Abstract
In this work a small displacement finite element model for the coupled hydro-mechanical analysis of concrete dam foundations is adopted. 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. The safety evaluation of the sliding stability of an arch-gravity dam, 83 m high is carried out. The main emphasis is given on the simulation of the drainage system and on the results of sliding stability analysis.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Azevedo, N.M.: A rigid particle discrete element model for the fracture analysis of plane and reinforced concrete. Ph.D thesis, Heriot-Watt University, Scotland (2003)
Barla, G., Bonini, M., Cammarata, G.: Stress and seepage analyses for a gravity dam on a jointed granitic rock mass. In: Proceedings of the 1st International UDEC/3DEC Symposium, Bochum, Germany, pp. 263–268 (2004)
Bear, J.: Dynamics of Fluids in Porous Media. Dover Publications Inc., New York (1988)
Farinha, M.L.B., Lemos, J., Maranha das Neves, E.: Numerical modelling of borehole water inflow tests in the foundation of the Alqueva arch dam. Can. Geotech. J. 48(1), 72–88 (2011)
Farinha, M.L.B., Lemos, J., Maranha das Neves, E.: Analysis of foundation sliding of an arch dam considering the hydromechanical behaviour. Front. Struct. Civil Eng. 6(1), 35–43 (2012)
Farinha, M.L.B., Monteiro Azevedo, N., Candeias, M.: Small displacement coupled analysis of concrete gravity dam foundations: static and dynamic conditions. Rock Mech. Rock Eng. 50(2), 439–464 (2017)
Lemos, J.: Discontinuum models for dam foundation failure analysis. Keynote Lecture. In: 12th International Congress on Rock Mechanics, Beijing, China, 16–21 October 2011
Sá, M.W.V.: Discontinuum models in the three-dimensional analysis of the hydromechanical behaviour of gravity dam foundations (in Portuguese). MSc Dissertation, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Portugal (2019)
Yan, C., Zheng, H.: FDEM-flow3D: a 3D hydro-mechanical coupled model considering the pore seepage of rock matrix for simulating three-dimensional hydraulic fracturing. Comput. Geotech. 81, 212–228 (2017)
Acknowledgements
The study presented here is part of the ongoing project “DAMFA- Cutting-edge solutions for sustainable assessment of concrete dam foundations” carried out jointly by LNEC and FCT/UNL, with the main purpose of developing a numerical multiphysic integrated tool for the sustainable assessment of concrete dam foundations, taking into account the interaction between mechanical, hydraulic and thermal behaviours.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Azevedo, N.M., Braga Farinha, M.L., Freitas, G., Almeida, J.R. (2021). Safety Evaluation of an Arch-Gravity Dam Based on a Small Displacement Hydromechanical Coupled Model. In: Barla, M., Di Donna, A., Sterpi, D. (eds) Challenges and Innovations in Geomechanics. IACMAG 2021. Lecture Notes in Civil Engineering, vol 126. Springer, Cham. https://doi.org/10.1007/978-3-030-64518-2_34
Download citation
DOI: https://doi.org/10.1007/978-3-030-64518-2_34
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-64517-5
Online ISBN: 978-3-030-64518-2
eBook Packages: EngineeringEngineering (R0)