坚硬煤层综放开采提高顶煤回收率途径

The way of enhancing coal recovery for sub-level caving mining in hard coal seam-

文章着重阐述坚硬煤层综放开采提高顶煤冒放性研究与试验工作,叙述了采取破裂弱化顶煤技术、架型改造和加强回采率的管理,从而保证顶煤回收率,促进稳产高产。

——The research and experiment of increasing top coal caving in the caving min- ing face are described.By taking some measures such as fracturing and softening top coal,improving supports,and strengthening managemant the coal recovery is increased and stable production of the face is guaranteed.