Preliminary communication
https://doi.org/10.31534/engmod.2023.1.ri.04a
Containment Lining Solutions and Hydrodynamic Stability of Tailings Dam
Violeta Mircevska
orcid.org/0000-0002-5447-8371
; Institute of Earthquake Engineering and Engineering Seismology, University of “Ss. Cyril and Methodius”, Todor Aleksandrov Str., 165, P.O. Box 101, 1000 Skopje, R.N. MACEDONIA
Ana Nanevska
orcid.org/0000-0002-3657-9689
; Institute of Earthquake Engineering and Engineering Seismology, University of “Ss. Cyril and Methodius”, Todor Aleksandrov Str., 165, P.O. Box 101, 1000 Skopje, R.N. MACEDONIA
Miroslav Nastev
orcid.org/0000-0003-4822-2537
; Natural Resources Canada, Geological Survey of Canada, Quebec City, CANADA G1K 9A9
Trajce Zafirov
; Institute of Earthquake Engineering and Engineering Seismology, University of “Ss. Cyril and Methodius”, Todor Aleksandrov Str., 165, P.O. Box 101, 1000 Skopje, R.N. MACEDONIA
Abstract
The study investigates the impact of reservoir lining on the hydrodynamic stability of a tailings dam. A 3D coupled fluid-solid finite element model was used for detailed seepage analyses based on conventional flow-net and steady seepage conditions. Pore pressure, stationary seepage velocities, static liquefaction and the ratio between manifested and critical hydraulic gradients were predicted under three different lining conditions. The highest potential for internal erosion and heave was observed in the lined reservoir and starter dam scenario. Although there are environmental benefits, the incorporation of liners in dam design requires a comprehensive engineering assessment of the negative hydrodynamic effects.
Keywords
hydrodynamic stability; tailings dam; stationary seepage; critical erosion zones; heave potential
Hrčak ID:
301683
URI
Publication date:
21.12.2022.
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