A new approach for applying the in-situ Schmidt hammer test on a coal face

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dc.contributor.authorOzkan, Ihsan
dc.contributor.authorBilim, Niyazi
dc.date.accessioned2020-03-26T17:26:19Z
dc.date.available2020-03-26T17:26:19Z
dc.date.issued2008
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe indirect Schmidt hammer test is used to determine the mechanical behavior of rock materials. The method has so far been widely applied to intact rock, and therefore researchers have developed procedures for its use on rock cores and blocks. However, there is currently little information about using the Schmidt hammer for in-situ testing. The purpose of this study was therefore to evaluate the application of the Schmidt hammer test in-situ on a coal face. In this study, a measurement area of 72 m(2) was selected in the center of a 330 m(2) longwall face. The main measurement area was divided into a grid system, with each grid section having an area of 0.375 m(2). The tests were conducted as a single hammer impact at the center of each grid section. One thousand nine hundred and sixty-five records were constructed using the data obtained from 10 face positions, and these were used for statistical analyses. The statistical results suggested that the total number of tests carried out on the main measurement area was more than the minimum required. An equation was then developed that not only gives the appropriate test number, but also provides information about the grid system. Hence, a new approach is proposed for determining the optimum grid system and test number for in-situ testing of coal faces. (C) 2007 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.ijrmms.2007.09.012en_US
dc.identifier.endpage898en_US
dc.identifier.issn1365-1609en_US
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage888en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.ijrmms.2007.09.012
dc.identifier.urihttps://hdl.handle.net/20.500.12395/22157
dc.identifier.volume45en_US
dc.identifier.wosWOS:000256907100005en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.ispartofINTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCESen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectSchmidt hammeren_US
dc.subjectin-situ testen_US
dc.subjectcoal faceen_US
dc.subjectoptimum test numberen_US
dc.subjectgrid systemen_US
dc.subjectrebound valueen_US
dc.titleA new approach for applying the in-situ Schmidt hammer test on a coal faceen_US
dc.typeArticleen_US

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