摘要
通过对林南仓矿-650 m水平轨道石门变形破坏机理的研究,发现巷道变形破坏主要是由于围岩岩性弱化,使支护区域发生结构性失稳,巷道变形严重。基于此,设计出了壁后充填的巷道支护方式,通过FLAC3D模拟计算,该支护方式能很好地控制帮顶破碎区,将巷道围岩的应力场和位移场趋于均匀化,控制了围岩的破碎大变形。
Through the deformation failure mechanism study of the - 650 m level track cross - cut in Linnancang Coal Mine, the road- way deformation and failure of surrounding rock is mainly due to the composition of clay minerals, the structural instability in supporting region. On this basis, the study designs a backfilling support way. Through the FLAC3D simulation calculation, the supporting method can well control the broken zone of roadway surrounding rock, the stress field and displacement field tends to equalization, and can well control large deformation of the broken surrounding rock.
出处
《煤矿安全》
CAS
北大核心
2014年第2期123-126,共4页
Safety in Coal Mines
关键词
软岩巷道
变形机理
壁后充填
数值模拟
巷道支护
巷道变形破坏
结构性失稳
soft rock roadway
deformation mechanism
backfilling
numerical simulation
roadway support
roadway deformation andfailure
structural instability
