寺家庄矿15106孤岛工作面沿空掘巷支护技术
Energy Technology and Management(2017)
Abstract
阳煤寺家庄矿15106孤岛工作面回风巷采用留设小煤柱沿空掘巷,在掘进期间巷道变形严重,两帮移近量约为顶板下沉量的2.5倍,实体煤帮移近量约为煤柱帮移近量的1.4倍.通过分析15106工作面回风巷变形的原因,对原有支护参数进行优化,结合现场实际提出新的支护技术并在井下试验.矿压观测表明,优化后的支护参数有效地减小了围岩变形,提高了巷道围岩强度,保证了矿井安全生产.
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