آخرین محصولات
A system-wide approach to minimize the operational cost of …
The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize …
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Enumeration optimization of open pit production scheduling
The optimization of open pit mine production scheduling is not only a multistage decision-making problem but also involves space–time dynamic action among multiple factors, which makes it ...
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Open pit optimization in 3D using a new artificial …
Open pit optimization in 3D using a new artificial neural network. Ahmad Reza Sayadi. Archives of Mining Sciences. Determination of the pit limits is a vital task in the designing process of a mine. While overestimation …
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Calculating ultimate pit limits and determining pushbacks in open-pit
A very important part of any open-pit mining project is determining the ultimate pit limits and optimizing the pushbacks. Currently, block models are the most widely used for calculating mineral resources and reserves. Block models can define the ultimate pit limits through algorithms like floating cone, Lerchs-Grossmann, PseudoFlow, …
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(PDF) Dynamic optimization of open-pit coal mine
A dynamic optimization method was created to address the production schedule issue in an open-pit coal mine while taking into account the characteristics of the fuzzy structured element.
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Enumeration optimization of open pit production …
The research shows that the open pit mine production scheduling optimization algorithm proposed in this article can not only …
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Effect of Blast Movement Uncertainty on Dig-Limits Optimization in Open
Dig-limit optimization in open pit mines through genetic algorithms. (Master thesis, McGill University, Canada). Ruiseco, J. R., & Kumral, M. (2017). A practical approach to mine equipment sizing in relation to dig-limit optimization in complex orebodies: Multi-rock type, multi-process, and multi-metal case. Natural Resources Research, 26(1 ...
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A New Method for Haul Road Design in Open-Pit Mines to …
block into an open-pit mine boundary optimization algorithm such as the Lerchs-Grossmann [28], Korobov [29], and Floating Cone [30, 31] algorithms. After analyzing the optimal boundary of the.
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A dynamic stochastic programming approach for open-pit mine …
Global optimization of open pit mining complexes with uncertainty. Appl. Soft Comput., 40 (2016), pp. 292-304, 10.1016/j.asoc.2015.11.038. View PDF View article View in Scopus Google Scholar. Goovaerts, 1997. P. Goovaerts. Geostatistics for Natural Resources Evaluation. Oxford University Press, NY (1997)
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(PDF) Optimization of open pit haulage cycle using a …
In this paper, a two-phase simulation-based optimization is presented to maximize utilization of hauling system in the largest Iranian open-pit copper mine. In the first phase, The OptQuest for Arena software package was …
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Introduction to Open Pit Optimization | Udemy
Description. Open pit optimization is an import step in the mine planning process it is used to define the most profitable pit shell (or nested pit shells) for a given set of …
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Study on Optimization of Coal Truck Flow in Open-Pit Mine
A semicontinuous process system consisting of a single-bucket excavator, truck, crushing station, and belt conveyor is the main coal mining process system of a large-scale hard coal open-pit mine. Through analyzing the coal mining production process, the key issues of coal mining truck flow optimization are obtained. Statistical method of …
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Optimization of open-pit mine design and production …
Turan, G., Onur, A.H. Optimization of open-pit mine design and production planning with an improved floating cone algorithm. Optim Eng 24, 1157–1181 (2023). …
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Open Pit Optimization – How I View It
One of the first steps in an open pit design is the pit optimization analysis. Pit optimization is used to define the most profitable pit shell for a given set of …
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(PDF) Thesis: Underground Mine Plan Optimisation
A simple model for open pit optimisation with open pit values, m i . The blocks in the optimal pit are shown in green. Example of X p and X u sets of vertices (See Section 3.2.2) and γ arcs (See ...
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Optimizing Open-Pit Truck Route Based on Minimization of Time
This paper addresses a special truck routing optimization problem in open-pit mines based on the minimization of time-varying transport energy consumption. A mixed-integer programming model is formulated to clearly describe the engineering problem, and a series of constraints are deduced to strengthen the model. To ensure that the …
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Improving performance of open-pit mine production scheduling
A variable neighbourhood descent algorithm for the open-pit mine production scheduling problem with metal uncertainty [J]. Journal of the Operational Research Society, 2014, 65: 1305–1314. Article Google Scholar SHISHVAN M S, SATTARVAND J. Long term production planning of open pit mines by ant colony optimization [J].
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Dynamic phase-mining optimization in open-pit metal mines
Dynamic phase-mining optimization in open-pit metal mines. Three important aspects of phase-mining must be optimized: the number of phases, the geometry and location of each phase-pit (including the ultimate pit), and the ore and waste quantities to be mined in each phase. A model is presented, in which a sequence of geologically …
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Cutoff grades optimization in open pit mines using meta-heuristic
This paper presents a new metaheuristic approximation approach based on the Ant Colony Optimization (ACO) for the solution of the problem of open-pit mine production planning. It is a three-dimensional optimization procedure which has the capability of considering any type of objective function, non-linear constraints and real …
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Simulation and Optimization in Open Pit Mines
The mathematical model will be coupled with the simulation model at the dispatching stage for shovel allocation optimization and thus it will act as the link to optimal short-term schedule to...
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Optimized Open Pit Mine Design, Pushbacks and the Gap …
In the context of an open pit optimization problem, the technique applied to the problem of finding a pit of a fixed tonnage is shown. This can be done by modeling the ultimate pit as a LP, with the added constraint that the number of blocks in the pit is a fixed amount, say b: n max ci xi, x j − xi ≤ 0 (vi, v j ) ∈ A(G ), i =1 n xi ...
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Strategic mining options optimization: Open pit mining, underground
Mining starts from open pit phases 2, 3 and 4 (OP_2, OP_3 and OP_4) and progresses to the OS and open pit phase 1 (OP_1). Year 1 is mainly for underground access development. Processing starts in year 2 and ramps up to full capacity in year 3. All material mined are processed since it falls above the cut-off grade.
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Open pit limit optimization considering economic profit, ecological
Trans. Nonferrous Met. Soc. China 31(2021) 3847âˆ'3861 Open pit limit optimization considering economic profit, ecological costs and social benefits Xiao-chuan XU, Xiao-wei GU, Qing WANG, Yun-qi ZHAO, Zong-kang WANG College of Resource and Civil Engineering, Northeastern University, Shenyang 110819, China Received 24 …
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Truck Dispatching Optimization Model and Algorithm Based on 0
This study established a truck dispatching model adopting 0-1 decision variables to rationally allocate truck transportation in open-pit mines, maximize the total loading and unloading volume of trucks, and solve the problem of the inability of the truck dispatching model to guide production in open-pit mines because of nonspecific results. …
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APPLICATION OF OPTIMISATION TECHNIQUES IN OPEN …
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. These applications include ore-body modelling and ore-reserve estima-
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Optimization of Open Pit Gold Mine Design Capacity Using Lag …
Optimization of design capacity and boundaries of open pit mines, schedules of mining operations and depths of transition from surface to underground mining attracts much attention of researches both in Russia and abroad [1–24].Many methods and algorithms are proposed for the problem solution, for example, the Lerchs–Grossmann …
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Optimization of open-pit mine design and production planning …
A dynamic optimization method was created to address the production schedule issue in an open-pit coal mine while taking into account the characteristics of the fuzzy structured element.
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Pit Optimization – More Than Just a "NPV vs RF" Graph
Often in 43-101 technical reports, when it comes to pit optimization, one is presented with the basic "NPV vs Revenue Factor (RF)" curve. That's it. Revenue Factor represents the percent of the base case metal price (s) used to optimize for the pit. For example, if the base case gold price is $1600/oz ( RF), then the 80% RF is $1280/oz.
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Extended Ultimate-Pit-Limit Methodology for Optimizing
The transition from surface mining to underground is a critical issue for metal mines. The commonly cited procedure cored by ultimate-pit-limit (UPL) methodology is restricted to maximize the profit from both surface and underground mining, due to the absence of the integration of the profit from either of them. Under the target for such …
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Optimized open pit mine design, pushbacks and the …
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 …
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