摘要
徐州矿务集团旗山煤矿13311工作面回采期间,需跨采(纵跨)-850m东西翼轨道联络大巷。通过FLAC分析得出,该巷道受跨采扰动影响后,硐壁的相对位移明显增加,塑性区也明显扩大,巷道顶、底部破坏尤其严重。采用锚杆、锚索与注浆联合加固技术加固后,顶板下沉量控制在25mm以下,两帮移近量120mm以下,底鼓量300mm以下,满足了现场使用要求。
During 13311 mining face mining of Qishan Colliery,Xuzhou Mining Group,crossing-mining above connection roadway at-850m level was inevitable.FLAC simulation results showed that relative displacement and plastic zone of the connection roadway increased obviously,top and bottom of roadway destroyed seriously after crossing-mining.Applying combined supporting technology of anchored bolt,anchored rope and grouting,roof subsidence was controlled below 25mm,convergence of two-side below 120mm and floor heave below 300mm.The supporting projection reached application requirement on the spot.
出处
《煤矿开采》
北大核心
2011年第3期89-91,58,共4页
Coal Mining Technology
基金
山东省"泰山学者"建设工程专项经费资助项目
土木工程防灾减灾山东省重点实验室资助项目
关键词
深部巷道
跨采
FLAC
联合支护
现场测试
deep roadway
crossing mining
FLAC
combined supporting
on-the-spot test
