An improved method of fitting experimental data to the Hoek-Brown failure criterion

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dc.authoridSari, Mehmet -- 0000-0001-9441-9256;
dc.contributor.authorSarı, Mehmet
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:26:49Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:26:49Z
dc.date.issued2012
dc.departmentMühendislik Fakültesi
dc.description.abstractIn this study, a special fitting technique is proposed to apply the Hoek-Brown failure criterion to available laboratory strength data collected on samples of Ankara andesites. The original method of fitting the Hoek-Brown failure criterion using the spreadsheet and the fitting method utilized in the RocLab software are statistically compared with this new modified nonlinear fitting technique. The Hoek-Brown failure parameters obtained by a simple multiple regression technique, utilizing the solver function within an Excel spreadsheet and the revised least squares procedure significantly improved the fitness of the Hoek-Brown envelope especially within the tensile and high confining stresses. The Brazilian tensile strength is found to be a useful parameter to fix a rock failure criterion at low confining stresses, particularly, in the tensile region. If tensile, uniaxial and triaxial test results are available, when compared to two existing fitting methods the modified multiple regression method is found to predict more precise tensile and compressive strengths, and material constant m(i) for the Hoek-Brown failure criterion. (C) 2011 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.enggeo.2011.12.011
dc.identifier.endpage35en_US
dc.identifier.issn0013-7952
dc.identifier.scopusqualityQ1
dc.identifier.startpage27en_US
dc.identifier.urihttps://doi.org/10.1016/j.enggeo.2011.12.011
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5718
dc.identifier.volume127en_US
dc.identifier.wosWOS:000301696300003
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofEngineering Geology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectUniaxial Compressive Strength
dc.subjectBrazilian Tensile Strength
dc.subjectNormal Distribution
dc.subjectLeast-square Curve Fitting
dc.subjectHoek-Brown Failure Criterion
dc.subjectAnkara Andesite
dc.titleAn improved method of fitting experimental data to the Hoek-Brown failure criterion
dc.typeArticle

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