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dc.contributor.authorFahrman, Benjamin Paulen_US
dc.date.accessioned2016-03-29T08:00:35Z
dc.date.available2016-03-29T08:00:35Z
dc.date.issued2016-03-28en_US
dc.identifier.othervt_gsexam:7278en_US
dc.identifier.urihttp://hdl.handle.net/10919/64986
dc.description.abstractUnderground coal mine ground control persists as a unique challenge in rock mass engineering. Fall of roof and rib continue to present a hazard to underground personnel. Stability of underground openings is a prerequisite for successful underground coal mine workings. An adaptation of a civil engineering design standard for analyzing the stability of underground excavations for mining geometries is given here. The ground response curve--developed over seventy years ago for assessing tunnel stability--has significant implications for the design of underground excavations, but has seen little use in complex mining applications. The interaction between the small scale (pillar stress-strain) and the large scale (ground response curve) is studied. Further analysis between these two length scales is conducted to estimate the stress on pillars in a room-and-pillar coal mine. These studies are performed in FLAC3D by implementing a two-scale, two-step approach. This two-scale approach allows for the interaction between the small, pillar scale and the large, panel scale to be studied in a computationally efficient manner.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectNumerical Modelingen_US
dc.subjectRoom-and-Pillar Coal Miningen_US
dc.subjectGround Response Curveen_US
dc.titleNumerical Modeling of Room-and-Pillar Coal Mine Ground Responseen_US
dc.typeDissertationen_US
dc.contributor.departmentMining and Minerals Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMining Engineeringen_US
dc.contributor.committeechairWestman, Erik Christianen_US
dc.contributor.committeememberMurphy, Michael Martinen_US
dc.contributor.committeememberKarfakis, Mario G.en_US
dc.contributor.committeememberRipepi, Nino S.en_US


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