Correlation of the Hoek-Brown failure criterion for a sparsely jointed rock mass with an extended plane of weakness theory

Halakatevakis, N; Sofianos, AI

dc.contributor.author	Halakatevakis, N	en
dc.contributor.author	Sofianos, AI	en
dc.date.accessioned	2014-03-01T01:33:05Z
dc.date.available	2014-03-01T01:33:05Z
dc.date.issued	2010	en
dc.identifier.issn	1365-1609	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20308
dc.subject	Barton-Bandis	en
dc.subject	Discrete model	en
dc.subject	Hoek-Brown	en
dc.subject	Plane of weakness	en
dc.subject	Rock mass	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	Barton-Bandis	en
dc.subject.other	Discrete models	en
dc.subject.other	Hoek-Brown	en
dc.subject.other	Plane of weakness	en
dc.subject.other	Rock mass	en
dc.subject.other	Rock mechanics	en
dc.subject.other	Structures (built objects)	en
dc.subject.other	Rocks	en
dc.subject.other	anisotropy	en
dc.subject.other	discrete element method	en
dc.subject.other	empirical analysis	en
dc.subject.other	estimation method	en
dc.subject.other	failure mechanism	en
dc.subject.other	Hoek-Brown criterion	en
dc.subject.other	in situ stress	en
dc.subject.other	inhomogeneity	en
dc.subject.other	mining	en
dc.subject.other	rock mass response	en
dc.subject.other	shear strength	en
dc.title	Correlation of the Hoek-Brown failure criterion for a sparsely jointed rock mass with an extended plane of weakness theory	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijrmms.2010.06.017	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijrmms.2010.06.017	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	An appropriate estimate of rock mass strength is necessary for the design of civil and mining structures built in or on rock. Rock mass is an in homogeneous and an isotropic material with complex behaviour, which contains random planes of discontinuities that tend to reduce its strength. The direct estimation of this strength is practically unfeasible, due to difficulties in sampling and testing. This has led to the development of empirical failure criteria. These, express the strength of the rock mass interms of properties of the intact rock and the discontinuities. The Hoek-Brown criterion is the most widely accepted one. However, albeit its use for many years, no experimental in situ validation with the actual rock mass strength has been demonstrated. Therefore, the Hoek-Brown criterion is investigated analytically through an extended plane of weakness theory, already validated with experimental evidence on physical specimens. Various intact rock qualities with blocky and very blocky structure are examined. The results indicated eviations in the rock mass strength predicted by the two approaches, especially when the intact rock strength is low. (c) 2010 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.2010.06.017	en
dc.identifier.isi	ISI:000281930000010	en
dc.identifier.volume	47	en
dc.identifier.issue	7	en
dc.identifier.spage	1166	en
dc.identifier.epage	1179	en