A new general empirical approach for the prediction of rock mass strengths of soft to hard rock masses

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dc.authoriddinc gogus, ozge/0000-0003-3227-309X
dc.contributor.authorDinc, O. S.
dc.contributor.authorSonmez, H.
dc.contributor.authorTunusluoglu, C.
dc.contributor.authorKasapoglu, K. E.
dc.date.accessioned2025-01-27T20:59:58Z
dc.date.available2025-01-27T20:59:58Z
dc.date.issued2011
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIt is almost impossible to prepare representative cores of rock masses including discontinuities patterns for laboratory studies. To overcome these difficulties, researchers have focused on developing empirical equations for estimating of the stress-strain behavior of a rock mass, including measurements of the discontinuity patterns. As can be seen in the literature, the uniaxial compressive strength value of rock mass (UCSRM) can be estimated by reducing the uniaxial compressive strength of intact rock material (UCSi) based on the quality of a rock mass, represented by variables such as Rock Mass Rating (RMR), Geological Strength Index (GSI) and Q value. For this reason, a unique reducing curve form empirical equation has limited application and generally, cannot be applied to all kind of rock masses from particularly soft to hard rock masses. In this study, a new general empirical approach is constructed to estimate the strength of rock masses of varying hardness. The new empirical equations have been calibrated using data from five slope failures and four sets of uniaxial compressive strength data of rock masses. In the new empirical equations, the UCSi is considered not only to be a scale parameter used in the strength reduction but also used to adjust the degree of strength reduction in conjunction with elastic modulus of the rock material (E-i). The disturbance factor on the rock mass is taken into consideration by two separate reduction factors applied to the Structure Rating (SR) to capture increasing joint density, and to the s and m(b) parameters of the Hoek-Brown criterion, to decrease the degree of interlocking. Hence, non-interlocked (cohesionless under zero normal stress) rock masses such as spoil piles can also be modeled in the new empirical approach. (C) 2011 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipTUBITAK [108Y002]
dc.description.sponsorshipThis study was prepared from the findings of research project supported by TUBITAK (Project no. 108Y002). The authors thank to Robert Zimmerman and Ed Medley for their valuable comments as technical advisors of the project. In addition, the authors thank to Arild Palmstrom for his permission to use the UCSRM data given in his Ph.D. thesis, and to anonymous reviewers for their valuable comments.
dc.identifier.doi10.1016/j.ijrmms.2011.03.001
dc.identifier.endpage665
dc.identifier.issn1365-1609
dc.identifier.issn1873-4545
dc.identifier.issue4
dc.identifier.scopus2-s2.0-79956087523
dc.identifier.scopusqualityQ1
dc.identifier.startpage650
dc.identifier.urihttps://doi.org/10.1016/j.ijrmms.2011.03.001
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26895
dc.identifier.volume48
dc.identifier.wosWOS:000290783300013
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Rock Mechanics and Mining Sciences
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectDisturbance
dc.subjectFailure criterion
dc.subjectHoek and Brown criterion
dc.subjectRock mass strength
dc.subjectSoft rock mass
dc.titleA new general empirical approach for the prediction of rock mass strengths of soft to hard rock masses
dc.typeArticle

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