mechanized heading face

In coal mine, the mechanized heading face is the chief place where dust is produced. It is also the place where gas and coal-dust explosion frequently occurs.
机掘工作面是煤矿井下主要产尘地点之一,也是煤尘瓦斯爆炸事故的多发地点,如何有效地控制机掘工作面粉尘扩散,防止工作面瓦斯局部集聚,已成为矿井掘进通风急需解决的问题。