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Numerical analyses of the effectiveness of secondary tailgate support systems: a stability approach

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dc.contributor.authorHosca, Erhanen
dc.contributor.committeechairHaycocks, Christopheren
dc.contributor.committeememberKarmis, Michael E.en
dc.contributor.committeememberSmith, Charles W.en
dc.contributor.departmentMining Engineeringen
dc.date.accessioned2014-03-14T21:30:55Zen
dc.date.adate2009-03-04en
dc.date.available2014-03-14T21:30:55Zen
dc.date.issued1995-01-15en
dc.date.rdate2009-03-04en
dc.date.sdate2009-03-04en
dc.description.abstractA numerical model was developed to analyze the effectiveness of active and passive secondary support systems on the stability of a retreating longwall tailgate opening. The range of loading conditions that any tailgate can be subjected to was identified to form the basis of numerical modeling. The tailgate entry was considered as a part of roof-pillar-floor system, whose behavior is controlled largely by the structural integrity of each member. Numerical modeling was then conducted on tailgate openings to determine roof, floor, and rib responses, including failure modes to a variety of loading conditions for wood cribs and roof trusses employed as active and passive means of secondary support. Trends were developed from numerical modeling to determine optimum load capacity and paints of application for reducing the potential for entry failure.en
dc.description.degreeMaster of Scienceen
dc.format.extentx, 134 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03042009-040821en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03042009-040821/en
dc.identifier.urihttp://hdl.handle.net/10919/41414en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1995.H673.pdfen
dc.relation.isformatofOCLC# 32228663en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1995.H673en
dc.subject.lcshGate roads (Mining) -- Mathematical modelsen
dc.subject.lcshMaterials -- Dynamic testingen
dc.titleNumerical analyses of the effectiveness of secondary tailgate support systems: a stability approachen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMining Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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