The key elements and strategies for gas control and ventilation system optimization in underground coal mines were studied.The formation mechanism and hazards of underground gas in coal mines were introduced,and the elements of gas control,including gas extraction,gas suppression,gas monitoring,etc.,were discussed in detail,the strategies for optimizing the design of underground ventilation systems were analyzed,including ventilation parameter optimization,ventilation network optimization,air flow distribution optimization,etc.,in order to provide reference for relevant research and practice.
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