Numerical Modeling of Room-and-Pillar Coal Mine Ground Response

dc.contributor.authorFahrman, Benjamin Paulen
dc.contributor.committeechairWestman, Erik C.en
dc.contributor.committeememberMurphy, Michael M.en
dc.contributor.committeememberKarfakis, Mario G.en
dc.contributor.committeememberRipepi, Nino S.en
dc.contributor.departmentMining and Minerals Engineeringen
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
dc.description.degreePh. D.en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.subjectNumerical Modelingen
dc.subjectRoom-and-Pillar Coal Miningen
dc.subjectGround Response Curveen
dc.titleNumerical Modeling of Room-and-Pillar Coal Mine Ground Responseen
dc.typeDissertationen Engineeringen Polytechnic Institute and State Universityen D.en
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