Strength of a blocky rock mass based on 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	2014-03-01T01:34:41Z
dc.date.available	2014-03-01T01:34:41Z
dc.date.issued	2010	en
dc.identifier.issn	1365-1609	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20797
dc.subject	Barton-Bandis failure criterion	en
dc.subject	Jointed rock strength	en
dc.subject	Plane of weakness	en
dc.subject	UDEC	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	Biaxial compressive tests	en
dc.subject.other	Blocky rock mass	en
dc.subject.other	Design and construction	en
dc.subject.other	Different modes	en
dc.subject.other	Discrete element codes	en
dc.subject.other	Experimental methods	en
dc.subject.other	Failure criteria	en
dc.subject.other	Fractured rock	en
dc.subject.other	Geological process	en
dc.subject.other	Joint set	en
dc.subject.other	Jointed rock	en
dc.subject.other	Non-linear	en
dc.subject.other	Numerical results	en
dc.subject.other	Physical experiments	en
dc.subject.other	Rock mass	en
dc.subject.other	Theoretical result	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Rock mechanics	en
dc.subject.other	Shear strength	en
dc.subject.other	Structures (built objects)	en
dc.subject.other	Rocks	en
dc.subject.other	biaxial test	en
dc.subject.other	civil engineering	en
dc.subject.other	compressive strength	en
dc.subject.other	design	en
dc.subject.other	discrete element method	en
dc.subject.other	experimental study	en
dc.subject.other	failure analysis	en
dc.subject.other	joint	en
dc.subject.other	mining	en
dc.subject.other	nonlinearity	en
dc.subject.other	numerical model	en
dc.subject.other	rock mass classification	en
dc.subject.other	rock mechanics	en
dc.subject.other	shear strength	en
dc.subject.other	theoretical study	en
dc.subject.other	weak rock	en
dc.title	Strength of a blocky rock mass based on an extended plane of weakness theory	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijrmms.2010.01.008	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijrmms.2010.01.008	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	The strength of a rock mass is the major factor affecting the design and construction of civil and mining structures built in or on rock. Rock masses are usually fractured, as a result of various geological processes over time. The effect of joints on the strength of a rock has been studied mainly using analytical or experimental methods, whereas the strength of fractured rock is usually expressed in terms of empirical failure criteria. In this study, the original plane of weakness theory is presented and applied to rock models with various numbers of joint sets persistent or not. Biaxial compressive tests are then performed on the same specimens using a discrete element code. To account for the roughness of the discontinuities, the original theory is extended, by imposing the nonlinear Barton-Bandis shear strength criterion for the discontinuities. This extended theory of one plane of weakness is validated against the responses of discrete numerical rock models with various combinations of fracturing. Both, the original and extended theories, are then applied to simulate the response of physical experiments undertaken by several researchers, in order to investigate their validity and the bounds of their usage. The numerical results are in accordance with the theoretical ones, while the theoretical results have an either quantitative or qualitative similarity with the experimental ones. Quantitative differences appear especially when the specimens fail in different modes than assumed by the models. (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.2010.01.008	en
dc.identifier.isi	ISI:000277784800005	en
dc.identifier.volume	47	en
dc.identifier.issue	4	en
dc.identifier.spage	568	en
dc.identifier.epage	582	en