【摘要】 通过对汝箕沟煤矿二12 煤层地质条件与煤岩层物理力学性质分析 ,根据我国综放开采技术发展现状 ,认为该煤层采用综放开采是可行的 ,指出采取有效措施防止工作面瓦斯超限和提高煤炭回收率是该矿综放开采成功的关键。更多还原

【Abstract】 The paper analyses the geological conditions and physics mechanics characters about No 2 1 2 seam of Ruqigou coal mine Longwall top coal caving mining technology is considered to be feasible to this seam, according to China’s recent level in this field Author points out that controlling gas in working face and increasing coal recovery ratio are the keys to mining successfully更多还原