Advancing hole is one of local prevent outburst measure at coal road heading face in coal-and-gas outburst mine.

超前钻孔是煤与瓦斯突出矿井中煤巷掘进工作面的局部防突措施之一。

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Mine local ventilation facilities failure is one of the main reason which leads to the accident of gas explosions in heading face.

矿井局部通风设备故障是导致掘进工作面较易发生瓦斯爆炸事故的主要理由之一。

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Mine ventilation frequency wet dust removal system for the heading face of coal mine dust in air.

矿用通风湿式变频除尘系统，用于对煤矿井下掘进工作面的空气进行除尘。

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