نتایج جستجو برای: open pit mine production planning

تعداد نتایج: 1190554  

Short-term production plans are the basis for operational mine production schedules. They concentrate on making long-term mine plans operationally feasible. Furthermore, some variables such as ore grade and tonnage govern mine production systems and cause uncertainty in the supply of raw materials to the mills. Due to the quality variation of material, short-term production optimization is an u...

Journal: :Sustainability 2023

Noise emissions are a significant environmental impact caused by the mining industry in all technological phases of surface mining, mineral processing, and waste disposal. This paper presents role noise assessment control large-scale operations. Mine planning develops model operations, ore excavation, dumping scheduling processing rates, including spatial distribution activities. Such level min...

2009
Renaud Chicoisne Daniel Espinoza Marcos Goycoolea Eduardo Moreno Enrique Rubio

For the purpose of production scheduling, open pit mines are discretized into threedimensional arrays known as block models. Production scheduling consists in deciding which blocks should be extracted, when they should be extracted and how each extracted block should be processed. Blocks which are on top should be extracted first, and capacity constraints limit the production each time period. ...

Journal: :Indonesian mining journal 2022

The prevailing mining climate is highly characterized by unstable consumables pricing systems, a volatile economy and skyrocketing operational costs, exacerbated steady decline intermittence in the availability of electricity. Zimbabwean mines need to extensively capitalize on opportunity improve productivity emphasizing variables they can control, predominantly efficiency avoid resizing operat...

2009
Jorge Amaya Daniel Espinoza Marcos Goycoolea Adolfo Ibañez Eduardo Moreno Thomas Prevost Enrique Rubio

A critical aspect of long-term open-pit mine planning consists in computing a production schedule based upon a block sequencing strategy. Such a schedule should specify when and if blocks should be extracted in such a way as to maximize NPV, while satisfying wall-slope and production capacity constraints. It is well known that this problem can be modeled with integer programming (IP). However, ...

Journal: :E3S web of conferences 2021

In recent years, there has been a decline in the efficiency of coal mining by traditional methods. On one hand, volume outside contour cut, which is economically impractical for open-pit mining, increasing. other when using underground geotechnology, cost production exceeds performing operations open this due to differences factors operation pit and mine. This circumstance determines use open-u...

Journal: :Applied Engineering Letters : Journal of Engineering and Applied Sciences 2020

2015
Hao Wu Yuanfeng Dong Wenzhong Shi Keith C Clarke Zelang Miao Jianhua Zhang Xijiang Chen

The forecasting slope deformation potential is required to evaluate slope safety during open-pit mining, allowing us to formulate and promote effective emergency strategies in advance to prevent slope failure disasters. Although fractal models have been used to predict slope deformation, such limitations as low prediction accuracy, poor stability and the requirement for large amounts of data mu...

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