Analyses factors that affect cover caving ability of roof coal in sublevel caving mining method.
分析了放顶煤开采顶煤冒放性的影响因素。
The paper discusses the roof coal breakage principle, deformation breakage and retrieval law and analyzes factors affecting cover caving ability.
论述了综放开采的顶煤破碎机理、变形破碎及回收规律；
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