为确保平煤二矿三水平回风井挂网前后通风困难时期各用风地点风量充足、通风系统稳定及主要通风机合理、稳定的运转,对矿井通风系统进行技术测定,提出了矿井通风系统优化改造方案。利用计算机对各个方案进行解网分析后,最后确定了三水平风机挂网前后通风系统优化改造方案 In order to ensure adequate air flow at various wind sites during the difficult ventilation period before and after the three-level air return wells of Pingdingshan No.2 Mine were hung, the ventilation system was stable and the operation of the main ventilator was reasonable and stable, the technical determination of mine ventilation system was made and the ventilation system Optimization of transformation programs. Using computer to solve the network analysis of each program, the final three-level fan before and after the network ventilation system optimization program