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许疃煤矿采区上山保护煤柱留设尺寸研究

Coal Technology(2016)

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Abstract
以淮北矿业集团许疃煤矿为例,为确定采区上山保护煤柱合理的宽度,利用FLAC3D5.0软件对回采引起的上山巷道支承压力变化、上山巷道变形等进行了数值模拟研究,分析了上山巷道受采动影响情况,最终确定了82采区回风上山巷道的保护煤柱宽度应为60~65 m,并且取得了良好的工程实践效果.
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