厚层复合顶板孤岛工作面小煤柱沿空掘巷围岩控制技术
Mining Safety & Environmental Protection(2015)
Abstract
通过理论分析、数值模拟,研究了孤岛工作面塑性区及垂直应力分布情况,确定出工作面预留煤柱合理宽度为8.0 m,模拟了不同支护方案下巷道围岩塑性区分布情况。结合锚索梁钢带及注浆联合支护方案、矿山压力观测数据,分析了孤岛工作面小煤柱沿空掘巷的矿山压力显现特征,可为后续孤岛工作面沿空掘巷围岩控制提供一定的参考。
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Key words
small pillar roadway driving,rock control technology,isolated working face,roof
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