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dc.contributor.authorFreitas, G.pt_BR
dc.contributor.authorBraga Farinha, M. L.pt_BR
dc.contributor.authorAzevedo, N.pt_BR
dc.contributor.authorRocha de Almeida, J.pt_BR
dc.contributor.authorSá, M.pt_BR
dc.contributor.authorLeitão, N. S.pt_BR
dc.contributor.editorCarlos Pinapt_BR
dc.contributor.editorEliane Portelapt_BR
dc.contributor.editorJoão Mansopt_BR
dc.contributor.editorMargarida Espadapt_BR
dc.description.abstractThe analysis of the hydromechanical behaviour of concrete dam foundations requires coupled models which account for the role of deformation in fluid flow and the stability of the rock mass. In this study the hydromechanical analysis is performed by means of an explicit time stepping small displacement algorithm, Parmac3D-Fflow, based on a discrete representation of the discontinuities. In order to evaluate the practical importance of stress-sensitive fluid flow in rock mass discontinuities a case study is presented of an arch-gravity dam, 83 m high. Especial attention is given to boundary conditions, drainage system simulation and sets of mechanical and hydraulic parameters that may control flow and stress behavior. This paper presents the results of the application of a 3D discontinuum hydromechanical model for the analysis of the behaviour of the dam foundation. In this hydromechanical model the hydraulic behaviour is simulated assuming that seepage takes place along channels located at the edges of the triangular interface elements which simulate the various discontinuities. In the study presented here the main emphasis is on the simulation of the drainage system and on the results of sliding stability analysis. Conclusions are drawn regarding the safety factors obtained using the traditional method of strength reduction and other methods in which the hydrostatic load is gradually increased.pt_BR
dc.subjectconcrete damspt_BR
dc.subjectrock foundationspt_BR
dc.subjecthydromechanical behaviourpt_BR
dc.subjectnumerical modellingpt_BR
dc.subjectfailure analysispt_BR
dc.titleDiscontinuous hydromechanical modelling of concrete dam foundationspt_BR
dc.description.volumeVol. 1pt_BR
dc.description.magazineProceedings of the Fourth International DAM WORLD Conferencept_BR
dc.identifier.conftitleDamWorld Webinarpt_BR
Appears in Collections:DBB/NO - Comunicações a congressos e artigos de revista

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