Location theory applied to optimize the position of road exit(s) in open pit mining (case study)

  • Ali ParhizkarEmail author
Original Paper


Roads are one of the more important aspects of open pit mines’ planning and design. Practical pit must include haulage road which influences the pit slope, stripping ratio, and consequently the reserve quantity. The first question must be answered when sitting the road in the pit wall is “where is the road exit(s) on the pit wall?” In this paper, we have presented a mathematical model to optimize the road exit(s) and so the transportation cost. This model gives the most optimum and practical location of the road exit(s) on the pit perimeter which has the minimum transportation cost. The road position in open pit wall was considered as a function of the volume of material which must be transported from the pit (mine) to different destinations such as waste dump, stock pile, mill, and leach dump according to cut-off grade strategy. As a case study, the model was implemented in a copper mine in Iran, and the optimum position of the road in the pit wall was determined. In cases that the optimum point is not available or if more than one exit point would be needed, using of iso-cost lines was explained in the paper to find the practical solution.


Road exit Open pit Location theory Transportation cost 


  1. Asad M, Waqar A, Qureshi MA, Jang H (2016) A review of cut-off grade policy models for open pit mining operations. Resources Policy, Elsevier 49(C):142–152CrossRefGoogle Scholar
  2. Couzens TR (1979) Aspects of production planning: operating layout and phase plans. In: Crawford JT, Hustrulid WA (eds) Open pit mine planning and design. SME-AIME, New York, pp 219–231Google Scholar
  3. Crawford J, Hustrulid W (1979) Open pit mine planning and design. Society of mining engineering, New YorkGoogle Scholar
  4. Donnelly M & Smith B (2003) A new approach to locating objects in space. Conference on Spatial Information Theory (COSIT)Google Scholar
  5. Francis R, White J (1974) Facility layout and location: an analytical approach. Prentice-Hall, Upper Saddle RiverGoogle Scholar
  6. Hustrulid W & Kuchta M (2006) Open pit mine planning and design, Balkema publicationsGoogle Scholar
  7. Rendu MJ (2008) An introduction to cut-off grade estimation. USA society for mining, metallurgy and exploration, Inc.Google Scholar
  8. Weber A (1929) Theory of the location of industries. The University of Chicago Press, ChicagoGoogle Scholar

Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  1. 1.Department of Mining Engineering, Lahijan BranchIslamic Azad UniversityLahijanIran

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