Geomechanical property uncertainty effect on stability of open-pit mine slope (comparison between two important copper mines in Middle East and Europe)

Ali Moradi Afrapoli, Morteza Osanloo

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

The optimum design of a pit requires the determination of the most economic pit limit which normally results in steep slope angles as in this way the excavation of waste is minimized. In general, as the slope angle becomes steeper, the stripping ratio is reduced and the mine economics improves. However, these benefits are counteracted by an increased risk to the operation. Thus the determination of the acceptable slope angle is a key aspect of the mining operation. The difficulty in determining the acceptable slope angle stems from the existence of uncertainties associated with the stability of the slopes. The uncertainty might be due to a random variability or lack of aspect knowledge. Field data collection and site investigations are used to reduce these uncertainties and to define the inherent natural variability. Effects of geomechanical property uncertainty on probability of slope failure are significant. In this paper Monte Carlo Simulation (MSC) method was selected to use for incorporating geomechanical property uncertainty in examining the probability of failure of the slope in Sungun Copper Mine (SCM) in Iran and Aitik Copper Mine (ACM) in Sweden.

Original languageEnglish
Pages1336-1343
Number of pages8
StatePublished - 2012
Event7th Asian Rock Mechanics Symposium, ARMS 2012 - Seoul, Korea, Republic of
Duration: Oct 15 2012Oct 19 2012

Conference

Conference7th Asian Rock Mechanics Symposium, ARMS 2012
Country/TerritoryKorea, Republic of
CitySeoul
Period10/15/1210/19/12

Bibliographical note

Publisher Copyright:
© 2012 International Society for Rock Mechanics. All rights reserved.

Keywords

  • Geomechanical properties
  • Open-pit mine
  • Slope stability
  • Uncertainty

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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