【摘要】 端面顶板是高档普采工作面顶板管理的重点。分析了п型钢梁支护法的不足 ,提出了一种新的支护方法 ,通过应用取得了良好效果更多还原

【Abstract】 The roof of head face is the key point of the face roof management in the high-grade conventional machine mining. The deficiencies of п type steel beam supporting method are analysed and a kind of new supporting method is put forward and good results are achieved.更多还原