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17* Open Pit Optimization Strategies for Improving

presentation will outline open pit optimization techniques that are available today and how they can be used to improve overall economics of projects that are being planned or in production. 1 INTRODUCTION The current practice of planning of hard rock open pit mine begins with a geologic block model (see

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Optimized open pit mine design, pushbacks and the gap

Traditionally, the optimization of open pit mine design consists primarily of defining the “ultimate pit limits” which, in their turn, define what will eventually be removed from the ground, and dividing up the pit into manageable volumes of materials often referred to as pushbacks, cutbacks, or phases.

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Open Pit Optimisation Mining & Quarry Plant

10/10/2013· Open Pit Optimization “NPV Scheduler” Demonstration Guidelines Edition 1.0 Table of Contents OptiTek Mining Consulting Ltd. Open Pit Optimization and Phase Design .

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Optimum Design of an Open Pit SAIMM

A cone (or pit) is generated by the removal of whole blocks from the block matrix. As a pit is to be mined, the slope of the sides must not, of course, exceed the angle of failure and a maximum pit slope must be defined and observed. The pit slope considered here is the average slope generated by a step pattern (as whole blocks are removed).

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Mathematical Optimization Models and Methods for Open-Pit

In this thesis, we study the open-pit design problem, the open-pit mining scheduling problem, and the open-pit design problem with geological and price uncertainty. These problems give rise to (mixed) discrete optimization models that in real-life settings are large scale and computationally challenging. The open-pit design problem is to find an optimal ultimate contour of the pit, given

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Application of Optimisation Techniques in Open

The operation and management of a large open pit mine having a life of several (5–50) years is an enormous and complex task. Optimisation techniques can be successfully applied to resolve a number of important problems that arise in the planning and management of a mine.

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v118n7a4 A new open-pit mine planning optimization method

A new open-pit mine planning optimization method using block aggregation and integer programming by N.L. Mai*, E. Topal†, and O. Erten† 45).2. Mathematical programming has been applied to optimizing open pit mine planning problems since the early 1960s. Nonetheless, it still remains challenging to obtain a life-of-mine plan with current computational

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A guide for pit optimization with Pseudoflow in python

A guide for pit optimization with Pseudoflow in python 1 Sebastian Avalos ([email protected]) Julian M. Ortiz ([email protected]) Abstract The Pseudoflow algorithm is used to outline the ultimate pit limit by finding the maxi-mum net value of the blocks extracted, while respecting precedences for their extraction.

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DETERMINATION OF ULTIMATE PIT LIMITS IN OPEN MINES USING

DETERMINATION OF ULTIMATE PIT LIMITS IN OPEN MINES USING REAL OPTION APPROACH A.D. Akbari, M. Osanloo & M.A. Shirazi 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

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OpenTopography Optimized Pit Removal

Description. ArcGIS (version 10.1) geoprocessing script tools for removing pits (or sinks) from Digital Elevation Models using a combination of cut and fill. This alternative to the standard Fill tool provides more realistic flow paths with less required manual adjustment. Ideal

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Pit Optimization Advanced Mine Design

18/06/2020· DesignXL supports optimizing what blocks to mine in the pit using the Lerchs-Grossman algorithm. You can add your own formula for the net block value or use fixed values. The algorithm also saves the dependencies so that you can schedule the blocks later

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A guide for pit optimization with Pseudoflow in python

A guide for pit optimization with Pseudoflow in python 1 Sebastian Avalos ([email protected]) Julian M. Ortiz ([email protected]) Abstract The Pseudoflow algorithm is used to outline the ultimate pit limit by finding the maxi-mum net value of the blocks extracted, while respecting precedences for their extraction.

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Guidelines For Open Pit Slope Design deploy.demo.hipatia.cr

Performance Monitoring" is an initiative of the Large Open Pit (LOP) Project and the fifth book in the Guidelines for Open Pit Slope Design series. Its 10 chapters present the process of establishing and operating a slope monitoring system, the fundamentals of pit slope monitoring methods and instrumentation, monitoring system operation, data

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Global optimization of open pit mining

01/03/2016· 1. Introduction. Global optimization for mining complexes addresses the issue of integrated mining and processing operations with multiple pits or underground mines, multiple metals or minerals, stockpiles, blending options and alternative processing streams to yield distinct products,.The primary objective of a mining enterprise is to maximize the net present value (NPV) of its cash flows

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Methodology for a dump design optimization in large-scale

and has reconfigured the open pit haulage network with an increase in the number of dumps. Therefore, new methods for dump design optimization are of the highest priority in mine planning management. This paper presents a methodology to model and optimize the design of a dump by minimizing the total haulage costs. The loca-

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Surface mining planning and design of open

09/01/2016· 3) Open pit Optimization 2 February 2016 Prof. Dr. H.Z. Harraz Presentation Mining Methods, Surface mining 70. 3.1) The management of pit optimization The first thing to realize is that any feasible pit outline has a dollar value which can, in theory, be calculated.

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Open-Pit Mine Planning and Design University of Pretoria

Open-Pit Mine Planning and Design Presented by the Department of Mining Engineering, University of Pretoria Course content The value chain incorporated into the course consists of: • Geological resource, drill samples, ore body models and block modelling • Pit optimisation • Physical pit design • Equipment optimisation and requirements

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Minemax Planner, strategic mine and pit

The Planner pit optimization computing times were significantly faster than the Whittle pit optimization times, up to several orders of magnitude for the model comprising 9.1 million non-air blocks. Planner efficiently managed and optimized a large model comprising 16.2 million non-air blocks.

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THE TRANSITION FROM OPEN PIT TO UNDERGROUND MINING:

faults crossing the pit and 3 dominant joint sets ubiquitous in the mine. Ground water is also present. 800m 400m Figure 1 Birds-eye view of Palabora Mine and 3D model of pit and cave After completion of the open pit mining, a cave was initiated about 400 m below the pit floor, as shown in Figure 1.

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Applications of Queuing Theory for Open-Pit Truck/Shovel

19/12/2012· Applications of Queuing Theory for Open-Pit Truck/Shovel Haulage Systems Meredith Augusta May Abstract Surface mining is the most common mining method worldwide, and open pit mining accounts for more than 60% of all surface output.

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Strategic mining options optimization: Open

01/11/2016· The optimization study was based on three scenarios namely: (i) open pit mining only (OP); (ii) open stope mining only (OS); and (iii) concurrent open pit and open stope mining (COPOS). All scenarios were based on a high pre-production capital with corresponding lower operating costs.

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A guide for pit optimization with Pseudoflow in python

A guide for pit optimization with Pseudoflow in python 1 Sebastian Avalos ([email protected]) Julian M. Ortiz ([email protected]) Abstract The Pseudoflow algorithm is used to outline the ultimate pit limit by finding the maxi-mum net value of the blocks extracted, while respecting precedences for their extraction.

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Surface mining planning and design of open

09/01/2016· 3) Open pit Optimization 2 February 2016 Prof. Dr. H.Z. Harraz Presentation Mining Methods, Surface mining 70. 3.1) The management of pit optimization The first thing to realize is that any feasible pit outline has a dollar value which can, in theory, be calculated.

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ECONOMIC ASSESSMENT AND MINE PRODUCTION OPTIMIZATION

resource. Both are linked to the optimization of profits, which in mineral operations is done by optimizing the ore cutoff grade, considering the block model geometry. The Coriorcco Gold Project refers to an open-pit mining operation at pre-feasibility stage located at about 4100 meters above sea level in the Peruvian Andes. This mining project is

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Open-Pit Mine Planning and Design University of Pretoria

Open-Pit Mine Planning and Design Presented by the Department of Mining Engineering, University of Pretoria Course content The value chain incorporated into the course consists of: • Geological resource, drill samples, ore body models and block modelling • Pit optimisation • Physical pit design • Equipment optimisation and requirements

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Performance Analysis and Best Implementations of Old and

PERFORMANCE ANALYSIS AND BEST IMPLEMENTATIONS OF OLD AND NEW ALGORITHMS FOR THE OPEN-PIT MINING PROBLEM DORIT S. HOCHBAUM Department of IE& OR and Haas School of Business, University of California, Berkeley, California 94720, [email protected]

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Phase Planning for Open Pit Coal Mines

11/02/2021· Figure 4 is a 3D view of the four phase-pits of the optimized phase plan, where phase-4 pit is also the best ultimate pit. Figure 5 is a vertical cross section of the phase-pits superimposed on the coal seams in the column model. The direction of phase expansion can be clearly seen from these figures. One can also see the rationality of the optimization results from the spatial relationship

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v118n5a1 Optimization of the load-and-haul operation at an

KPIs in order to increase productivity at the target pit. Develope an optimized fleet solution for the current coal extraction operation through the basic mining equations. Conduct a basic cost evaluation for each improved KPI based on benchmarking and industry standards.

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Equipment Selection for Surface Optimization Online

however, for large-scale open pit mining in particular, the \truck and loader" material movement practice is the preferred method of materials handling (Czaplicki, 1992; Ta et al., 2005). Throughout this paper, we consider a \loader" to be any type of high productivity excavating equipment, which may include a mining loader, shovel or excavator.

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MiningMath Creating Sustainable Value

Complex multi-parameter optimization. MiningMath maximizes the NPV for any open-pit mining project, based on an imported multi-mine block model.The cut-off grade policy and mining phases definitions are now a consequence of a modern global optimization process, given a wide set of realistic mining constraints, such as operational, processing, and socio-environmental requirements.