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为了防止煤柱冲击矿压的现象,提高回采率,采用力学计算得出了合理的小煤柱宽度,并通过数值模拟,分析了沿空掘巷上区段工作面煤体内应力变化,以及小煤柱煤巷变形破坏规律,最终确定出合理的小煤柱宽度并应用于工程实践。
In order to prevent the phenomenon of coal pillar rock pressure and improve the recovery rate, the reasonable width of coal pillar was obtained by mechanics calculation. Through the numerical simulation, the change of stress in the coal face of the driving face along gob-side entry was analyzed, Coal pillar coal deformation and failure of the law, and ultimately determine a reasonable width of small coal pillar and applied to engineering practice.