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Project IRSST

Development of a tool to optimize the production of paste overfillMostafa Benzaazoua, Tikou Belem / Université du Québec en Abitibi-Témiscamingue


0099-0850 : Completed

Paste mining backfill is used to stabilize underground excavations but is complex to produce and has related safety problems. No method currently exists to guide the development of cemented paste backfill recipes. Using experimental studies as a basis, the authors have developed mathematical models that predict rather precisely the mechanical strength, consistency, percent solids and the production cost of cemented paste mining backfill. The model’s results have optimized fill properties by taking into account important criteria for the company, namely worker safety and the technique’s feasibility and usefulness. Validated experimentally, the developed models have resulted in the development of a preliminary version of an expert help tool for the production of paste fill recipes. The authors are pursuing their work to improve the tool and extend its utilization possibilities.



IRSST publications
Benzaazoua, Mostafa; Fall, Mamadou; Ouellet, Serge
Étude pluridisciplinaire visant à mettre au point un outil expert pour la prédiction du comportement des remblais en pâte   (Multidisciplinary study to perfect an expert tool for predicting the behaviour of paste backfills)
Études et recherches / Rapport  R-390, Montréal, IRSST, 2004, 28 pages. Free download   More Info

Scientific publications and communicationsBelem T.,  El Aatar O.,  Bussière B.,  Benzaazoua M.,  Fall M.,  Yilmaz E. 
Characterization of self-weight consolidated paste backfill
in International Seminar on Paste and Thickened Tailings - Paste'06, (9th : April 3-7, 2006 : Limerick, Ireland), 2006.

Benzaazoua M.,  Fall M.,  Belem T. 
A contribution to understanding the hardening process of cemented paste backfill
International Journal of Minerals Engineering, vol. 17, no 2, 2004, p. 141-152.

Benzaazoua M.,  Marion P.,  Picquet I.,  Bussière B. 
The use of Pastefill as a Solidification and Stabilization Process for the Control of Acid Mine Drainage
in Processing & Disposal of Mineral Industry Wastes '03 (June 18-20, 2003 : Falmouth, United Kingdom), 2003.

Benzaazoua M.,  Fall M.,  Ouellet B.,  Bussière B.,  Belem T. 
Contribution to understanding the mechanism of cemented paste backfill hardening
in Processing & Disposal of Mineral Industry Wastes '03 (June 18-20, 2003 : Falmouth, United Kingdom), 2003.

Benzaazoua M.,  Belem T.,  Ouellet S.,  Fall M. 
Utilisation du remblai en pâte comme support de terrain. Partie II : comportement a court, a moyen et a long terme
in Après-mines 2003: Impacts et gestion des risques:besoins et acquis de la recherche (5-7 février, 2003 : Nancy, France,), 2003.

Benzaazoua M.,  Belem T.,  Bussière B. 
Chemical aspect of sulfurous paste backfill mixtures
Cement and Concrete Research, vol. 32 no 7, 2002, p. 1133–1144.

Fall M.,  Benzaazoua M. 
Modeling the effect of sulphate on strength development of paste backfill and binder mixture optimization
Cement and Concrete Research, vol. 35, no 2, 2005, p. 301-314.

Fall M.,  Benzaazoua M.,  Ouellet S. 
Experimental characterisation of the influence of mill tailings fineness and density on the quality of cemented paste backfill
Minerals Engineering, vol. 18, no 1, 2004, p. 41-44.

Fall M.,  Benzaazoua M.,  Ouellet S. 
Effect of tailings properties on paste backfill performance
in Proceedings of the 8th International Symposia on Mining with Backfill, (8th : September 19-21, 2004 : Beijing, China), 2004, p. 193-202.

Fall M.,  Benzaazoua M. 
Développement d'un outil expert d'aide à la fabrication des remblais en pâte cimentés
in Compte-rendu du 19e Colloque de contrôle de terrain de l'AMQ, (19e : 2004 : Val D'Or, Canada), 2004, p. 122-146.

Fall M.,  Benzaazoua M. 
Advances in predicting performance properties and cost of paste backfill
in Tailings and Mine Waste 2003 (October 12-15, 2003 : Vail, Colorado). Rotterdam, Balkema, 2003, p. 73–85.

Fall M.,  Benzaazoua M. 
Modelling and simulation of paste backfill performance properties
in Proceedings on the 56th Canadian Geotechnical and 4th Joint IAH-CNC/CGS and the 1st Joint NAGS/CGS Conference : (56th : September 28 - October 1, 2003 : Winnipeg, Canada), 2003, p. 161-169.

Fall M.,  Benzaazoua M. 
A Model for Predicting the Performance of Underground Paste Backfill
in Proceedings on 18th International Conference on Solid Waste Technology and Management (18th : March 23-26, 2003 : Philadelphia, USA), 2003, p. 942-951.

Ouellet S.,  Bussière B.,  Benzaazoua M.,  Aubertin M.,  Fall M.,  Belem T. 
Sulphide reactivity within cemented paste backfill: oxygen consumption test results
in Proceedings on the 56th Canadian Geotechnical and 4th Joint IAH-CNC/CGS and the 1st Joint NAGS/CGS Conference : (September 28 - October 1, 2003 : Winnipeg, Canada), 2003, p. 176-183.

Yilmaz E.,  Kesimal A.,  Ercikdi B.,  Benzaazoua M.,  Belem T.,  Bussière B. 
Short and long terms performance of cemented paste backfill strength
in International Mining Congress & Fair - IMCET2005, (19th : June 9-12, 2005 : Izmir, Turkey), 2005.

Prévention au travail articles

Remblais miniers en pâte  -  La recette logique de la solidité  -  Volume 19, no 2, p. 21. 



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