1-20 of 379
Keywords: discontinuity
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1180
... 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...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1436
... 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...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1205
... and anisotropic. In addition, many faults pass nearby the mining zone. To reproduce such complex pre-mining stress state in a numerical model (Finite difference numerical model FLAC3D), stress gradients are estimated based on the existing stress measurements. The existing discontinuities in the mining area...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1766
... ABSTRACT: Understanding the frictional behavior of rock discontinuities is essential for the proper design of geotechnical structures in or on rock. While there has been extensive work on the shear behavior of joints and faults under dry conditions, comparatively less research has been devoted...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1799
...-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...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2112
... 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...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-0016
... 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...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1813
... and its overall influence on the utilization estimation. structural geology simulation model reservoir characterization utilization estimation correlation discontinuity dissertation upstream oil & gas colorado school proceedings modeling & simulation tbm rostami geotechnical...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1301
... Abstract Constant displacement discontinuity method (DDM) loses accuracy in predicting the opening and shearing displacement discontinuities of multiple fractures when fractures are closely spaced. We introduced an efficient higher order DDM (HDDM) that extensively improves the accuracy...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0038
... engineering 3D geovisualization experience. We demonstrate how VR/MR techniques can be employed to conduct/compare discontinuity mapping on virtual outcrops and advance the understanding/communication of landslide investigation and hazard/risk assessment. Artificial Intelligence Reservoir...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0134
... practically augments the widely accepted joint roughness coefficient (JRC) to account for the three-dimensional effects of real natural rock discontinuities. The Monte Carlo simulation allows for the uncertainty of the field measurements and rock strength properties, obtained using traditional geologic field...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0250
... to the high Young's modulus of both formations. Sensitivity analyses of the formation properties and in-situ stresses on hydraulic fracture propagation were carried out. hydraulic fracturing Reservoir Characterization reservoir geomechanics node Simulation discontinuity rock mass lattice...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0141
... ABSTRACT: The purpose of this paper is to present a numerical code for rock mechanics modelling of discontinuities such as fractures, joints and faults. We implement this in an open-source Matlab Reservoir Simulation Toolbox designated for rapid prototyping of geomechanics, reservoir...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0279
... activated zone along a weak interface is calculated based on a previous weak interface model (referred to as the FracT model). The effect of shear slippage along the interface on the subsequent height growth after the fracture crosses the interface is modeled using the 2D displacement discontinuity method...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0346
... fracture network. How a rock mass reacts to a blast is dependent on the rock itself and on the discontinuities within the rock mass. A set of discrete fracture network (DFN) realizations generated and assessed using MoFrac are used to derive inputs for a RES fragmentation interaction matrix. Parameters...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0275
... of vertical joint sets rather than bedding planes. We installed a monitoring station to record the local environmental parameters such as temperature and relative humidity along with crack meter readings and discuss the impact of daily and seasonal climatic variations on vertical discontinuity opening...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0449
... ABSTRACT: Shear strength along discontinuities plays a crucial role in the stability of rock structures. The development of geophysical methods to remotely monitor and assess changes in shear strength is essential to the identification of rock hazards that can lead to the loss of life...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0484
... results of the model. The following paper introduces a stochastic approach for analyzing rock block falls in underground excavations. This approach utilizes DEM (Itasca's 3DEC) and DFN's representing virtually mapped discontinuities obtained from terrestrial laser scans. The numerical models were carried...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1636
... ABSTRACT: Rock bridges are sections of an intact rock along otherwise through-going discontinuities, and the rock bridges play an important role in the geotechnical stability of underground excavations, surface slopes of mines, dams, foundations and other earth retaining structures. Numerical...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1792
... 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...

Product(s) added to cart

Close Modal