利用矿井负压引排回风在掘进中的运用

根据设计的掘进巷道,综采支架安装峒室最大设计净断面为32.7m2,掘进工作面沼气绝对涌出量为:0.63m3/min,二氧化碳绝对涌出量为:0.16m3/min,掘进工作面同时工作的最多人数为19人,掘进工作面一次爆破使用的最大炸药用量为11Kg,该掘进为全岩巷道,采用压入式通风。

the application of negative pressure of mine in directing and ventilating the return air in driving, in designing the driving ventilation and calculating ＆ choosing the return air pipe has the effect to avoid series ventilation, enhance the safety and stability of ventilation and conserve energy. The technique has promotional vale in its application.