Abandoned mine remediation measures by chamber filling with granular materials

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dc.contributor.author Castellanza, R en
dc.contributor.author Gerolymatou, E en
dc.contributor.author Nova, R en
dc.date.accessioned 2014-03-01T02:51:02Z
dc.date.available 2014-03-01T02:51:02Z
dc.date.issued 2007 en
dc.identifier.uri http://hdl.handle.net/123456789/35308
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-56249149289&partnerID=40&md5=b2d31f4e833072bc088fe53a986e6246 en
dc.subject.other Axisymmetric analyses en
dc.subject.other Chamber fillings en
dc.subject.other Consolidation theories en
dc.subject.other Experimental datums en
dc.subject.other Filler materials en
dc.subject.other Loss of strengths en
dc.subject.other Mechanical characteristics en
dc.subject.other Mechanical strengths en
dc.subject.other Northern Italy en
dc.subject.other Parametric analysis en
dc.subject.other Pore water pressure generations en
dc.subject.other Remedial measures en
dc.subject.other Three parameters en
dc.subject.other Time to failures en
dc.subject.other Water pressures en
dc.subject.other Compressive strength en
dc.subject.other Erosion en
dc.subject.other Fillers en
dc.subject.other Filling en
dc.subject.other Granular materials en
dc.subject.other Gypsum en
dc.subject.other Lead mines en
dc.subject.other Mines en
dc.subject.other Mining en
dc.subject.other Numerical methods en
dc.subject.other Plants (botany) en
dc.subject.other Room and pillar mining en
dc.subject.other Soil mechanics en
dc.subject.other Strength of materials en
dc.subject.other Water en
dc.subject.other Weathering en
dc.subject.other Abandoned mines en
dc.title Abandoned mine remediation measures by chamber filling with granular materials en
heal.type conferenceItem en
heal.publicationDate 2007 en
heal.abstract Left in place pillars of abandoned mines are subject to weathering (e.g. action of water, bacteria) that degrade their mechanical strength and eventually lead to collapse. A simple weathering model is proposed, that is governed by three parameters: the rate of progression of weathered front, the sharp loss of strength as the rock is wetted and the rate of degradation of the compressive strength with time. An axisymmetric analysis is performed and the variation with time of the bearing capacity of the pillar is given. Experimental data of the tests conducted on gypsum specimens attacked by water are presented and used for estimating the time to failure of an abandoned gypsum mine in Northern Italy. In order to avoid catastrophic collapses, a common remedial measure consists in filling the flooded chambers with granular materials. The aim of this paper is that of investigating the effect of the mechanical characteristics of the filler on the time of mine collapse, induced subsidence and pore water pressure generation. One dimensional consolidation theory is used for the determination of the proportion of overburden weight carried by the solid skeleton of the filler and by water pressure. A parametric analysis is eventually performed for the case of an abandoned gypsum mine in order to determine the most appropriate characteristics of the filler material. © 2007 Taylor & Francis Group. en
heal.journalName Proceedings of the 10th International Symposium on Numerical Models in Geomechanics NUMOG 10 - Numerical Models in Geomechanics NUMOG 10 en
dc.identifier.spage 365 en
dc.identifier.epage 371 en

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