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Project IRSST

Development of an integrated method for analyzing the stability of backfilled stopeTikou Belem / Université du Québec en Abitibi-Témiscamingue
Michel Aubertin, Li Li, Richard Simon / École Polytechnique
Bruno Bussière, Mostafa Benzaazoua / Université du Québec en Abitibi-Témiscamingue


0099-2930 : Completed

When mining operations require the use of cemented paste backfill (CPB), a system must be planned that provides the desired structural stability and safe space. Generally, the confined block model combined with a high safety factor is used to estimate the strength of the CPB required, and then formulations of mixtures of paste backfill are optimized in order to choose the best, according to the case. However, since the confined block was planned for a backfill with an internal friction angle of zero, limiting oneself to this single model shows a lack of knowledge about the subject, even while admitting that the friction angle would tend towards zero over the long term. In fact, the short and medium terms should also be taken into account. This study consisted of numerous experimental tests for the purpose of developing models for predicting and evaluating the distribution of stresses in backfilled sites. These models show the existence and variation in arching, which has direct impacts on costs. This report proposes a method for analyzing the stability of backfilled mining sites that integrates all the components of CPB. The method mainly allows the theoretical value of the required strength to be estimated, which helps meet the objectives due to the targeted optimization of mixture formulations.



IRSST publications
Belem, Tikou; Aubertin, Michel; Li, Li; Fall, Mamadou
Développement d’une méthode intégrée d’analyse de stabilité des chantiers miniers remblayés   (Development of an integrated method for analyzing the stability of backfilled stope)
Études et recherches / Rapport  R-622, Montréal, IRSST, 2009, 99 pages. Free download   More Info

Scientific publications and communicationsAubertin M.,  Li L.,  Belem T.,  Simon R.,  Harvey A.,  James M.,  Benzaazoua M.,  Bussière B. 
Méthodes d'estimation des pressions induites dans les chantiers remblayés
in Symposium 2005 sur l'environnement et les mines, (2e : 15-18 mai, 2005 : Rouyn-Noranda, Canada), 2005.

Aubertin M.,  Li L.,  Simon R.,  Boulianne M. 
Invited communication: A general inelastic criterion for geomaterials with variable porosity: Formulation and sample applications
in The 2005 Joint ASME/ASCE/SES Conference on Mechanics and Materials, (June 1-3, 2005 : Baton Rouge, U.S.A.), 2005.

Aubertin M.,  Li L. 
A porosity-dependent inelastic criterion for engineering materials
International Journal of Plasticity, vol. 20, no 12, 2004, p. 2179-2208.

Aubertin M.,  Li L. 
A unified multiaxial formulation to describe yielding, plastic potential, and limit states of engineering materials
in Dislocations, Plasticity and Metal Forming : Proceedings of the 10th International Symposium on Plasticity and its Current Application (10th : July 7-11, 2003 : Québec, Canada). Maryland, NEAT Press, 2003, p. 570-572.

Aubertin M.,  Li L.,  Simon R.,  Bussière B. 
Un critère de plasticité et de rupture pour les géomatériaux à porosité variable
in Proceedings of the 56th Annual Canadian Geotechnical Conference and 4th Joint IAH-CNC and CGS Groundwater Specialty Conference (56th : September 28 - October 1, 2003 : Winnipeg, Manitoba), 2003.

Aubertin M.,  Li L.,  Arnoldi S.,  Belem T.,  Bussière B.,  Benzaazoua M.,  Simon R. 
Interaction between backfill and rock mass in narrow stopes
in Proceedings on the Panamerican Conference on Soil Mechanics and Geotechnical Engineering and 39th U.S. Rock Mechanics Symposium (12th : June 22-25, 2003 : MIT, Cambridge, Massachusetts), Boston, Mass., Verlag Gückauf GmbH (VGE), Essen, 2003, vol. 1, p. 1157-1164.

Aubertin M.,  Li L.,  Arnoldi S.,  Belem T.,  Bussière B.,  Benzaazoua M.,  Simon R. 
Modélisation numérique des interactions entre le remblai minier et le massif rocheux de chantiers étroits remblayés
in Colloque en Contrôle de Terrain de l'Association Minière du Québec (18e : 2003 : Val-d'Or, Québec), 2003.

Aubertin M.,  Li L.,  Simon R.,  Bussière B. 
Un critère général de plasticité et de rupture pour les matériaux à porosité variable/A general plasticity and failure criterion for materials with variable porosity
Montréal, École Polytechnique, 2003, Rapport Technique EPM-RT-2003-06.

Belem T.,  Benzaazoua M. 
Design and application of underground mine paste backfill technology
Geotechnical and Geological Engineering, vol. 26, no 2, 2008, p. 147-175.

Belem T.,  Benzaazoua M. 
Predictive models for prefeasibility cemented paste backfill mix design
in Colloque international après-mine, (6-8 février, 2008 : Nancy, France), 2008.

Belem T. 
Étude des phénomènes de tassement et de drainage des remblais cimentés en pâte
Abitibi-Témiscamingue, Université du Québec en Abitibi-Témiscamingue, 2005, 22 p.

Belem T.,  Souley M.,  Homand F. 
Generalized directional peak shear stress criterion for dilatant rock joints
in Proceedings of the 57th Annual Canadian Geotechnical Conference and 5th Joint IAH-CNC-CGS Conference (57th : October 24-27, 2004 : Quebec, Canada), 2004, (http://www.cgsdev.net/conference2004/articles/G11.375.pdf).

Belem T.,  Harvey A.,  Simon R.,  Aubertin M. 
Measurement and prediction of internal stresses in an underground opening during its filling with cemented fill
in 5th International Symposium on Ground Support in Mining & Underground Construction, (5th : September 28-30, 2004 : Perth, Australia), Villaescusa, E., Potvin, Y. (éds), London, Taylor & Francis, 2004, p. 619-630.

Belem T.,  Benzaazoua M. 
The use of paste backfill as underground rock support: from its preparation to its underground delivery
in 5th International Symposium on Ground Support in Mining & Underground Construction, (5th : September 28-30, 2004 : Perth, Australia), Villaescusa, E., Potvin, Y. (éds), London, Taylor & Francis, 2004, p. 637-650.

Belem T.,  Benzaazoua M. 
Utilisation du remblai en pâte comme support de terrain. Partie I : de sa fabrication à sa mise en place sous terre
in Après-mines 2003: Impacts et gestion des risques:besoins et acquis de la recherche (5-7 février, 2003 : Nancy, France,), 2003.

Deng D.,  Simon R.,  Aubertin M. 
A geometrical approach for the estimation of scale effects in rock joint behaviour
in Proceedings of the 57th Annual Canadian Geotechnical Conference and 5th Joint IAH-CNC-CGS Conference (57th : October 24-27, 2004 : Quebec, Canada), 2004, Session 8F, p. 33-40.

James M.,  Li L.,  Aubertin M. 
Evaluation of the earth pressures in backfilled stopes using limit equilibrium analysis
in Proceedings of the 57th Annual Canadian Geotechnical Conference and 5th Joint IAH-CNC-CGS Conference (57th : October 24-27, 2004 : Quebec, Canada), 2004, Session 6F, p. 33-40.

Li L.,  Aubertin M. 
Implementation and application of a new elastoplastic model based on a multiaxial criterion to assess the stress state near underground openings
International Journal of Geomechanics, vol. 10, no 1, 2010, p. 13-21.

Li L.,  Aubertin M. 
Influence of water pressure on the stress state in stopes with cohesionless backfill
Geotechnical and Geological Engineering, vol. 27, no 1, 2009, p. 1-11.

Li L.,  Aubertin M. 
An elastoplastic evaluation of the stress state around cylindrical openings based on a closed multiaxial yield surface
International Journal for Numerical and Analytical Methods in Geomechanics, vol. 33, no 2, 2009, p. 193-213.

Li L.,  Aubertin M. 
Horizontal pressure on barricades for backfilled stopes: Part I. Fully drained conditions
Canadian Geotechnical Journal, vol. 46, no 1, 2009, p. 37-46.

Li L.,  Aubertin M. 
Horizontal pressure on barricades for backfilled stopes: Part II. Submerged conditions
Canadian Geotechnical Journal, vol. 46, no 1, 2009, p. 47-56.

Li L.,  Aubertin M. 
An investigation of the stress state in inclined backfilled stopes using FLAC-2D
Montréal, École polytechnique de Montréal. Département des génies civil, géologique et des mines, 2008, EPM/RT 2008-01, 38 p. (http://www.polymtl.ca/biblio/epmrt/rapports/rt2008-01.pdf).

Li L.,  Aubertin M. 
An improved analytical solution to estimate the stress state in sub-vertical backfilled stopes
Canadian Geotechnical Journal, vol. 45, no 10, 2008, p. 1487-1496.

Li L.,  Aubertin M.,  Belem T. 
Development of a 3D analytical solution to evaluate stresses in backfilled vertical openings
Montréal, École Polytechnique de Montréal, 2005, 44 p., (http://www.polymtl.ca/biblio/epmrt/rapports/rt2005-04.pdf).

Li L.,  Aubertin M.,  Simon R.,  Bussière B. 
Formulation and application of a general inelastic locus for geomaterials with variable porosity
Canadian Geotechnical Journal, vol. 42, no 2, 2005, p. 601-623.

Li L.,  Aubertin M.,  Belem T. 
Formulation of a three dimensional analytical solution to evaluate stress in backfilled vertical narrow openings
Canadian Geotechnical Journal, vol. 42, no 6, 2005, p. 1705-1717.

Li L.,  Aubertin M.,  Belem T.,  Simon R.,  James M.,  Bussière B. 
A 3D analytical solution for evaluating earth pressures in vertical backfilled stopes
in Proceedings of the 57th Annual Canadian Geotechnical Conference and 5th Joint IAH-CNC-CGS Conference (57th : October 24-27, 2004 : Quebec, Canada), 2004, Session 6F, p. 41-48.

Li L.,  Aubertin M. 
A general relationship between porosity and uniaxial strength of engineering materials
Canadian Journal of Civil Engineering, vol. 30, no 4, 2003, p. 644–658.

Li L.,  Aubertin M.,  Simon R.,  Bussière B.,  Belem T. 
Modeling arching effects in narrow backfilled stopes with FLAC
in FLAC and Numerical Modeling in Geomechanics: Proceedings of 3rd International FLAC Symposium (3rd, October 22-24, 2003 : Sudbury, Canada), Rotterdam, A.A. Balkema, 2003, p. 211-219.

Ouellet S.,  Bussière B.,  Benzaazoua M.,  Aubertin M.,  Belem T. 
Effect of binder type and mixing water chemistry on the microstructural evolution of cemented paste backfill
in Proceedings of the 57th Annual Canadian Geotechnical Conference and 5th Joint IAH-CNC-CGS Conference (57th : October 24-27, 2004 : Quebec, Canada), 2004, Session 4G, p. 23-30.

Sih G. C.,  Vu-Khanh T. 
Materials for safety and health : mesoscopic and multiscale consideration in modern science and engineering”
Montréal, École de technologie supérieure, 2005.

Yilmaz E.,  Belem T.,  Bussière B.,  Benzaazoua M. 
Consolidation characteristics of early age cemented paste backfill
in Proceedings of the 61th Canadian Geotechnical Conference and 9th Joint CGS/IAH-CNC Conference (61th : September 21-24, 2008 : Edmonton, Canada), 2008, p. 797-804.

Yilmaz E.,  Belem T.,  Benzaazoua M.,  Bussière B. 
Experimental characterization of the influence of curing under stress on the hydromechanical and geochemical properties of cemented paste backfill
in Tailings and Mine Waste '08, (October 21-24, 2008 : Vail, Colorado), 2008, p. 139-152.

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