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大采高支架(结构高度大于3.5m)采面围岩稳定与否是厚煤层一次采全高支架工作状态优劣的关键之一,研究大采高支架采面煤壁片帮规律,并采取相应措施是夺得厚煤层整层开采良好经济效益的保证。
Large mining height bracket (structure height greater than 3.5m) Surrounding rock stability or not is one of the key points of coal mining in high-rise coal seam, Measures are to win the thick seam of the whole mining good economic benefits guarantee.