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dc.contributor.authorKim, Kwangminen_US
dc.date.accessioned2014-03-14T20:43:35Z
dc.date.available2014-03-14T20:43:35Z
dc.date.issued2006-07-21en_US
dc.identifier.otheretd-08162006-105831en_US
dc.identifier.urihttp://hdl.handle.net/10919/34582
dc.description.abstractAbstract Few studies of blasting exist because of difficulties in obtaining reliable fragmentation data or even obtaining consistent blasting results. Many researchers have attempted to predict blast fragmentation using the Kuz-Ram model, an empirical fragmentation model suggested by Cunningham. The purpose of this study is to develop an empirical model to relate specific explosives energy (ESE) to blasting fragmentation reduction ratio (RR) and rock fracture toughness (KIC). The reduction ratio was obtained by analyzing the bench face block size distribution and the muck fragment size distribution using image analysis. The fracture toughness was determined using the Edge Notched Disk Wedge Splitting test. Blasting data from twelve (12) blasts at four (4) different quarries were analyzed. Based on this data set, an empirical relationship, ESE=11.7 RR801.202 KIC4.14 has been developed. Using this relationship, based on the predicted blasting energy input for a desired eighty-percent passing (P80) muckpile fragment size the burden and spacing may be determined.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartMin_model.alzen_US
dc.relation.haspartMin_Thesis.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectimage analysisen_US
dc.subjectblastingen_US
dc.subjectfracture toughnessen_US
dc.titleBlasting Design Using Fracture Toughness and Image Analysis of the Bench Face and Muckpileen_US
dc.typeThesisen_US
dc.contributor.departmentMining and Minerals Engineeringen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
dc.contributor.committeechairWestman, Erik Christianen_US
dc.contributor.committeememberNovak, Thomasen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08162006-105831/en_US
dc.contributor.committeecochairKarfakis, Mario G.en_US
dc.date.sdate2006-08-16en_US
dc.date.rdate2006-09-21
dc.date.adate2006-09-21en_US


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