Accounting for operational dilution by incorporating geological uncertainties in short-term mine planning

Câmara, Taís Renata; Leal, Ronald Scheffer; Peroni, Rodrigo de Lemos

doi:10.15446/dyna.v87n213.83661

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…e coal mining disturbances such as groundwater level drop, coal gangue accumulation, and surface subsidence will cause a series of ecological, environmental, and social problems such as landscape pattern change, intensification of human-land conflict, and loss of species diversity [12]. In recent years, the research on mining ecosystem environment using traditional passive optical remote sensing has been widely concerned by domestic and foreign scholars, such as the research on land-use/land-cover change based on remote sensing and the research on ecosystem evolution based on normalized difference vegetation index, landscape pattern index, and other ecological indicators [13].…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Mine Geological Environment Monitoring and Risk Assessment in Arid and Semiarid Areas

et al. 2021

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Along with the accelerated shift of coal mining to the ecologically fragile west, the contradiction between coal resource development and ecological protection in the western arid and semiarid coal mining areas is rapidly intensifying. Based on the above background, this thesis takes the coal mining area in the arid and semiarid regions as an example; applies the theories of ecology, coal mining subsidence, geodesy, and ecological restoration; uses remote sensing in synthetic aperture radar (SAR), geographic information system (GIS), and mathematical modelling to reveal the ecological evolution law of the mining area; measures the ecological damage of the mining area; and then proposes a reasonable ecological restoration strategy. The surface deformation monitoring study in the study area shows that on the whole, some areas in the study area have different degrees of surface subsidence disasters, and the maximum surface subsidence value exceeds 800 mm. From the distribution of surface subsidence in the study area, surface subsidence disasters mainly occur in the eastern and central mountainous areas rich in coal resources, as well as in the mining areas west of the Yellow River, and the subsidence basins are distributed in a series of irregular concentric ovals. In terms of the scale of surface subsidence in the study area, a total of 230.03 km2 of land in the study area showed surface subsidence hazards during the monitoring period, accounting for 13.78% of the total area of the study area, of which the area of severe subsidence was 44.98 km2 (2.69%). The area of more serious subsidence area is 101.33 km2 (6.07%), and the area affected by subsidence is 83.72 km2 (5.01%).

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Section: Introductionmentioning

confidence: 99%

[Retracted] Mine Geological Environment Monitoring and Risk Assessment in Arid and Semiarid Areas

et al. 2021

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“…We can note that some organizations have problems with mine-to-mill concept's reconciliation over longer period of time. Those problems can follow poor reconciliation between the mill and grade control prediction [40]. Sometimes, there is some incorrectness in the application of resource modeling methods it can lead to poor analysis of a mill capacity at the first stage of operations [41].…”

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confidence: 99%

“…Strengths/benefits and weaknesses/problems of mine-to-mill concept implementation. Sources:[4,5,[35][36][37][38][39][40][41].…”

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confidence: 99%

Assessing of Losses and Dilution Impact on the Cost Chain: Case Study of Gold Ore Deposits

2021

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The conditions of declining gold grade in the ore, increasing depth of excavation, and de-creasing unallocated stock of deposits make it necessary to develop efficient solutions for the mine-to-mill process, which have to be adapted to each specific mining plant and will optimizes production costs. Current research focuses on a case study that demonstrates how indicators of mining losses and dilution influence the variation of costs chain in the production cycle. The article examines the topical issue of determining the effects at the mine-to-mill stages due to changes in losses and dilution. The author’s approach to the formation of a mine-to-mill cost chain is proposed by integrating several cost estimation methods into the general cost estimation methodology. The estimation methodology is a compilation of factor analysis and cost engineering methods that take into account the change in costs due to the variation of losses and dilution. It was proven that with variations in losses and dilution, cost savings arise due to changes in the volume of work on ore averaging, ore transportation, and beneficiation. For the case of the Kuranakh ore field, there are no effects at the mining stage. The use of internal reserves by means of managing ore quality parameters allows reducing the costs per ton of processed rock mass along the entire production chain.

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Comparing the accuracy of two approaches to account for internal dilution: A case study from a porphyry copper deposit

Alfaro

Maleki

Madani

et al. 2023

International Journal of Mining, Reclamation and Environment

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Accounting for operational dilution by incorporating geological uncertainties in short-term mine planning

Cited by 5 publications

References 14 publications

[Retracted] Mine Geological Environment Monitoring and Risk Assessment in Arid and Semiarid Areas

[Retracted] Mine Geological Environment Monitoring and Risk Assessment in Arid and Semiarid Areas

Assessing of Losses and Dilution Impact on the Cost Chain: Case Study of Gold Ore Deposits

Comparing the accuracy of two approaches to account for internal dilution: A case study from a porphyry copper deposit

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