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Keywords: discontinuity
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Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-028
... stability rock mass mining discontinuity planar failure Hoek probability failure mechanism AfriRock 2017 Rock Mechanics for Africa Cape Town, 2 7 October 2017 The Southern African Institute of Mining and Metallurgy 351 The significance of identifying potential failure mechanisms from conceptual...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-023
... types of ground-based LiDAR were utilized to acquire point clouds of topography and outcrops nearby the shrine. High-resolution point cloud data can be used not only to interpret the large-scale geological linearities, erosion gullies and scarps, but also the attitudes of ubiquitous discontinuity sets...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-027
... Rock Engineering System database artificial neural network Hudson naghadehi slope stability index machine learning Upstream Oil & Gas Rock mechanics discontinuity instability slope stability prediction stability application AfriRock 2017 Rock Mechanics for Africa Cape Town, 2 7...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-047
... horizontal discontinuity occurs preferentially along the vertical face as non-uniform separate rivulets exiting at discrete points along the discontinuity; and wider preferential flow paths in the test with an intersecting vertical discontinuity. This occurs even if the water supply implies that it should...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-073
... that may require more detailed investigation or modifications to mine designs. These methods are widespread among geotechnical engineers as one practical way to assess quality of the rock mass. In open pit mine bench faces with no clear discontinuities, one single joint may dominate the pit slope plane...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-066
... Columbia, Canada. We present the mapping of rock discontinuities for numerical modelling using a hierarchical geological structure order. Large-scale geological structures which were identified and mapped on the pre-failure and present-day topography are used in a preliminary analysis of the rock slope...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-076
... roughness, geostatic stress, material properties of the bulk rock, and characteristics of the pore/interfacial fluid, if any (Pyrak-Nolte and Morris, 2000) – play a critical role in the stability and strength analysis of rock discontinuities, and control the key characteristics of fracture networks...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-056
... Characterization classification Engineer Upstream Oil & Gas pump chamber investigation interpretation water management platform discontinuity cofferdam stability rock mass Shaft Excavation construction structural geology boschkop abstraction work rock support excavation footprint cut face...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-081
.... The side walls of the shaft have been supported with mesh, pinned by 1.8 m length split sets, followed by a 0.3 m thick concrete shaft lining. Current geotechnical activities include support-installation audits and discontinuity mapping. The Rock Mass Rating (RMR) of Shaft #1 is determined from...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-077
... to the BI and discontinuities of the rock mass to produce a tool that can be used to develop objective wall control designs. The designs developed by the tool inherently take into account the rock mass characteristic factors at the centre of the rock mass classification methods above and significantly...
Proceedings Papers

Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-087
... The orientations of discontinuity sets and major geological structures greatly influence the stability of an excavation. Excavations should therefore, where possible, be orientated such that major discontinuity sets and structures are considered, allowing the likelihood of rockfalls...

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