Open Pit Mine Planning and Design, Two Volume Set &amp; CD-ROM Pack

Hustrulid, W.A.; Kuchta, Mark; Martin, Rachel E.

doi:10.1201/b15068

Cited by 91 publications

(85 citation statements)

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“…The increase of road width (scenario A) and the decrease of longitudinal grade by 2% (scenario B) contributed to a slight increase of ore in both cases. However, there is a higher increase in the waste mass, which negatively affected the SR. Hustrulid et al (2013) stated that wider roads tend to decrease the overall slope angle, which was evident and quantified in the results of scenario A. In scenario B, the reduction of this angle can be explained by the increase in the number of road passes in a cross section, which increases the length of the haul roads to the same depth.…”

Section: Figurementioning

confidence: 83%

“…According to Hustrulid et al (2013), the strip ratio (SR) is defined as the mass of waste that needs to be removed to release a unit mass of ore. The variation of SR values is due to the alteration of certain design parameters of the pit, among them the overall slope angle, which can release or block the ore located to the final pit, as well as increase or reduce the waste mass (Wyllie and Mah, 2014).…”

Section: Mining Mineraçãomentioning

confidence: 99%

“…Among the various geometric parameters that are affected by these changes are width, longitudinal grade and the need to add switchbacks. As the variation of these elements affect the overall slope angle -and consequently the SR, it becomes important that these changes are planned and analyzed with special attention to evaluate the impacts in the project (Hustrulid et al, 2013). Therefore, the dependence relationship between the SR, the overall slope angle and the haul road geometry is evident.…”

Section: Figurementioning

confidence: 99%

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The impact of haulroad geometric parameters on open pit mine strip ratio

2019

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The aim of the study was to analyze the impact on the strip ratio (SR) through varying haul road geometric parameters in two types of deposits, namely one with a steeper dip and a second one with a more equidimensional horizontal behavior. The SRs and the overall slope angle were compared with a base scenario, where the results show an increase in the SR when: (a) the width of the haul roads was increased; (b) the longitudinal grade of the road was decreased; and (c) switchbacks were added. The increase in the longitudinal grade of 2% was considered the best-case scenario, resulting in 1.08% decrease in the SR for the horizontal deposit and in a 4.15% decrease for the vertical one. It was also noticed that the SR variations are inversely proportional to the overall slope angle variations, illustrating the important role that the geometric design of the haul roads has in the return on capital.

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Section: Figurementioning

confidence: 83%

Section: Mining Mineraçãomentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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The impact of haulroad geometric parameters on open pit mine strip ratio

2019

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“…As an initial study phase, conceptual economic analysis was performed considering the parametric method of the O'Hara cost estimator. This method is used in mine cost estimation to predict capital and operating costs [21].…”

Section: Economic Conceptual Analysismentioning

confidence: 99%

A Holistic Approach in Re-Mining Old Tailings Deposits for the Supply of Critical-Metals: A Portuguese Case Study

et al. 2019

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Demand growth for metallic minerals has been faced with the need for new techniques and improving technologies for all mining life-cycle operations. Nowadays, the exploitation of old tailings and mine-waste facilities could be a solution to this demand, with economic and environmental advantages. The Panasqueira Mine has been operating for more than a century, extracting tungsten and tin ore. Its first processing plant, "Rio", was located near the Zêrere river, where mineral-processing residues were deposited on the top hillside on the margin of this river in the Cabeço do Pião tailings dam. The lack of maintenance and monitoring of this enormous structure in the last twenty years represents a high risk to the environment and the population of the surrounding region. A field-sample campaign allowed the collection of data, and resulted from laboratory tests to use regression optimization. Re-mining the tailings by hydrometallurgical methods was considered to satisfy the two conditions of metal demand and environmental risk. The metal content in Cabeço do Pião was shown be enough for environmental restoration. The re-mining solution was studied, taking into account the technical, economic, social, and environmental aspects.

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“…An assessment of the proportion of the total investment in fleet which is divided between each section of the mine is required to evaluate this consequence. Techniques such as O'Hara's cost estimating model (O'Hara, 2008), and detailed cost calculations (Hustrulid and Kuchta, 1995) have been developed to evaluate the fleet capital investment. Since a complete and constant inventory of the mine fleet is not found in the case study, O'Hara's model is implemented to forecast approximate capital costs, first for the entire mine, and then specifically for the RS02 section.…”

Section: Governing Risk Elements Through Open Pit Slope Optimizationmentioning

confidence: 99%

Governing risk elements through open pit slope optimization

Golestanifar

Ahangari

Goshtasbi

et al. 2018

J. South. Afr. Inst. Min. Metall.

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With the increasing competition in global mineral markets, designers are attempting to drive down overall mining costs. The demands for steeper pit slopes have triggered developments in the field of modern and comprehensive slope design. Risk-based optimization techniques are one of the most challenging state-of-the-art solutions for enhancing conventional procedures. Recognizing risk aspects has a fundamental role in updating the methods. Considering geotechnical and mine planning issues, this study describes the consequences of varying slope angles on final pit walls. Twenty-three risk elements are introduced and discussed in four groups: economic, technical, strategic, and regulatory compliance. Related examples are given on the state of the elements, and possible ways to achieve them from overall slope optimization studies of the Sungun copper mine in Iran. The circumstances indicate that decisions on optimized slopes do not relate only to geotechnical studies, but that relevant consequences depend on the four groups. Evaluation of the elements can promote slope optimization based on the concepts of risk. pit slope design, risk evaluation, slope stability, mine planning, Sungun copper mine.

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Open Pit Mine Planning and Design, Two Volume Set & CD-ROM Pack

Cited by 91 publications

References 0 publications

The impact of haulroad geometric parameters on open pit mine strip ratio

The impact of haulroad geometric parameters on open pit mine strip ratio

A Holistic Approach in Re-Mining Old Tailings Deposits for the Supply of Critical-Metals: A Portuguese Case Study

Governing risk elements through open pit slope optimization

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