oil & Gas physical cover Artificial Intelligence mathematical cover mohr-coulomb criterion progressive failure rock slope manifold method failure surface numerical...

... collection No Yes Step1. Choose a GSI variable and obtain the unknown parameters s, a using the selected GSI and designate it as GSIs,a. Step2. Using the failure surface criterion and limit equilibrium (bishop) and maintaining GSIs,a, determine the value of parameter m which satisfies the condition of unity...

... specimen, tested at 5 MPa, was unloaded during the softening portion of the test and thus the specimen remained intact and the rupture zone was well preserved. Further, a specimen tested at 20 MPa was unloaded after the failure surface extended across the entire specimen. Care was taken to preserve...