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Project IRSST
 | Design of ore and discard chimneys (cheminées à minerai et à stérile)John Hadjigeorgiou,
Jean-François Lessard
/ Université Laval
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0099-0890 : Completed
Mine chimneys are steep, underground openings into which ore is poured and then hoisted to the surface from the base of the central shafts. These chimneys occasionally become blocked, mainly due to the deterioration of their walls. The miners must then unblock them so that hauling work can continue. Given the nature of the activities carried out, this activity presents serious risks to miner safety. As a result, between 1987 and 1999, a survey was done of 60 accidents, nine of which were fatal, caused by work on these structures. Better chimney design would reduce the frequency of blockages and the deterioration of walls, which could help prevent accidents. The purpose of the research project is to develop a chimney design aimed at avoiding blockages and preventing or reducing wall deterioration, as well as to propose safer work methods. It will also provide the basis for a guide for mining engineers.
IRSST publicationsHadjigeorgiou, John; Lessard, Jean-FrançoisGuide de déblocage des cheminées à minerai et à stérile (Version révisée)
(Ore and waste chute clearing guide (Revised Version))
Études et recherches / Guide technique
RG2-380, Montréal, IRSST, 2005, 22 pages. Free download
More Info
Hadjigeorgiou, John; Lessard, Jean-FrançoisListe des méthodes de travail reliées aux opérations de déblocage et de réhabilitation des cheminées a minerai et à stérile (version révisée)
(List of work methods related to ore and waste chute clearing and rehabilitation operations (Revised version))
Études et recherches / Annexe
RA-380, Montréal, IRSST, 2005, 25 pages. Free download
More Info
Hadjigeorgiou, John; Lessard, Jean-FrançoisConception des cheminées à minerai et à stérile
(Design of ore and waste chutes)
Études et recherches / Rapport
R-380, Montréal, IRSST, 2004, 35 pages. Free download
More Info
Lessard, Jean-François; Hadjigeorgiou, JohnGuide de conception des cheminées à minerai et à stérile
(Ore and waste chute design guide)
Études et recherches / Guide technique
RG1-380, Montréal, IRSST, 2004, 32 pages. Free download
More Info
Scientific publications and communicationsHadjigeorgiou J.,
Lessard J. F.
Numerical investigations of ore pass hang-up phenomena
International Journal of Rock Mechanics and Mining Sciences, vol. 44, no 6, 2007, p. 820-834.
Hadjigeorgiou J.,
Lessard J. F.,
Mercier-Langevin F.
Ore pass practice in canadian mines
South African Institute of Mining and Metallurgy Journal, vol. 105, no 11, 2005, p. 809-817.
Hadjigeorgiou J.,
Turcotte P.,
Lessard J.-F.
Influence of excavation inclination and particle shape on ore pass hang-ups
in Canadian Institute of Mining, Metallurgy and Petroleum Annual General Meeting (105th : 4-7 May, 2003 : Montréal, Canada), 2003.
Hadjigeorgiou J.,
Lessard J.-F.
The case for liners in ore pass systems
in International Seminar on Surface Support Liners 2003: Thin Spray-On Liners, Shotcrete and Mesh, (25-26 August, 2003 : Québec, Canada), 2003, Section 4, p. 14.
Lessard J. F.,
Hadjigeorgiou J.
Ore pass database: Quebec underground metal mines
CIM Magazine, vol. 1, no 1, March-April 2006.
Lessard J.-F.,
Hadjigeorgiou J.
Design tools to prevent ore pass hang-ups
in Congress of the International Society for Rock Mechanics (10th : September 8-10, 2003 : Sandton, South Africa), 2003, vol. 2, p. 757-762.
Lessard J.-F.,
Hadjigeorgiou J.,
Turcotte P.
Rock pass operational problems in Quebec underground mines
Canadian Institute of Mining, Metallurgy and Petroleum Annual General Meeting (104th : 28 April-1 May, 2002 : Vancouver, Canada), 2002.
Prévention au travail articles
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