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分析了典型综放工作面顶煤、直接顶垮落特点与顶煤体放出之间的关系，认为顶煤、直接顶垮落特征对工作面回收率有重要影响。
The relationship between top coal caving characteristics and top coal caving characteristics of top coal in a typical fully mechanized top coal caving face is analyzed. It is concluded that the characteristics of top coal caving and direct roof caving have a significant impact on the recovery of working face.