Development of an integrated method for analyzing the stability of backfilled stope

Abstract

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.

Produced Under this Project

Scientific Reports

Development of an integrated method for analyzing the stability of backfilled stope Research Report: R-622

Scientific Publications

A general relationship between porosity and uniaxial strength of engineering materials
Li L., Aubertin M.
Source :
Canadian Journal of Civil Engineering, vol. 30, no 4, 2003, p. 644–658
A unified multiaxial formulation to describe yielding, plastic potential, and limit states of engineering materials
Aubertin M., Li L.
Source :
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
Modeling arching effects in narrow backfilled stopes with FLAC
Li L., Aubertin M., Simon R., Bussière B., Belem T.
Source :
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
Un critère de plasticité et de rupture pour les géomatériaux à porosité variable
Aubertin M., Li L., Simon R., Bussière B.
Source :
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
Interaction between backfill and rock mass in narrow stopes
Aubertin M., Li L., Arnoldi S., Belem T., Bussière B., Benzaazoua M., Simon R.
Source :
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
Modélisation numérique des interactions entre le remblai minier et le massif rocheux de chantiers étroits remblayés
Aubertin M., Li L., Arnoldi S., Belem T., Bussière B., Benzaazoua M., Simon R.
Source :
in Colloque en Contrôle de Terrain de l'Association Minière du Québec (18e : 2003 : Val-d'Or, Québec), 2003
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
Aubertin M., Li L., Simon R., Bussière B.
Source :
Montréal, École Polytechnique, 2003, Rapport Technique EPM-RT-2003-06
Utilisation du remblai en pâte comme support de terrain. Partie I : de sa fabrication à sa mise en place sous terre
Belem T., Benzaazoua M.
Source :
in Après-mines 2003: Impacts et gestion des risques:besoins et acquis de la recherche (5-7 février, 2003 : Nancy, France,), 2003
A porosity-dependent inelastic criterion for engineering materials
Aubertin M., Li L.
Source :
International Journal of Plasticity, vol. 20, no 12, 2004, p. 2179-2208
Measurement and prediction of internal stresses in an underground opening during its filling with cemented fill
Belem T., Harvey A., Simon R., Aubertin M.
Source :
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
A geometrical approach for the estimation of scale effects in rock joint behaviour
Deng D., Simon R., Aubertin M.
Source :
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
Evaluation of the earth pressures in backfilled stopes using limit equilibrium analysis
James M., Li L., Aubertin M.
Source :
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
A 3D analytical solution for evaluating earth pressures in vertical backfilled stopes
Li L., Aubertin M., Belem T., Simon R., James M., Bussière B.
Source :
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
The use of paste backfill as underground rock support: from its preparation to its underground delivery
Belem T., Benzaazoua M.
Source :
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
Effect of binder type and mixing water chemistry on the microstructural evolution of cemented paste backfill
Ouellet S., Bussière B., Benzaazoua M., Aubertin M., Belem T.
Source :
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
Formulation and application of a general inelastic locus for geomaterials with variable porosity
Li L., Aubertin M., Simon R., Bussière B.
Source :
Canadian Geotechnical Journal, vol. 42, no 2, 2005, p. 601-623
Formulation of a three dimensional analytical solution to evaluate stress in backfilled vertical narrow openings
Li L., Aubertin M., Belem T.
Source :
Canadian Geotechnical Journal, vol. 42, no 6, 2005, p. 1705-1717
Generalized directional peak shear stress criterion for dilatant rock joints
Belem T., Souley M., Homand F.
Source :
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)
Méthodes d'estimation des pressions induites dans les chantiers remblayés
Aubertin M., Li L., Belem T., Simon R., Harvey A., James M., Benzaazoua M., Bussière B.
Source :
in Symposium 2005 sur l'environnement et les mines, (2e : 15-18 mai, 2005 : Rouyn-Noranda, Canada), 2005
Invited communication: A general inelastic criterion for geomaterials with variable porosity: Formulation and sample applications
Aubertin M., Li L., Simon R., Boulianne M.
Source :
in The 2005 Joint ASME/ASCE/SES Conference on Mechanics and Materials, (June 1-3, 2005 : Baton Rouge, U.S.A.), 2005
Materials for safety and health : mesoscopic and multiscale consideration in modern science and engineering”
Sih G. C., Vu-Khanh T.
Source :
Montréal, École de technologie supérieure, 2005
Development of a 3D analytical solution to evaluate stresses in backfilled vertical openings
Li L., Aubertin M., Belem T.
Source :
Montréal, École Polytechnique de Montréal, 2005, 44 p., (http://www.polymtl.ca/biblio/epmrt/rapports/rt2005-04.pdf)
Étude des phénomènes de tassement et de drainage des remblais cimentés en pâte
Belem T.
Source :
Abitibi-Témiscamingue, Université du Québec en Abitibi-Témiscamingue, 2005, 22 p
Design and application of underground mine paste backfill technology
Belem T., Benzaazoua M.
Source :
Geotechnical and Geological Engineering, vol. 26, no 2, 2008, p. 147-175
Influence of water pressure on the stress state in stopes with cohesionless backfill
Li L., Aubertin M.
Source :
Geotechnical and Geological Engineering, vol. 27, no 1, 2009, p. 1-11
Implementation and application of a new elastoplastic model based on a multiaxial criterion to assess the stress state near underground openings
Li L., Aubertin M.
Source :
International Journal of Geomechanics, vol. 10, no 1, 2010, p. 13-21
An elastoplastic evaluation of the stress state around cylindrical openings based on a closed multiaxial yield surface
Li L., Aubertin M.
Source :
International Journal for Numerical and Analytical Methods in Geomechanics, vol. 33, no 2, 2009, p. 193-213
An improved analytical solution to estimate the stress state in sub-vertical backfilled stopes
Li L., Aubertin M.
Source :
Canadian Geotechnical Journal, vol. 45, no 10, 2008, p. 1487-1496
Predictive models for prefeasibility cemented paste backfill mix design
Belem T., Benzaazoua M.
Source :
in Colloque international après-mine, (6-8 février, 2008 : Nancy, France), 2008
Consolidation characteristics of early age cemented paste backfill
Yilmaz E., Belem T., Bussière B., Benzaazoua M.
Source :
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
Experimental characterization of the influence of curing under stress on the hydromechanical and geochemical properties of cemented paste backfill
Yilmaz E., Belem T., Benzaazoua M., Bussière B.
Source :
in Tailings and Mine Waste '08, (October 21-24, 2008 : Vail, Colorado), 2008, p. 139-152
Horizontal pressure on barricades for backfilled stopes: Part I. Fully drained conditions
Li L., Aubertin M.
Source :
Canadian Geotechnical Journal, vol. 46, no 1, 2009, p. 37-46
Horizontal pressure on barricades for backfilled stopes: Part II. Submerged conditions
Li L., Aubertin M.
Source :
Canadian Geotechnical Journal, vol. 46, no 1, 2009, p. 47-56
An investigation of the stress state in inclined backfilled stopes using FLAC-2D
Li L., Aubertin M.
Source :
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)
A numerical analysis of the application of wick drains for continuous backfilling in mine backfilled stopes
Li L.
Source :
in Geosynthetics Mining Solutions 2014, (September 8-11, 2014 : Vancouver, Canada), Proceedings of Geosynthetics Mining Solutions, Caldwell, J., Goodwill, J. (eds), InfoMine, 2014, p. 369-382

Additional Information

Type: Project

Number: 0099-2930

Status: Completed

Year of completion: 2009

Research Field: Mechanical and Physical Risk Prevention

Team:

Tikou Belem (Université du Québec en Abitibi-Témiscamingue)
Michel Aubertin (Polytechnique Montréal)
Li Li (Polytechnique Montréal)
Richard Simon (Polytechnique Montréal)
Bruno Bussière (Université du Québec en Abitibi-Témiscamingue)
Mostafa Benzaazoua (Université du Québec en Abitibi-Témiscamingue)

IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

project