平煤十一矿艾山逆断层瓦斯异常区范围划定研究

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以平煤十一矿中型艾山逆断层为例,研究断层周围的应力场分布、伴生构造的发育程度、瓦斯异常分布等,确定断层带瓦斯异常区的范围,为防治瓦斯措施提供基础数据。结果表明:艾山逆断层上盘是主动盘,受到的剪切作用强,煤体的破碎程度、瓦斯富集程度都优于下盘;断层尖灭端受相邻断层扰动影响形成应力异常集中区,尖灭端60 m内为瓦斯异常区,大于断层其他部位控制区,断层带瓦斯异常区范围的划定提高了采区工作面防突预测效率。
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