.... Although the runout talus deposits were from different areas and were of varying size, they contained roughly the same dimensions and distributions of blocks. Images of the cliff face indicated that blocks were detached from the base of columns along horizontal discontinuities which lacked support...

... deformable due to the inclusion of more discontinuities. The rock mass modulus can be measured directly downhole with a variety of devices, such as a uniaxial or radial jacking rig, a flat jack, or more commonly, a dilatometer. Modulus values can be estimated indirectly using site-specific empirical...

... ABSTRACT: The sectional kinematic feasibility analysis of a slope does not demonstrate the continuous kinematic criticality of a curve-faced rock slope prone to discontinuities. The geotechnical engineers and geologists need to understand the zones carefully where roads, tunnels, bridges...

.... The spatial discontinuity may be one influential factor for differentiating the catalog into dominant swarm-like or mixed burst- and swarm-like behavior. Further investigations on identifying and quantifying other possible influential factors that differentiate the catalogs into different types are warranted...

... ABSTRACT: Laboratory experiments have been carried out to investigate the growth of hydraulic fracture (HF) in an anisotropic rock with pre-existing discontinuities such as bedding planes and veins. The experiments are designed in light of scaling relationships that enable investigation...

... are usually defined by combinations of discontinuities within the rock mass and the free faces of the excavation. The discontinuities may exist prior to the creation of the excavation or may initiate and propagate due to stress redistribution subsequent to the formation of the excavation. The forces causing...

... configuration in local ground conditions, often without the necessary understanding of what tests are needed and how the results may be analysed and interpreted for the purposes of design. metals & mining discontinuity fixture development wellbore design configuration reinforcement...

... ABSTRACT: Mechanical discontinuities are defined as any surface through which some property of the rock mass is not continuous. Usually, the properties of the bulk rock separated by a discontinuity are used to predict the behavior of a formation. However, an analysis of the discontinuities...

... their stability states (block stability analysis) for instability analysis around the surface and underground excavations (see Figure 1). fracture voxel identification fracture characterization real time system intersection hydraulic fracturing discontinuity geometry reservoir characterization...

... karst cavities. The interaction of these cavities with the extensive presence of discontinuities is the major cause of ground control problems encountered during stone mining operations. This paper presents a case study for analyzing the effect of the karst cavity on the strength of a pillar...

... ABSTRACT: In this study, 3DEC modeling in conjunction with the Discrete Fracture Networks (DFNs) technique was performed to better understand the true anisotropic behavior of the specimens acquired from a bump-prone underground coal mine. The spatial characteristics of the discontinuities (i.e...

... hydraulic fracturing discontinuity metals & mining rockmass reservoir geomechanics stress state numerical discontinuous large-scale numerical model ahmed mechanical properties numerical model stress field in-situ stress measurement boundary stress measurement fracture...

... reservoir characterization vacuum saturation chamber pressure specimen reservoir geomechanics pore pressure rock specimen upstream oil & gas back pressure b-value test saturation pyrak-nolte engineering civil engineering discontinuity b-value indiana limestone desiccator...

...-parallel to jointing, with a continuous function of strength in between the two extremes. Input parameters for the system are rock discontinuity set statistics, intact rock strength, discontinuity strength, and RQD. A slope instability case history example is back analyzed using the strength estimation...

.... 1987; AbouRizk et al., 1999; Rawanpura and Ariaratnam, Geotechnical parameters (e.g., average spacing of 2007). Simulation models are resourceful tools that allow discontinuities, the presence of clay and quartz content) the exploration of what-if scenarios (AbouRizk, 2010; are considered to find its...

... Abstract The failure of rock along pre-existing discontinuities is a major concern when building structures on or in rock. A goal is to develop methodologies to identify signatures of imminent shear failure along discontinuities to enable implementation of measures to prevent the collapse...

... condition at the locations where the methods were developed. Discrete Fracture Network (DFN) model allows inclusion of discontinuities data from site-specific geotechnical investigation stage to be stochastically quantified and used explicitly as design input. Hence, this offers a more quantifiable...

... process explanations for deformations that leave behind certain features, such as fractures or deformation bands that cut across lithological layering. Similarly, veins – which are mineral-filled discontinuities – form arrays that occur through some rock-mass exposures. The volume occupied by the added...

...ARMA 21 1301 An Efficient Higher Order Displacement Discontinuity Method with Joint Element for Hydraulic Fracture Modeling Jiawei Li Texas A&M University, College Station, Texas, USA Yanchao Li CNPC Chuanqing Drilling Engineering Co. Ltd., Chengdu, China Kan Wu Texas A&M University, College...

... to virtually map large numbers of discontinuity features such as fractures, bedding planes, and joints; features that would otherwise be inaccessible in a safe manner. Volumetric measurements can be made on discrete hazardous blocks to support rock fall simulation studies. This workflow was applied...