Ventilation design alternatives for underground placer mines in the arctic.
Bandopadhyay-S; Wu-H; Nelson-MG; Izaxon-V
Proceedings of the 6th International Mine Ventilation Congress, May 17-22, 1997, Pittsburgh, Pennsylvania. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc. 1997 Feb; :58-61
The method of mine ventilation involving heated air, which is frequently used in mines in cold regions, does not correspond to the natural conditions prevailing in permafrost regions; it is not economical and leads to a series of complications which can be prevented or greatly reduced by lowering the temperature of the air stream entering the mine until it is equal to or very close to the temperature of the frozen ground. This paper presents ventilation design approaches which can be engineered to provied the required micro-climate and thus ensure the stability of the ground for placer mines in permafrost. Specifically three ventilation design approaches are presented: 1) design based on minimum thermal impact; 2) design based on positive / negative heat accumulation in the existing mine airways; and 3) design based on heat exchanging devices such as thermosyphons placed above ground.
Ventilation; Underground-mining; Mining-industry; Temperature-effects; Temperature-control; Air-flow; Heat-exposure; Heat; Heat-exchange
Proceedings of the 6th International Mine Ventilation Congress