21172工作面基于应力分析的冲击地压研究

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为了明确21172工作面发生冲击危险的可能性,从应力变化方向入手,研究了21172工作面超前支撑应力、围岩应力、围岩活动规律,得出应力变化趋势及峰值影响范围,明确了21172工作面有6处高危险区域,为安全回采提供技术保障.
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