[en] Flowslides induced by the failure of tailing dams or waste dumps constitute significant industrial hazards. Examples in the past have demonstrated their high potential for casualties and damage. Geotechnical analyses provide nothing more than the failure criteria. In contrast, once the structure fails, the fluidized material propagates rapidly as a non-Newtonian flow, requiring thus a hydraulic analysis. This paper presents an advanced 2D depth-averaged flow model which accommodates the particular rheology of flowslides, including visco-plasticity and frictional behavior accounting for pore pressure. Based on mass and momentum conservation for the mixture of soil and interstitial fluid, the finite volume model handles flow propagation on dry areas and includes an original treatment of the yield stress in 2D. At a crossroads of geotechnical and hydraulic engineering, the paper depicts the elaboration and validation of a new model readily available for hazard mapping, including extent of affected areas, maximum depths and arrival time.
Research center :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Dewals, Benjamin ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Archambeau, Pierre ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Detrembleur, Sylvain ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Erpicum, Sébastien ; Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Scientifiques attachés au Doyen (Sc.appliquées)
Pirotton, Michel ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Language :
English
Title :
Depth-averaged flowslides model: validation and application to tailings dams and waste dumps failures
Publication date :
2011
Event name :
34th IAHR World Congress - Balance and Uncertainty: Water in a Changing World
Event organizer :
International Association for Hydro-Environment Engineering and Research
Event place :
Brisbane, Australia
Event date :
26 June to 1 July 2011
Audience :
International
Main work title :
Proc. of the 34th IAHR World Congress: Balance and Uncertainty: Water in a Changing World
Denlinger, R. P. and Iverson, R. M. (2004), Granular avalanches across irregular three-dimensional terrain: 1. Theory and computation, J. Geophys. Res.-Earth Surface, 109 (F1), p F01014.
Dewals, B., Rulot, F., Erpicum, S., Archambeau, P. and Pirotton, M. (2011a), Advanced topics in sediment transport modelling: non-alluvial beds and hyperconcentrated flows, "Sediment transport", p 30.
Dewals, B. J., Erpicum, S., Archambeau, P., Detrembleur, S. and Pirotton, M. (2006), Depth-integrated flow modelling taking into account bottom curvature, J. Hydraul. Res., 44 (6), pp 787-795.
Dewals, B. J., Erpicum, S., Archambeau, P., Detrembleur, S. and Pirotton, M. (2008a), Hétérogénéité des échelles spatio-temporelles d'écoulements hydrosédimentaires et modélisation numérique, Houille Blanche-Rev. Int., 5, pp 109-114.
Dewals, B. J., Erpicum, S., Detrembleur, S., Archambeau, P. and Pirotton, M. (2011b), Failure of dams arranged in series or in complex, Natural Hazards, 56 (3), pp 917-939.
Dewals, B. J., Kantoush, S. A., Erpicum, S., Pirotton, M. and Schleiss, A. J. (2008b), Experimental and numerical analysis of flow instabilities in rectangular shallow basins, Environ. Fluid Mech., 8, pp 31-54.
Dewals, B. J., Rulot, F., Erpicum, S., Archambeau, P. and Pirotton, M. (2010), Long-term sediment management for sustainable hydropower, in Sayigh, A., "Comprehensive Renewable Energy. Volume 6 - Hydro Power", Oxford.
Ernst, J., Dewals, B. J., Detrembleur, S., Archambeau, P., Erpicum, S. and Pirotton, M. (2010), Micro-scale flood risk analysis based on detailed 2D hydraulic modelling and high resolution land use data, Nat. Hazards, 55 (2), pp 181-209.
Erpicum, S., Dewals, B. J., Archambeau, P., Detrembleur, S. and Pirotton, M. (2010a), Detailed inundation modelling using high resolution DEMs, Engineering Applications of Computational Fluid Mechanics, 4 (2), pp 196-208.
Erpicum, S., Dewals, B. J., Archambeau, P. and Pirotton, M. (2010b), Dam-break flow computation based on an efficient flux-vector splitting, J. Comput. Appl. Math., 234 (7), pp 2143-2151.
Erpicum, S., Meile, T., Dewals, B. J., Pirotton, M. and Schleiss, A. J. (2009), 2D numerical flow modeling in a macro-rough channel, Int. J. Numer. Methods Fluids, 61 (11), pp 1227-1246.
Hutter, K., Siegel, M., Savage, S. B. and Nohguchi, Y. (1993), Two-dimensional spreading of a granular avalanche down an inclined plane Part I. theory, Acta Mechanica, 100 (1-2), p 37?68.
Iverson, R. M. and Denlinger, R. P. (2001), Flow of variably fluidized granular masses across three-dimensional terrain: 1. Coulomb mixture theory, J. Geophys. Res, 106, pp 537-552.
Jeyapalan, J. K., Duncan and Seed (1983), Investigation of flow failures of tailings dams, Journal of Geotechnical Engineering, 109 (2), pp 172-189.
Kaitna, R. and Rickenmann, D. (2007), A new experimental facility for laboratory debris flow investigation, Journal of Hydraulic Research, 45 (6), pp 797-810.
Khuat Duy, B., Archambeau, P., Dewals, B. J., Erpicum, S. and Pirotton, M. (2010), River modelling and flood mitigation in a Belgian catchment, Proc. Inst. Civil. Eng.-Water Manag., 163 (8), pp 417-423.
Laigle, D. and Coussot, P. (1997), Numerical modeling of mudflows, Journal of Hydraulic Engineering, 123 (7), pp 617-623.
Mangeney-Castelnau, A., Bouchut, F., Vilotte, J. P., Lajeunesse, E., Aubertin, A. and Pirulli, M. (2005), On the use of Saint Venant equations to simulate the spreading of a granular mass, J. Geophys. Res, 110, p B09103.
Pastor, M., Quecedo, M., Gonzalez, E., Herreros, M. I., Merodo, J. A. F., Merodo, J. A. F. and Mira, P. (2004), Simple approximation to bottom friction for Bingham fluid depth integrated models, Journal of Hydraulic Engineering, 130 (2), pp 149-155.
Pastor, M., Quecedo, M., Merodo, J. A. F., Herrores, M. I., Gonzalez, E. and Mira, P. (2002), Modelling tailings dams and mine waste dumps failures, Geotechnique, 52 (8), pp 579-591.
Quecedo, M., Pastor, M., Herreros, M. I. and Merodo, J. (2004), Numerical modelling of the propagation of fast landslides using the finite element method, Int. J. Numer. Methods Engng, 59, pp 755-794.
Roger, S., Dewals, B. J., Erpicum, S., Schwanenberg, D., Schüttrumpf, H., Köngeter, J. and Pirotton, M. (2009), Experimental und numerical investigations of dike-break induced flows, J. Hydraul. Res., 47 (3), pp 349-359.
Savage, S. B. and Hutter, K. (1989), The motion of a finite mass of granular material down a rough incline, Journal of Fluid Mechanics, 199, pp 177-215.
