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dc.contributor.author Nawarathna, THK
dc.contributor.author Kulathilake, LKNS
dc.contributor.author Perera, HDH
dc.contributor.author Premalal, PAM
dc.contributor.author Dharmaratne, PGR
dc.contributor.author Chaminda, SP
dc.contributor.author Rohitha, LPS
dc.contributor.editor Ratnayake, NP
dc.contributor.editor Abeysinghe, AMKB
dc.contributor.editor Premasiri, HMR
dc.contributor.editor Karunaratne, S
dc.date.accessioned 2022-06-27T05:34:12Z
dc.date.available 2022-06-27T05:34:12Z
dc.date.issued 2010-09
dc.identifier.citation Nawarathna, T.H.K., Kulathilake, L.K.N.S., Perera, H.D.H., Premalal, P.A.M., Dharmaratne, P.G.R., Chaminda, S.P., & Rohitha, L.P.S. (2010). Effects of discontinuous properties on the stability of tunnels. In N. P. Ratnayake, A.M.K.B. Abeysinghe, H.M.R. Premasiri & S. Karunaratne (Eds.), Proceedings of the 5th Annual Conference on Earth Resources for National Development (pp. 46-48). Department of Earth Resources Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18383
dc.description.abstract Many failures of underground openings during excavation are closely related to discontinuous properties of the surrounding rock mass and they affect differently to the stability of underground openings. In this research, attempts have been made to study the effect of discontinuities over the rock mass stability with various infilling materials, dip angles and strikes by using laboratory scaled models. Specimens were casted using cement concrete mixture and five different dip angles (30°, 45°, 60°, 75°, 90°) and three infilling materials (quarry dust, kaolin and graphite) have been selected for the study. Models were tested to determine their uni-axial compressive strength. The results indicate that the dip angle of the joints and the orientations of the tunnel axis have significant impacts on the stability of the tunnel. The dip angle at 90°, perpendicular to the tunnel axis shows a higher stability while the angle at 45°, shows the lowest stability. The tunnels excavated with axis parallel to the discontinuous plane should be avoided as much as possible. If it is unavoidable in any circumstances, well designed support system should be used. Types of infilling materials also affect the stability of the tunnel with graphite being the most unfavourable among the selected materials. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Dip angle en_US
dc.subject Infilling en_US
dc.subject Strike en_US
dc.subject Tunnel axis en_US
dc.title Effects of discontinuous properties on the stability of tunnels en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2010 en_US
dc.identifier.conference 5th Annual Conference on Earth Resources for National Development en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 45-48 en_US
dc.identifier.proceeding Proceedings of the 5th Annual Conference on Earth Resources for National Development en_US
dc.identifier.email dharme27@yahoo.com en_US


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