The importance,composition,working principle,classification and layout of coal mine ventilation system were introduced,the optimization design method and resistance reduction transformation technology of coal mine ventilation system was discussed,and the impact of these improvements on economy and environment was analyzed in order to comprehensively evaluate its cost and benefit.The optimization design and resistance reduction transformation of coal mine ventilation system help to improve the efficiency of coal mine ventilation system,reduce energy consumption and safety risks,which is of great significance to the sustainable development of coal industry.
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