近年来为了使内燃设备安全地用于井下，很多研究人员在控制设备的排污量方面，做了大量的工作，并取得了一定的成果。然而，从内燃设备在井下的实际工作过程来看，巷道内空气被污染的状况，不仅取决于设备的排污量，同时在相当程度上，还取决于设备的工作状态。同样的排污量，由于设备的工作状态不同，可使巷道空气中的有害气体浓度相差很大。因此，了解内燃设备不同工作状态对巷道的污染状况，对于合理使用内燃设备，以保证井下空气符合国家卫生安全标准，是极其重要的。内燃设备在井下工作时，可分为三种工作状态：逆风运行，顺风运行和静止工作。井下空气被污染的 In recent years, many researchers have done a great deal of work on controlling the amount of pollutants discharged from equipment to make the internal combustion equipment safely used in the well. Some achievements have been made. However, from the actual working process of the internal combustion equipment downhole, the pollution of the air in the roadway depends not only on the amount of pollutant discharged by the equipment, but also on the working condition of the equipment to a certain extent. The same amount of sewage, due to the different working conditions of the equipment, can make a great difference in the concentration of harmful gases in the air in the roadway. Therefore, it is very important to understand the pollution status of roadways caused by different working conditions of internal combustion equipment. It is very important for the reasonable use of internal combustion equipment to ensure that the underground air meets the national health and safety standards. Internal combustion equipment in underground work, can be divided into three working conditions: upwind operation, downwind operation and stationary work. Downhole air is polluted