羊场湾煤矿大断面巷道支护参数分析与选择
Journal of Xi'an University of Science and Technology(2010)
Abstract
大断面巷道受赋存环境、开采扰动及人工支护的耦合影响,其稳定与否直接决定矿井的安全生产。以破碎围岩环境下羊场湾矿大断面巷道为背景,采用理论分析、FLAC3D数值模拟和锚杆测力计、压力表等现场监测方法,综合分析了锚杆受力和巷道变形情况,并定量确定了巷道的支护参数。实践表明:顶板和两帮锚杆(索)采用850mm×850mm,850mm×900mm的支护能够满足矿井安全开采的需要。
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Key words
support parameter,large section,broken rock environment
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