نتایج جستجو برای: open pit mines

تعداد نتایج: 407524  

Journal: :Frontiers in Earth Science 2022

Many coal mines are being abandoned for economic and environmental reasons in China. The repurposing of open-pit into pumped storage hydropower (PSH) can help with the renewable energy, improve mine environments, provide added value. Construction PSH plant will change water level pit, which is envisaged as lower reservoir, thus influencing slope stability. In this study, Fushun West Open-Pit wa...

A.D. Akbari, M. Osanloo , M.A. Shirazi ,

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. Metal price fluctuations in recent years were exaggerated and impose...

A Jafarnejad Ali Asghar khodaiari,

Maximizing economic earnings is the most common goal in cut-off grade optimization of open-pit mining operations. When this is the case, the price of the product has a critical effect on optimum value of cut-off grade. This paper investigates the relationship between optimum cut-off grade and price to maximize total cash flow and net percent value (NPV) of operation. In order to visualize this ...

Journal: :E3S web of conferences 2021

The issue of wastewater treatment in open-pit mining mineral deposits is associated with great difficulties. Due to the constant tightening requirements for quality discharged wastewater, its sedimentation reservoirs and clarification ponds does not ensure achievement MPC values; addition, these facilities occupy significant areas land. It should also be noted that mines, as a rule, have severa...

Journal: :Navigation: journal of the Institute of Navigation 2023

Abstract The automation of mining haulage vehicles has great potential in terms safety and economy. performance autonomous depends largely on highly accurate vehicle state information. Deep mines are especially challenging, as satellite-based localization methods reaching their limits. Therefore, we introduce a new navigation filter concept for the precise robust fleet that can handle ...

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