云南省位于地球北纬21°～29°、东经98°～106°,处于亚热带地区,为我国云贵高原组成部分。此地金属矿山众多,是我国有色金属重要产地之一。这些矿山一般位于海拔1800～2400米之间,东川矿区海拔达3000米。众所周知,高山地区由于海拔高度的影响,其矿井通风是与平原地区有所不 Yunnan Province is located at 21 ° ~ 29 ° north latitude and 98 ° ~ 106 ° east longitude in the subtropical region, and is an integral part of China’s Yunnan-Guizhou Plateau. Many metal mines here, is one of China’s important non-ferrous metals. These mines are generally located at an altitude of 1800 to 2400 meters, Dongchuan mining area at an altitude of 3000 meters. As we all know, alpine areas due to the impact of altitude, the ventilation of the mine is somewhat different from the plains