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open pit mine design factors

Determining the Most Effective Factors on Open Pit Mine ...

高达10%返现  Determination of ultimate pit limit, and sequence of blocks extraction through the mine life is referred as mine design and planning. The aim of mine design and planning is to develop a yearly extraction plan which guides the mining operation to the highest Net Present Value (NPV). Future mines are going to be giant mines that exploit low grade ...

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Open-Pit Mine Planning and Design

of Open Pit Mine Planning and Design starting at the geological resource model, through to the reserve statement and including all aspects of the value chain. This unique course enables you to learn the basic theory of open pit mine design and the application thereof, whilst having the chance to interact with experts in the field.

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Surface mining planning and design of open pit mining

Jan 09, 2016  Surface mining planning and design of open pit mining 1. This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors. Permission of the author and publisher is required for any other usage.

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GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

practice in open pit mines. The application of sound geotechnical engineering practice is considered to be an integral component of Part 2 of the Mines Safety and Inspection Act 1994 (MSIA). It is emphasised that this guideline is not totally inclusive of all factors concerning the application of geotechnical engineering in open pit mining.

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Basics of an open pit mine - Mine Engineer.Com

The selection of physical design parameters and the scheduling of the ore and waste extraction program are complex engineering decisions of enormous economic significance. The planning of an open pit mine is, therefore, basically an exercise in economics, constrained by certain geologic and mining engineering aspects. ... Open pit mines can be ...

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Optimized open pit mine design, pushbacks and the gap ...

the time of pushback design is proposed, which can lead to mine designs with increased NPV. Keywords: Pushback design, open pit optimization, cardinality constrained graph closure. DOI: 10.1134/S1062739114030132 INTRODUCTION Open pit mine design and long-term production scheduling is a critically important part of mining ventures.

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Selection of practical bench height in open pit mining ...

In open pit mining, factors that can affect the degree of dilution can be regarded as deposit-related or mine-related. The bench height is a mine-related parameter that can be studied using a simple geometrical model of the deposit. By changing this parameter individually, while the deposit-related parameters (such as ore

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(PDF) Surface Mine Design - ResearchGate

An open pit mine is an excavation or cuts mad e at the surface of t he ground to extract ore which is open to the sur face fo r the mine’s operational time. In order to expose

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Slope Stability Acceptance Criteria for Opencast Mine

Open-pit slope engineering involves balancing economic imperatives and risk, where an optimum pit slope design seeks to safely steepen the pit slope angles to minimize the mining of waste ...

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SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

Analyses of a deep wall in an open pit mine in the Peruvian Andes are used to compare limit equilibrium methods (SLIDE) with distinct element methods (UDEC) when the stability is controlled by rock mass strength. The pit wall has an overall slope angle of 37º and a height of 600 metres with an inter-ramp angle of 45º.

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Determining the Most Effective Factors on Open Pit Mine ...

Determination of ultimate pit limit, and sequence of blocks extraction through the mine life is referred as mine design and planning. The aim of mine design and planning is to develop a yearly extraction plan which guides the mining operation to the highest Net Present Value (NPV). Future mines are going to be giant mines that exploit low grade ...

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Pit Slope Design Process - Home - LOP

Slope design is an integral part of the engineering of an open pit, regardless of its size. Most cases the slope angles are a key component dictating the economic viability of a proposed or current mining project. This has resulted in open pit mining operating with much lower Factor of Safety tolerances that would be used in civil engineering.

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Design of openpit mining - SlideShare

Mar 13, 2012  E Contd.E. Pit design Overall slope of a pit depends on several factors of the pit slope: a) Geological disturbances like faults etc. b) Hydrological condition of strata c) Orientation of slip planes d) Nature of strata – i.e. hardness, material consolidation etc. e) Depth of workings f) Design of haul roads ramps in the highwall g ...

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Optimization of blasting design parameters on open pit bench

mines Nchanga Open Pit mines are located in Chingola, in the Copperbelt province of Zambia. Open Pit mining at Nchanga started in 1938, in the main Nchanga Open Pit. More than a decade ago, Nchanga Open Pit was the largest base metals open cut in the world. It is still among the top five largest open cuts in the world. The mine’s core

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Basics of an open pit mine - Mine Engineer.Com

The selection of physical design parameters and the scheduling of the ore and waste extraction program are complex engineering decisions of enormous economic significance. The planning of an open pit mine is, therefore, basically an exercise in economics, constrained by certain geologic and mining engineering aspects. ... Open pit mines can be ...

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Open Pit Mine Design Research Papers - Academia

Bioremediation, Pit Lakes, Open Pit Mine Design, AMD Stability Analyses of Footwall Slopes in Open Pit Mining En éste artículo se analizan diferentes mecanismos de rotura típicamente asociados a taludes de muro, con el objetivo de poder evaluar su estabilidad, mediante el código numérico UDEC (Código de Elementos Distintos Universal).

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Open pit mine planning considering geomechanical

of the mine [4]. Several factors must be taken into account during the mine planning process to fulfil the main goal of the open pit mine planning to maximise the value of the business according to the strategic objectives of the mining company. These factors include the economic parameters, such as, costs and

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Pit Optimization – How I View It

Jun 03, 2015  One of the first steps in open pit mine design is the pit optimization analysis. Pit optimization is used to define the most profitable pit shell (or nested pit shells) for a given set of economic parameters. The economic parameters include

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THE IMPORTANCE OF DILUTION FACTOR FOR OPEN PIT

al., 1995). This paper introduces a methodology to quantify dilution factor in open pit mines. The proposed approach makes use of general mining software available in most mining companies. Therefore it is amenable to most mining operations and provides a readily available tool for understanding mining

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Guidelines and considerations for open pit designers - Deswik

Mar 26, 2018  The design is controlled by the engineer doing the design. Your company may have a haul road/pit design manual – use it if it exists. For those that do not have a design manual, or only have limited guidelines, then this article may help you in the process of designing your first pit. The end-purpose of your pit design will likely be:

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Everything You Need To Know About Open Pit Mining ...

Nov 01, 2018  From the initial onset of the open pit mine design planning stage, the gathering of data and getting permits, addressing the impact of mining on the environment are of the utmost importance. Beginning with exploration, the core holes must be sealed, and the site reclaimed.

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Lecture-Opencast Mining Methods.pdf - OPEN PIT MINING ...

The overall pit slope angle is the angle at which the wall of an open pit stands, as measured between the horizontal and an imaginary line joining the top bench crest with the bottom bench toe. For the duration of open pit mining, a haul road must be maintained into the pit. A spiral system is an arrangement whereby the haul road is arranged spirally along the perimeter walls of the pit so ...

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Geotechnical considerations for the stability of open pit ...

May 13, 2019  Open Pit Slope Design’ (Read Stacey 2009), are addressed in Chapter 14: Open Pit Closure (van Zyl 2009). The chapter outlines the following typical steps in developing an open pit closure plan: • Develop closure goals and criteria, with local community and other stakeholder engagement.

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(PDF) Open Pit Coal Mine Design Mohammad Lashgari ...

Open Pit Coal Mine Design. Technical Report on the Ilgin Coal Project Mineral Development, Exploration and Resources and Pit Design and Production Planning Prepared as a Course Project Report for: Mine Planning with the Aid of Computer Bilgisayar Dest. Maden Planl. MAD 502 Date of Report: 14th May, 2015 Prepared by: Mohammad Lashgari 505141014 ...

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Geotechnical Factors In Open Pit Mine Design U.S. Rock ...

1.0 N. The object of this paper is to discuss those aspects of open pit mine design which are affected by geotechnical factors. The temptation exists for some practitioners of geotechnical engineering to believe that this relatively new engineering discipline is the 'be all and end all of mining., In the opinion of the authors, this is fallacious but, as our ability to put numbers to the ...

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Optimization of blasting design parameters on open pit bench

mines Nchanga Open Pit mines are located in Chingola, in the Copperbelt province of Zambia. Open Pit mining at Nchanga started in 1938, in the main Nchanga Open Pit. More than a decade ago, Nchanga Open Pit was the largest base metals open cut in the world. It is still among the top five largest open cuts in the world. The mine’s core

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Analysis of Safety Aspects And Mining Practices For ...

efficient mine plans. Study of South Wales open-pit site (3) provides significant relationships between the slope design and structural geological factors. The geological parameters that are most relevant to rock slope stability are: • The persistence, attitude, and nature of discontinuities within the rock mass.

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Optimal Open Pit Design and Life of Mine Scheduling of the ...

70 GJJTT Vol. 2, No. 2, March, 2018 Optimal Open Pit Design and Life of Mine Scheduling of the Bisha Volcanogenic Massive Sulphide Deposit* 1P. A. Eshun and 2N. Baafi 1University of Mines and Technology, P.O. Box 237, Tarkwa, Ghana. 2Perseus Mining Ghana Limited, 4 Chancery Court, P.O. Box, CT 2576, Cantonments, Accra, Ghana. Eshun, P. A and Baafi, N. (2018), “Optimal Open Pit

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Pit Optimization – How I View It

Jun 03, 2015  One of the first steps in open pit mine design is the pit optimization analysis. Pit optimization is used to define the most profitable pit shell (or nested pit shells) for a given set of economic parameters. The economic parameters include

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Methodology for a dump design optimization in large

In large-scale open pit mines, the mining process is rather complex and often involves different run-of-mine (ROM) ore and waste material treatment downstream. Appropriate areas to place these large amounts of material are limited and their selection and design must serve the environmental factors and economic goals of the long-term mine plans.

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Guidelines and considerations for open pit designers - Deswik

Mar 26, 2018  The design is controlled by the engineer doing the design. Your company may have a haul road/pit design manual – use it if it exists. For those that do not have a design manual, or only have limited guidelines, then this article may help you in the process of designing your first pit. The end-purpose of your pit design will likely be:

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Planning Considerations For Transition From Open Pit To ...

Planning Considerations: The efficient transition from open pit mining to an underground operation requires extensive planning. For a large mining operation, planning could last as long as 20 years. The main factors and activities that need to be taken into account in the planning cycle are as follows: Definition of the ore body.

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DETERMINATION OF ULTIMATE PIT LIMITS IN OPEN MINES

Abstract: Planning and design procedure of an open pit mining project just can be started after ultimate pit determination. In the carried out study in this paper it was shown that the most important factor in ultimate pit determination and in consequence in the whole planning and design procedure of an open pit mine is the metal price.

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Development of a mine dewatering and pit slope ...

Most large open pit mines eventually require some form of proactive depressurisation in order to support desired Factor of Safety (FoS) for the inter-ramp and overall slope design angles. The impact of groundwater on pit wall stability and the role of pore pressure on

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CONSIDERATIONS IN THE OPTIMISATION OF BENCH FACE

The South African Institute of Mining and Metallurgy International Symposium on Stability of Rock Slopes in Open Pit Mining and Civil Engineering Ian de Bruyn _____ Page 558 height, bench face angle and berm width can be used in the slope design. All geometrical pit slope elements referred to here are illustrated in Figure 1. The

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(PDF) Open Pit Coal Mine Design Mohammad Lashgari ...

Open Pit Coal Mine Design. Technical Report on the Ilgin Coal Project Mineral Development, Exploration and Resources and Pit Design and Production Planning Prepared as a Course Project Report for: Mine Planning with the Aid of Computer Bilgisayar Dest. Maden Planl. MAD 502 Date of Report: 14th May, 2015 Prepared by: Mohammad Lashgari 505141014 ...

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Lecture-Opencast Mining Methods.pdf - OPEN PIT MINING ...

The overall pit slope angle is the angle at which the wall of an open pit stands, as measured between the horizontal and an imaginary line joining the top bench crest with the bottom bench toe. For the duration of open pit mining, a haul road must be maintained into the pit. A spiral system is an arrangement whereby the haul road is arranged spirally along the perimeter walls of the pit so ...

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Open-Pit Mining Methods

Apr 09, 2017  The stripping-ore ratio is a basic factor used for determining whether to employ open-pit or underground methods and for determining the economic limits of open-pit mining. Other factors influencing the choice between open-pit and underground methods may be inferred from the advantages and disadvantages of open-pit mining, some of which are ...

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