厚煤层综放工作面顶煤冒放性及回收率分析

摘要

The lower recovery ratio of top-coal in fully mechanized caving face is a main problem , and improving the recov-ery ratio of top-coal has great significance to the high production and high efficiency of fully mechanized caving mining . Based on actual practice of №401102 fully mechanized caving face in Hujiahe Mine , the crushing mechanism and cavability of top-coal was researched , and the influence of different way of moving supports to the recovery ratio of top -coal is analyzed too.%顶煤回收率偏低一直是困扰综放开采的一个核心问题，提高综放工作面顶煤回收率对实现综放开采高产高效具有重大意义。本文结合胡家河煤矿401102综放工作面的实际情况，对顶煤破碎机理和冒放性进行了研究，并分析了不同移架方式对顶煤回收率的影响。