The application of three-down-two-up and inclined to Y type ventilation in work surface 2301, 3302, 3301 of Sihe mine has got good effects and the up corner gas is under control.
结合寺河矿2301、3302、 3301工作面应用三进两回偏Y型通风方式，取得良好效果，上隅角瓦斯始终处于受控状态。
The application of three-down-two-up and inclined to Y type ventilation in work surface 2301, 3302, 3301 of Sihe mine has got good effects and the up corner gas is under control.
结合寺河矿2301、3302、 3301工作面应用三进两回偏Y型通风方式，取得良好效果，上隅角瓦斯始终处于受控状态。
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