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Keywords: discontinuity
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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-2019-0250
... 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...
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-2019-0134
... 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-2019-0279
... 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
... 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 and...
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 and...
Proceedings Papers

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

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1870
... actual mechanical interaction between a hydraulic fracture near a natural fracture or a bedding plane discontinuity has not been studied, particularly under triaxial stress and hydraulic fracturing conditions. In this paper, we present the results of some lab-scale experimental work, demonstrating HF/NF...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1978
.... In one case in particular, Terrestrial Laser Scanning (TLS) is adopted to obtain a high-resolution 3D Digital Elevation Model (DEM) of the rock mass. countermeasure mapping rock fall Upstream Oil & Gas Simulation discontinuity knowledge management embankment digital elevation model...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2027
... characteristics of the main discontinuity surfaces from the photogrammetric 3D point cloud. In addition, this study was contributed by field measurements and laboratory tests of the rock joint strength for the analysis of the slope stability of the rock blocks. A set of corresponding discontinuity factors have...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1994
... ABSTRACT: Joint roughness directly affects the behaviour of discontinuities at the laboratory scale and the rockmass at excavation scales. As large infrastructure projects (e.g. deep base tunnels for transportation, large open pit and underground mines with complex geometries, and deep...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2057
.... Upstream Oil & Gas volumetric joint count rock slope application Marino assessment gsi assessment discontinuity geological strength index rock mass classification system point cloud riquelme Artificial Intelligence quantification LiDAR spectrum GSI value engineering geological unit...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2123
... ABSTRACT: This work presents a numerical technique capable of handling evolving fractures in rocks that allows extending, in a simple manner, standard finite element programs developed for geological (continuum) media to deal with the presence of discontinuities. The proposed mesh...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2188
... fracturing in fractured rock. The thermal stress, rock deformation and cracking induced by temperature change are modeled by FEMM. The finite element meshfree method (FEMM) is presented to model mechanical deformation and discontinuities. With the concept of partition of unity, the accuracy of global...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2147
... applicability of ubiquitous joint models and when they fall short of capturing the correct deformation behaviour. The paper will show that ubiquity does not equate to continuity and that ubiquitous joint models are not able to capture the correct behaviour for discontinuities of large extent, such as bedding or...
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 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1419
... ABSTRACT ABSTRACT: Footwall slopes refer to bedding rock slopes in which the slope face is parallel to a set of persistent discontinuities, which exist extensively in opencast mine. Stability evaluation of the footwall slopes is significant for theoretical study and engineering application. In...

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