The elusive load transference of stratified rock roof

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dc.contributor.author Yiouta-Mitra, P en
dc.contributor.author Sofianos, AI en
dc.date.accessioned 2014-03-01T02:53:29Z
dc.date.available 2014-03-01T02:53:29Z
dc.date.issued 2011 en
dc.identifier.issn 08950563 en
dc.identifier.uri http://hdl.handle.net/123456789/36358
dc.subject Load transfer en
dc.subject Mining en
dc.subject Rocks en
dc.subject Roofs en
dc.subject.other Average force en
dc.subject.other Bolting system en
dc.subject.other Elastic beam en
dc.subject.other Finite difference en
dc.subject.other Load transfer en
dc.subject.other Load transference en
dc.subject.other Mechanical behavior en
dc.subject.other Per unit en
dc.subject.other Stratified rocks en
dc.subject.other Stress functions en
dc.subject.other Underground opening en
dc.subject.other Varying thickness en
dc.subject.other Vertical stress en
dc.subject.other Civil engineering en
dc.subject.other Geotechnical engineering en
dc.subject.other Mine roof control en
dc.subject.other Roofs en
dc.subject.other Loads (forces) en
dc.title The elusive load transference of stratified rock roof en
heal.type conferenceItem en
heal.identifier.primary 10.1061/41165(397)264 en
heal.identifier.secondary http://dx.doi.org/10.1061/41165(397)264 en
heal.publicationDate 2011 en
heal.abstract A roof of an underground opening composed of horizontally bedded competent rock is commonly encountered in mining and civil engineering. The mechanical behavior of such roof resembles a stack of elastic beams rigidly or compliantly confined at the abutments and sagging under their own weight. The clamping action of a bolting system will forestall slip between strata. When the strata vary in thickness, it has been largely assumed that considering friction and suspension effects, the average force per unit area exerted by the bolt system should include an elusively defined transferred load Δq. The purpose of this research is to analytically and numerically calculate this transferred load, taking into consideration all related parameters. A stress function solution of a gravity beam is proposed to account for the load transference, i.e. the vertical stress component sgr;yy. A two-member stratified roof with strata of varying thickness is then modeled with a finite differences code and the results are used to verify the assumptions. Limits of applicability of load transference are prescribed for the specific cases that are analyzed. © 2011 ASCE. en
heal.journalName Geotechnical Special Publication en
dc.identifier.doi 10.1061/41165(397)264 en
dc.identifier.issue 211 GSP en
dc.identifier.spage 2584 en
dc.identifier.epage 2593 en

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