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Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717
Print version ISSN 0038-223X

J. S. Afr. Inst. Min. Metall. vol.110 n.8 Johannesburg Aug. 2010

 

TRANSACTION PAPER

 

A review of optimal planning of level and raise spacing in inclined narrow reefs

 

 

C. Musingwini

School of Mining Engineering, University of Witwatersrand, Johannesburg, South Africa

 

 


SYNOPSIS

The subject of optimal planning of level and raise spacing for inclined narrow reef deposits has received intermittent attention over the years because the subject matter is inherently complex. Previous work has approached the problem as simply that of simultaneously minimizing the total excavation and haulage cost associated with the development workings. However, when level and raise spacing are altered, other factors such as productivity are negatively affected, thus requiring a delicate trade-off of contradicting planning or optimization criteria. The paper concludes that the problem is actually of the multi-criteria decision analysis (MCDA) type, contrary to traditional thinking that the planning problem is achieved solely by minimizing waste development.

Keywords: Strategic mine planning, level spacing, raise spacing, inclined narrow reefs, optimization, half-level optimization model, multi-criteria decision analysis (MCDA)


 

 

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References

ALFORD, C. Optimisation in underground mine design, Proceedings APCOM XXV, Brisbane, Australia, 9th-14th July 1995, pp213-218.         [ Links ]

ANGLO PLATINUM MINE TECHNICAL SERVICES, MTS, Group Guideline Mine Technical Services: Conventional Breast Layout Design Guideline, Version 1.0, October 2005, Company Internal Document. 2005.         [ Links ]

BALLINGTON, I., SMITH, G.L., LANE, G.R., and HUDSON, J. The systemic interdependency of closure decisions at shaft level, Proceedings of the First International Seminar on Strategic versus Tactical Approaches in Mining, Sandton, 19-21 September 2005, pp. 153-164.         [ Links ]

BRASSELL, T.J. Stoping improvements, Papers and Discussions 1962-1963, vol. 1, Association of Mine Managers of South Africa, Transvaal and Orange Free State Chamber of Mines, Johannesburg, 1964. pp. 460-495.         [ Links ]

BRAZIL, M., LEE, D., LEUVEN, VAN M., RUBINSTEIN, J.H., THOMAS, D.A., and WORMALD, N.C. Optimising declines in underground mines, Transactions of the Institution of Mining and Metallurgy: Mining Technology, vol. 112, 2003. pp. A164-A170.         [ Links ]

BRAZIL, M., LEE, D., RUBINSTEIN, J.H., THOMAS, D.A., WENG, J.F., and WORMALD, N.C. Optimisation in the design of underground mine access, Proceedings of the International Symposium on Orebody Modelling and Strategic Mine Planning: Uncertainty and Risk Management, Perth, Australia, 22-24 November 2004, pp. 3-6.         [ Links ]

BRAZIL, M., THOMAS, D.A., WENG, J.F., RUBINSTEIN, J.H., and LEE, D.H. Cost optimisation for underground mining networks, Optimization and Engineering, vol. 6, 2005. pp. 241-256.         [ Links ]

BULLOCK, R.L. Chapter 2: General planning of the non-coal underground mine, Underground Mining Methods: Engineering Fundamentals and International Case Studies, Hustrulid, A. and Bullock, R.L. (eds.), Society for Mining, Metallurgy, and Exploration (SME), Colorado, USA, 2001. pp. 15-28.         [ Links ]

CARTER, P.G, LEE, D.H., and BAARSMA, H. Optimisation methods for the selection of an underground mining method, Proceedings of the International Symposium on Orebody Modelling and Strategic Mine Planning: Uncertainty and Risk Management, Perth, Australia, 22-24 November 2004, pp. 7-12.         [ Links ]

DIERING, D. Ultra-deep level mining-future requirements, Proceedings Colloquium on Technology for Rapidly Accessing the Ore Body, 30 July 1997, The South African Institute of Mining and Metallurgy: Randburg. 1977.         [ Links ]

EATON, L. Practical Mine Development and Equipment, 1st Edition, McGraw-Hill Book Compnay, Inc., New York, 1934. 405 p.         [ Links ]

EGERTON, F.M.G. Presidential address: The mechanisation of UG2 mining in the Bushveld Complex, The Journal of The South African Institute of Mining and Metallurgy, vol. 104, no. 8, September 2004, pp. 439-455.         [ Links ]

HAJDASIŃSKI, N.M. Time value of money and optimal location of mining facilities, Proceedings APCOM XXV Conference, Brisbane, 9-14 July 1995, pp. 231-239.         [ Links ]

JAGER, A.J. and RYDER, J.A. (eds.) A Handbook on Rock Engineering Practice for Tabular Hard Rock Mines, The Safety in Mines Research Advisory Committee (SIMRAC), Johannesburg, South Africa. 1999.         [ Links ]

JIYANA, T. Change management processes and ergonomics necessary for the implementation of in-stope roof bolting and safety nets at Turffontein shaft, a final year project report, School of Mining Engineering, University of Witwatersrand, June 2009.         [ Links ]

Kirk, R.L. Use of the exploration shaft to reduce development time at Palabora, Proceedings Colloquium on Technology for Rapidly Accessing the Ore Body, 30 July 1997, The South African Institute of Mining and Metallurgy, Randburg. 1997.         [ Links ]

LAWRENCE, D.R. The optimisation of raise-connection spacing in gold mines, Journal of the South African Institute of Mining and Metallurgy, vol. 84, no. 1, January 1984, pp. 10-20.         [ Links ]

LEWIS, R.S. Elements of Mining, 3rd Edition revised by Clark, G.B. (1964), John Wiley and Sons, New York. 1941.         [ Links ]

LIZOTTE, Y. and ELBROND, J. Optimal layout of underground mining levels, CIM Bulletin, vol. 78, no. 873, January 1985, pp. 41-48.         [ Links ]

MACFARLANE, A. Development methodology for deep level rapid reef access, Proceedings Colloquium on Technology for Rapidly Accessing the Ore Body, 30 July 1997. The South African Institute of Mining and Metallurgy: Randburg. 1997.         [ Links ]

MUSINGWINI, C. Techno-economic optimisation of level and raise spacing range in planning a Bushveld Complex platinum reef conventional breast mining layout. PhD Thesis submitted for examination to the University of Witwatersrand, Johannesburg, South Africa. 2009.         [ Links ]

MUSINGWINI, C., MINNITT, R.C.A., and WOODHALL, M. Technical operating flexibility in the analysis of mine layouts and schedules, Journal of the Southern African Institute of Mining and Metallurgy, vol. 107, no. 2 2007. pp. 129-136. A copy of the paper is available on INTERNET http://www.saimm.co.za/Publications/downloads/v107n02p129.pdf.         [ Links ]

NILSSON, D. Chapter 40: Planning economics of sublevel caving, Techniques Underground Mining: Selections from Underground Mining Methods Handbook, Gertsch, R.E. and Bullock, R.L. (eds.), Society for Mining Metallurgy, and Exploration (SME), Colorado, 1998. pp. 725-740.         [ Links ]

RYDER, J.A. and JAGER, A.J. (eds.) A Textbook on Rock Mechanics for Tabular Hard Rock Mines, The Safety in Mines Research Advisory Committee (SIMRAC), Johannesburg, South Africa. 2002.         [ Links ]

SMITH, M.L. and O'ROURKE, A. The connection between production schedule and cut-off optimization in underground mines, Proceedings Application of Computers and Operations Research in the Mineral Industry (APCOM 2005), Tucson, USA, 30 March-1 April, 2005, pp. 643-654.         [ Links ]

VIEIRA, F.M.C.C., DIERING, D.H., and DURRHEIM, R.J. Methods to mine the ultradeep tabular gold-bearing reefs of the Witwatersrand Basin, South Africa, Underground Mining Methods: Engineering Fundamentals and International Case Studies, Hustrulid W.A. and Bullock R.L. (eds.), Society for Mining Metallurgy and Exploration (SME), 2001. pp. 691-704.         [ Links ]

WOODHALL, M. Managing the mining life cycle: mineral resource management in deep level gold mining, MSc dissertation, University of the Witwatersrand, Johannesburg. 2002.         [ Links ]

YORK, G. The role and design of pillar systems in tabular mines, Proceedings of School on Narrow Tabular Orebody Mining, Randburg, 21-22 October 1999.         [ Links ]

ZAMBÓ, J. Optimum Location of Mining Facilities, Akadémiai Kiadó, Budapest, 1968. 145 pp.         [ Links ]

 

 

Paper received Dec. 2009
Revised paper received Feb. 2010

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