With the increase of mining scope and depth of coal mines,the mine ventilation system has gradually become complicated,and it is necessary to optimize the ventilation system to improve its efficiency and meet the mine production.Taking No.3 mining area of Shuangliu Coal Mine as the research object and combining with the site situation,the optimization scheme and safety technical measures of ventilation optimization in mining area were formulated.After the field application,the ventilation system in No.3 mining areas effectively completed the construction of the main fan blade angle,ventilation facilities and the sealing of the abandoned roadway,and there were no ventilation anomalies and gas emission increases during the period,indicating that the ventilation system optimization scheme and safety technical measures adopted on the site were effective.
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