在对某矿改扩建前的１４采区主要通风机性能参数进行实测的基础上，文章导出了其特性方程，绘制了相应的特性曲线，并就其运行状况进行了分析。 Based on the measurement of the performance parameters of the main ventilators in the 14 mining areas before the renovation and expansion of a mine, the article derived its characteristic equation, plotted the corresponding characteristic curve and analyzed its operation status.