The drillability assessment of rocks using the different brittleness values

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dc.authorid0000-0001-7903-143X
dc.contributor.authorYarali, Olgay
dc.contributor.authorKahraman, Sair
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2011
dc.departmentNiğde ÖHÜ
dc.description.abstractThe brittleness is a fundamental rock property and effective in drilling and rock excavation. Knowing the relations between the drillability and the brittleness will help the rock engineers. For this reason, to investigate the relations between the drilling rate index (DRI) and the different brittleness values, 32 different rock types were tested in the laboratory. Uniaxial compressive strength and tensile strength were determined for the brittleness calculations. The brittleness of B-3 (the ratio of compressive strength minus tensile strength to compressive strength plus tensile strength), and the brittleness of B-8 (the half of the product of compressive strength and tensile strength) were calculated from the test results. In addition, Sievers' J-miniature drill test and the brittleness test were carried out and DRI values were calculated. Then, B-3 and B-8 were correlated with DRI values. A good correlation between DRI and the brittleness of B-3 could not be found. However, a strong exponential relation between DRI and the brittleness of B-8 was found. Comparing the results with the literature showed that there was an agreement between this study and previous studies. It can be concluded that B-8 can be used for the assessment of rock drillability. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipTUBITAK [104M437]
dc.description.sponsorshipThis study was supported by TUBITAK under the project number of 104M437. The authors gratefully acknowledge Prof. Dr. Nuh Bilgin (Mining Engineering Department of Istanbul Technical University, Turkey), Prof. Dr. Bjorn Nilsen (NTNIJ, Norway), Filip Dahl (SINTEF, Norway) and Prof. Dr. Amund Bruland (NTNU, Norway).
dc.identifier.doi10.1016/j.tust.2010.11.013
dc.identifier.endpage414
dc.identifier.issn0886-7798
dc.identifier.issue2
dc.identifier.scopus2-s2.0-78751706185
dc.identifier.scopusqualityQ1
dc.identifier.startpage406
dc.identifier.urihttps://dx.doi.org/10.1016/j.tust.2010.11.013
dc.identifier.urihttps://hdl.handle.net/11480/4742
dc.identifier.volume26
dc.identifier.wosWOS:000287631700015
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofTUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDrillability
dc.subjectDrilling rate index
dc.subjectBrittleness
dc.titleThe drillability assessment of rocks using the different brittleness values
dc.typeArticle

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