Geostatistical simulation for open PIT design optimization and mine economic analysis in decision-making

Abu Bakarr Jalloh, Kyuro Sasaki

研究成果: 会議への寄与タイプ論文

抄録

In this study, an Iron Ore deposit which lies within the Marampa schist formation located in Sierra Leone, that hosts a primary quartz-hematite schist horizon with thickness of up to 65m, was used for eventual block estimation, grade uncertainty characterization and final pit outline design. Additionally, economic sensitivity analysis was done to determine how sensitive the investment will be to certain economic variable changes such as metal price, refining cost, operating cost and other economic parameters that are not known with certainty. The new concept for final pit shape in open pit mine design namely Best Positive Inverted Truncated Cone (BPITC) algorithm is applied in optimizing the pit shape. The optimization results obtained showed that BPITC can always produce optimal solutions for final pit designs and it gives effective information on mineral project decision-making and mining sequencing. The kriging and simulation algorithms revenue evaluation showed nearly the same optimal values at the same cut-off grade. Finally, all the information which can be obtained once drilling has started and in making decisions whether or not to develop the mineral deposit through geo-statistical analysis using GSLIB was shown.

元の言語英語
出版物ステータス出版済み - 1 1 2013
イベント19th Formation Evaluation Symposium of Japan 2013 - Chiba, 日本
継続期間: 9 26 20139 27 2013

その他

その他19th Formation Evaluation Symposium of Japan 2013
日本
Chiba
期間9/26/139/27/13

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Economic analysis
economic analysis
Decision making
decision making
schist
Economics
Cones
Metal refining
economics
simulation
Ore deposits
Quartz
open pit mine
Mineral resources
Hematite
Iron ores
mineral deposit
iron ore
kriging
Operating costs

All Science Journal Classification (ASJC) codes

  • Economic Geology
  • Geochemistry and Petrology
  • Geology
  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology

これを引用

Jalloh, A. B., & Sasaki, K. (2013). Geostatistical simulation for open PIT design optimization and mine economic analysis in decision-making. 論文発表場所 19th Formation Evaluation Symposium of Japan 2013, Chiba, 日本.

Geostatistical simulation for open PIT design optimization and mine economic analysis in decision-making. / Jalloh, Abu Bakarr; Sasaki, Kyuro.

2013. 論文発表場所 19th Formation Evaluation Symposium of Japan 2013, Chiba, 日本.

研究成果: 会議への寄与タイプ論文

Jalloh, AB & Sasaki, K 2013, 'Geostatistical simulation for open PIT design optimization and mine economic analysis in decision-making' 論文発表場所 19th Formation Evaluation Symposium of Japan 2013, Chiba, 日本, 9/26/13 - 9/27/13, .
Jalloh AB, Sasaki K. Geostatistical simulation for open PIT design optimization and mine economic analysis in decision-making. 2013. 論文発表場所 19th Formation Evaluation Symposium of Japan 2013, Chiba, 日本.
Jalloh, Abu Bakarr ; Sasaki, Kyuro. / Geostatistical simulation for open PIT design optimization and mine economic analysis in decision-making. 論文発表場所 19th Formation Evaluation Symposium of Japan 2013, Chiba, 日本.
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