强突出矿井中间保护层探索

Explore Mid-protectiveseam in Strongly-outbursting Coal Mine

通过宏达煤矿保护层选择、本层与邻近层瓦斯预抽和卸压拦截抽、采空区抽采等防突与防灾研究,实现了强突出煤层群安全生产,解决了强突出煤层群不能采取上保护层或下保护层时首采工作面瓦斯治理这一世界性难题,提供了瓦斯灾害严重的突出矿井实现安全生产的又一有效方法。

Studying outburst prevention and danger prevention in the selection of the protective mine seam, in the preventing borehole drainage and gas-pressure-releasing gas-intercepting borehole drainage in-seam and neighbourhood-seam, in the drainage and mining in the goal, ete, the paper shows that：Hongda Mine realized safety production in stongly-outbursting seam group, solved the world-question of gas prevention and control in first mining face of stongly outbursting seam group when the upper protective seam or lower protective seam did not protect safety, provided another useful method to safety production in the coal mine in which the outburst danger was very serious.