VENTILATION OF AN OPEN-PIT MINE USING WIND ENERGY
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This study examines the principles of air movement within open-pit mines and the natural forces that influence these movements. Various ventilation schemes are analyzed, including direct-flow, recirculation, convection, and inversion schemes, with a focus on wind-driven ventilation. The formation of direct-flow and recirculation schemes depends largely on the geometry of the pit and the slope angle of the pit walls. Direct-flow ventilation ensures efficient removal of harmful substances without creating stagnant zones, while recirculating ventilation allows continuous extraction of pollutants through a stable mass core. Additionally, combined ventilation schemes (direct-flow–recirculation and recirculation–direct-flow) are used for pits with varying geometry or large dimensions along the wind direction. The study highlights the significance of wind speed, pit wall angles, and pit geometry in designing effective natural ventilation for open-pit mines.
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