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应用电子计算机解算现在及将来哈达岗煤矿七井有无私营井情况下的通风网路，分析私营井对国营井通风系统的破坏程度以及对安全生产的危害
Using computer to solve the ventilation network of the existing and future seven wells in the Hadakang coal mine with or without private wells, and to analyze the extent of damage to the ventilation system of the state-owned wells by the private wells and the harm to safety in production