针对塔山煤矿采高4.5 m、放煤高度10.5 m的特厚煤层,采用相似材料放煤试验和PFC3D软件对一刀一放开采时不同放煤方式(单轮顺序放煤、单轮间隔放煤、多轮间隔放煤、第一轮顺序第二轮间隔)的放煤过程进行了分析,获得特厚煤层大采高放顶煤开采的基本规律及最优的放煤方式,为大采高特厚中硬煤层放顶煤开采实践提供了指导。 Aiming at the thick coal seam with the height of 4.5 m and the coal caving height of 10.5 m in Tashan Coal Mine, the similar material caving test and PFC3D software were used to simulate the coal caving method with one caving and one caving operation (coal caving, coal caving, Multiple rounds of interval coal release, the first round of the second round of the sequence of the) coal caving process was analyzed to obtain the principle of large mining height and top caving coal mining and the optimal caving method for large mining high special Thick and medium hard coal caving mining practice provides guidance.