A modified Hoek-Brown failure criterion for anisotropic intact rock

Saroglou, H; Tsiambaos, G

dc.contributor.author	Saroglou, H	en
dc.contributor.author	Tsiambaos, G	en
dc.date.accessioned	2014-03-01T01:27:42Z
dc.date.available	2014-03-01T01:27:42Z
dc.date.issued	2008	en
dc.identifier.issn	1365-1609	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18550
dc.subject	Anisotropy	en
dc.subject	Failure criteria	en
dc.subject	Intact rock	en
dc.subject	Laboratory tests	en
dc.subject	Metamorphic rocks	en
dc.subject	Strength	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	Anisotropy	en
dc.subject.other	Failure (mechanical)	en
dc.subject.other	Metamorphic rocks	en
dc.subject.other	Sedimentary rocks	en
dc.subject.other	Strength of materials	en
dc.subject.other	Anisotropic intact rock	en
dc.subject.other	Foliation plane	en
dc.subject.other	Intact rock	en
dc.subject.other	Rock mechanics	en
dc.subject.other	anisotropy	en
dc.subject.other	failure analysis	en
dc.subject.other	Hoek-Brown criterion	en
dc.subject.other	loading	en
dc.subject.other	metamorphic rock	en
dc.subject.other	rock mechanics	en
dc.subject.other	triaxial test	en
dc.title	A modified Hoek-Brown failure criterion for anisotropic intact rock	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijrmms.2007.05.004	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijrmms.2007.05.004	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The Hoek-Brown criterion parameters (sigma(ci), m(i) and s) are significantly influenced by the strength anisotropy of intact rock. In the present study, the criterion was modified by incorporating a new parameter (k(beta)) to account for the effect of strength anisotropy, thus being able to determine the strength of intact anisotropic rock under loading in different orientations of the plane of anisotropy. The range of the parameter (k(beta)) for the rocks tested has been analytically investigated by carrying out triaxial tests, in different orientations of the foliation plane. The proposed modification was studied for metamorphic rocks (gneiss, schist, marble), but could also be applied to other rock types exhibiting "inherent" anisotropy, e.g. sedimentary as well as igneous rocks. The proposed modified criterion is intended for use for prediction of strength of intact rock, but can also be extended to rock masses. (c) 2007 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Rock Mechanics and Mining Sciences	en
dc.identifier.doi	10.1016/j.ijrmms.2007.05.004	en
dc.identifier.isi	ISI:000253723700009	en
dc.identifier.volume	45	en
dc.identifier.issue	2	en
dc.identifier.spage	223	en
dc.identifier.epage	234	en