过去十年中,南非各金矿的入风井通风量提高了30％以上,超过3.5万米~3/秒。这样大的通风风流再加上矿井排放的污染物(如瓦斯、粉尘和热气等)又带出了大量的水。大部分是呈水蒸气形态。在干燥天气条件下,南非矿区入风井风流的含水量波动范围是:冬季约为4克/公斤,夏季为10克/公斤。显然,在雨天条件下,风流含水量要大大增加。当风流进入井下并且通过各种巷道时,风流温度升高,潮 Over the past decade, the air intake of all gold mines in South Africa increased by more than 30%, exceeding 35,000 m 3 / s. Such a large ventilation and air pollution coupled with the mine discharge (such as gas, dust and heat, etc.) brought out a lot of water. Mostly in the form of water vapor. In dry weather conditions, the moisture content of the windshield in South African mines fluctuates from about 4 g / kg in winter to 10 g / kg in summer. Obviously, under rainy conditions, the wind flow moisture content should be greatly increased. When the wind into the well and through a variety of roadway, the wind temperature, tide