Mine air pollution source

Sources of pollutants from mine air pollution sources that cause atmospheric pollution in mines. The composition, traits and impact range of mine air pollution sources are closely related to deposit type, burial conditions, rock properties, mining methods and process technologies. Its classification methods mainly include: (1) According to the scope of influence of pollutants, it can be divided into mine or mine pit, air pollution source and air pollution source in mining area. (2) According to the harmful substances released by the pollution source, the dust pollution source, the gas pollution source, the radioactive pollution source and the thermal pollution source. (3) According to the causes of pollutants, it can be divided into process pollution sources and non-process pollution sources. Process pollution sources, also known as man-made pollution sources, belong to such pollution sources: rock drilling, blasting, support, roofing, filling, rock loading and unloading, transportation, crushing, grading, etc. In these processes, dust, gunpowder, Pollutants such as diesel engine exhaust gas and compressed gas exhaust gas will pollute the mine's atmospheric non-process pollution source, also known as natural pollution source. It is a secondary pollution source caused by the mining process. Ten of these pollution sources are: weathering, oxidation and spontaneous combustion of ore. The escape, gushing or ejecting of gaseous and particulate matter in the formation, the precipitation and radiation of radioactive materials in the ore, the conduction, radiation and convection of geothermal heat , the decomposition and decay of organic matter such as pit wood. Pollutants such as dust, toxic and harmful gases, radioactive materials and heat released during these natural processes can also contaminate the mine atmosphere.

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