Optimization of open-pit mine design and production planning with an improved floating cone algorithm

Turan G., Onur A. H.

OPTIMIZATION AND ENGINEERING, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s11081-022-09725-4
  • Dergi Adı: OPTIMIZATION AND ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Compendex, Computer & Applied Sciences, INSPEC, zbMATH, Civil Engineering Abstracts
  • Anahtar Kelimeler: Open-pit optimization, Ultimate pit limit, Floating cone algorithm, Production planning, MODEL, FORMULATIONS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Open-pit mining plans include implementing operations throughout the entire life of the mine. In addition to geometric and geotechnical constraints, it is important to ensure an uninterrupted ore feed by optimizing production plan. In order to achieve this and at the same time maximize the net present value, the most well-known method is "Parametric Analysis Method". However, this method is insufficient for determining the excavation direction in the transitions between production zones due to geological and economic constraints. It should be ensured that the change in the amount of excavation is applicable in the transitions between the excavation zones. In this study, cone extraction sequencing has been improved to determine the ultimate pit limit. Afterwards, a long-term production plan has been constituted by using the parametric analysis method and the cone extraction sequence of the improved floating cone algorithm. In this way, it is planned to extract ore blocks with an equal annual production amount in each period. The method is applied to a gold mine as a case study. The long-term production plan of the mine for a total of 10 periods, one period of which is 1 year, has been put forward by planning to excavate 470 thousand tons of ore in each period.