A mixed integer linear programming framework for optimising the extraction strategy of open pit – underground mining options and transitions

Afum, Bright Oppong; Ben-Awuah, Eugene; Askari–Nasab, Hooman

doi:10.1080/17480930.2019.1701968

Cited by 15 publications

(21 citation statements)

References 18 publications

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“…Within the framework of the chosen strategy, a mineral deposit can be developed by alternative methods sequentially or in parallel, and in various combinations [17]. The choice of mining method depends primarily on the capabilities of the ME and the external economic situation [18].…”

Section: Open-pit Mining and Technical System's Sustainable Developme...mentioning

confidence: 99%

Selection of Open-Pit Mining and Technical System’s Sustainable Development Strategies Based on MCDM

2022

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Mining of the extensive, steeply dipping ore deposit takes several decades. An open-pit mining method is more often used in the early years of such a mining enterprise (ME). The management of the enterprise is faced with the problem of changing the mining method as the depth of the quarry increases. Untimely solution of this issue or the choice of the wrong strategy for the development of ME leads to a decrease in profitability, and the emergence of environmental and social difficulties. We studied the functioning of one hundred and seven MEs from different countries and substantiated four main sustainable development strategies for ME and its main system—the open-pit mining and technical system (MTS): adjustment of the current stage of mining indicators, transition to a new stage of mining, transition to a combined open–underground mining, and mine closure. The result of our research is an original methodology for selecting a strategy for MTS sustainable development. Our methodology is based on a new system of parameters and indicators for evaluating the sustainability of the opening-up of an opencast system (OOS). This assessment system includes twenty-three indicators that characterize the technical, technological, economic, social, and environmental factors of sustainable development. We propose to select a strategy for MTS sustainable development using combined fuzzy AHP-MARCOS multicriteria decision method (MCDM). The result of our case study for the Malyi Kuibas ore deposit was the choice of a mine closure strategy. The reliability of the obtained result is confirmed by a multilateral sensitivity assessment using nine other known MCDMs, while changing the criteria weights and composition of strategies. The results of the study prove the need for a timely decision to change the MTS development strategy as the depth of production increases. In addition, we have shown the effectiveness of the selection methodology based on the multicriteria assessment of the OOS sustainability.

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Section: Open-pit Mining and Technical System's Sustainable Developme...mentioning

confidence: 99%

Selection of Open-Pit Mining and Technical System’s Sustainable Development Strategies Based on MCDM

2022

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“…Their models were good improvements over previous works but were missing some constraints such as the ventilation requirement and rock strength properties required for practical implementation. The transition from open pit to underground mining is a complicated geomechanical process which requires the consideration of rock mass properties [35,36].…”

Section: Crown Pillar and Rock Strength Considerations In Mining Options And Transitions Planningmentioning

confidence: 99%

“…When the crown pillar thickness is large, considerable quantity of mineral deposit is lost but when the pillar is undersized and thin, the probability of pillar failure and instability of the mine is eminent [65]. According to Ma, Zhao, Zhang, Guo, Wei, Wu, and Zhang [35], ground movement and deformation study of OP mines such as geometrical, geomechanical, and analytical analyses are important in the transition study.…”

Section: Crown Pillar and Rock Strength Considerations In Mining Options And Transitions Planningmentioning

confidence: 99%

“…This may lead to suboptimal solutions and will require evaluating multiple crown pillar locations in a scenario-based approach. A few authors have attempted to incorporate the positioning of the crown pillar in the optimization process [14,24,30,31,34,35]. Their models were good improvements over previous works but were missing some constraints such as the ventilation requirement and rock strength properties required for practical implementation.…”

Section: Introductionmentioning

confidence: 99%

“…However, in simultaneous mode, horizontal and vertical slices underhand cut and fill with cemented backfill is more feasible to be used with OP mining. Afum, Ben-Awuah, and Askari-Nasab [35] implemented a mathematical programming model that allows the optimization approach to decide whether the mineral deposit should be exploited with either simultaneous, non-simultaneous, sequential, or any of these combinations thereof.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Models and Algorithms for Surface-Underground Mining Options and Transitions Optimization: Some Lessons Learnt and the Way Forward

Afum

Ben-Awuah

2021

Mining

Self Cite

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It is important that the strategic mine plan makes optimum use of available resources and provides continuous quality ore to drive sustainable mining and profitability. This requires the development of a well-integrated strategy of mining options for surface and/or underground mining and their interactions. Understanding the current tools and methodologies used in the mining industry for surface and underground mining options and transitions planning are essential to dealing with complex and deep-seated deposits that are amenable to both open pit and underground mining. In this study, extensive literature review and a gap analysis matrix are used to identify the limitations and opportunities for further research in surface-underground mining options and transitions optimization for comprehensive resource development planning.

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Optimizing transition: investigating the influence of operational parameters on production scheduling optimization for mines transitioning from open pit to block caving methods

Flores,

Anani,

et al. 2024

Optim Eng

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A mixed integer linear programming framework for optimising the extraction strategy of open pit – underground mining options and transitions

Cited by 15 publications

References 18 publications

Selection of Open-Pit Mining and Technical System’s Sustainable Development Strategies Based on MCDM

Selection of Open-Pit Mining and Technical System’s Sustainable Development Strategies Based on MCDM

A Review of Models and Algorithms for Surface-Underground Mining Options and Transitions Optimization: Some Lessons Learnt and the Way Forward

Optimizing transition: investigating the influence of operational parameters on production scheduling optimization for mines transitioning from open pit to block caving methods

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