Comparison of input parameters regarding rock mass in analytical solution and numerical modelling

Basit Öğe Kaydı
dc.contributor.authorYaşıtlı, Nazmi Erhan
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T09:15:30Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T09:15:30Z
dc.date.issued2016
dc.departmentMühendislik Fakültesi
dc.description.abstractCharacteristics of stress redistribution around a tunnel excavated in rock are of prime importance for an efficient tunnelling operation and maintaining stability. As it is a well known fact that rock mass properties are the most important factors affecting stability together with in-situ stress field and tunnel geometry. Induced stresses and resultant deformation around a tunnel can be approximated by means of analytical solutions and application of numerical modelling. However, success of these methods depends on assumptions and input parameters which must be representative for the rock mass. However, mechanical properties of intact rock can be found by laboratory testing. The aim of this paper is to demonstrate the importance of proper representation of rock mass properties as input data for analytical solution and numerical modelling. For this purpose, intact rock data were converted into rock mass data by using the Hoek-Brown failure criterion and empirical relations. Stress-deformation analyses together with yield zone thickness determination have been carried out by using analytical solutions and numerical analyses by using FLAC(3D) programme. Analyses results have indicated that incomplete and incorrect design causes stability and economic problems in the tunnel. For this reason during the tunnel design analytical data and rock mass data should be used together. In addition, this study was carried out to prove theoretically that numerical modelling results should be applied to the tunnel design for the stability and for the economy of the support.
dc.identifier.doi10.1016/j.jafrearsci.2016.08.010
dc.identifier.endpage504en_US
dc.identifier.issn1464-343X
dc.identifier.issn1879-1956
dc.identifier.scopusqualityQ1
dc.identifier.startpage497en_US
dc.identifier.urihttps://doi.org/10.1016/j.jafrearsci.2016.08.010
dc.identifier.urihttps://hdl.handle.net/20.500.12451/4399
dc.identifier.volume124en_US
dc.identifier.wosWOS:000389388700035
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science
dc.relation.ispartofJournal of African Earth Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectNumerical Modelling
dc.subjectAnalytical Solution
dc.subjectHoek-Brown Failure Criterion
dc.subjectFLAC(3D)
dc.titleComparison of input parameters regarding rock mass in analytical solution and numerical modelling
dc.typeArticle

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