"两硬"条件高瓦斯放顶煤工作面瓦斯防治技术探讨

放顶煤综采工作面由于其工艺的特殊性,瓦斯防治工作一直是安全开采的难题之一,大同矿区特有的“两硬”条件（坚硬顶板、坚硬煤层）作开采时其顶板、顶煤难以冒落,给瓦斯治理带来了更多的困难.经过近几年的攻关研究,同煤集团已经形成了一整套行之有效的方法,保证了矿井的安全生产.本文对“两硬”条件下的高瓦斯放顶煤工作面的瓦斯防治方法做一简单的介绍.

The technology of methane prevention applied in "dual hard" caving workface

Since the caving method is a special mining method, the methane prevention always is one of major safety problems to be solved. It is difficult to control methane in longwall caving workface because dual hard geology condition( roof hard and coal hard) in Datong coal field. A series of technique measures which achieved safety mining had been developed through last years research work in Datong.These effective measures will briefly introduced in this paper.