FIELD: mining industry. SUBSTANCE: method for ventilation of quarry implies creation of freely convecting flow with the help of electrically heated surfaces located along quarry sides. For more effective ventilation due to simplified system of surface heating and creation of freely convecting turbulent flow, subjected to heating is guarding screen, its components are located in tiers on incline sides of quarry which are interconnected and form a sector. Heat flow of similar density is generated on heated surfaces. EFFECT: high efficiency. 4 dwg
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