摘要
根据较硬煤层预采顶分层网下放顶煤开采的特点 ,分析了有“拱”结构和无“拱”结构顶煤的放出规律。提出了破坏“拱”平衡 ,增加顶煤放出率的措施和确定放煤步距的原则。
Based on the feature of roof caving mining,the regularity of roof coal drawing under condition of“with arch formation”and“without arch formation”and the way of how to break the arch structure are studied.The paper also points out the measures for increasing coal output and the principle for determining reasonable caving interval.
出处
《中国矿业》
北大核心
2001年第3期45-48,共4页
China Mining Magazine
