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 |