由于无轨机械化采矿方法的推广,井下柴油机车辆不论在数量上和其发动机规格上都有了惊人的增长。然而大型柴油机的使用提出了排放热量和废气的问题。散热对于深度不大的矿山不成问题,但若使废气浓度控制在预期范围,则需对供风量及风量控制加以研究。在使用无轨机械化采矿方法后不久,南非一些矿山开始报告氧化亚氮的浓度正逼近 As a result of the promotion of trackless mechanized mining methods, the underground diesel vehicles have experienced astonishing growth both in quantity and in engine specifications. However, the use of large diesel engines has raised the issue of emitting heat and exhaust gases. Cooling for the mine is not a big problem, but if the exhaust gas concentration control in the expected range, the need for air supply and air volume control to be studied. Shortly after the use of trackless mechanized mining methods, some mines in South Africa began reporting a near-simultaneous concentration of nitrous oxide