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以宁东矿区6.2 m采高工作面开采扰动区内煤岩赋存特征为背景,采用数值模拟和现场监测方法,研究了在破碎围岩环境下,大采高开采扰动区内(主运巷)煤岩应力变化特征。对工作面端头应力以及主运巷煤柱侧应力分布进行了实测分析与总结。
Taking the occurrence characteristics of coal and rock in the disturbed area of 6.2 m high working face in Ningdong mining area as the background, numerical simulation and on-site monitoring method were used to study the characteristics of coal mining in the surrounding rock with large mining height Coal and rock stress characteristics. The stress at the tip of the work face and the stress distribution at the side of coal pillar are analyzed and summarized.