大断面破碎围岩巷道保护煤柱稳定性分析与评价
Coal Engineering(2010)
Abstract
以羊场湾煤矿开采以来煤柱留设经验和理论计算为基础,通过锚杆受力监测分析、相似模拟实验、煤岩结构的钻孔窥视和松动圈测试,对110206工作面大断面巷道煤柱的稳定性进行分析,并最终判定煤柱宽度为35m是合理的,能够满足安全开采的需要,同时定量确定了工作面超前影响范围,提出了支护建议。
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Key words
broken surrounding rock,coal pillar stability,large cross section
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