Tunnelling in overstressed rock

Hoek, E; Marinos, PG

dc.contributor.author	Hoek, E	en
dc.contributor.author	Marinos, PG	en
dc.date.accessioned	2014-03-01T02:52:47Z
dc.date.available	2014-03-01T02:52:47Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36066
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-79961031975&partnerID=40&md5=42e2953ccf0d36085b7d83455d4b0952	en
dc.subject.other	Empirical techniques	en
dc.subject.other	Insitu stress	en
dc.subject.other	Intact rocks	en
dc.subject.other	Overstressing	en
dc.subject.other	Rock mass	en
dc.subject.other	Shear failure	en
dc.subject.other	Shear zone	en
dc.subject.other	Tunnel stability	en
dc.subject.other	Brittle fracture	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Rock mechanics	en
dc.subject.other	Rocks	en
dc.subject.other	Safety engineering	en
dc.subject.other	Tunnels	en
dc.title	Tunnelling in overstressed rock	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	Overstressing of the rock surrounding a tunnel can result in either brittle fracture of the intact rock or shear failure along pre-existing discontinuities such as joints or shear zones. These two types of failure can co-exist and the extent to which the failures propagate depends upon the characteristics of the rock mass, the magnitude and directions of the in situ stresses, the shape of the tunnel and the intensity and orientation of the discontinuities. Numerical analysis plays an increasingly important role in the assessment of tunnel stability and design of reinforcement and support. Rapid evolution of computer software and hardware offers the potential for the calibration or possible elimination of some of the empirical techniques upon which tunnel designers have to rely. © 2010 Taylor & Francis Group, London.	en
heal.journalName	Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst - Proceedings of the Regional Symposium of the International Society for Rock Mechanics, EUROCK 2009	en
dc.identifier.spage	49	en
dc.identifier.epage	60	en