摘要
根据孟村矿胶带运输巷的井下实际情况,运用FLAC3D建立胶带运输巷数值模型,分析了开挖后的应力分布、位移矢量和塑性区情况。结果表明,巷道4个隅角均出现应力集中现象,巷道顶底板的破坏范围远大于帮部的破坏范围,同时巷道的破坏以剪切破坏为主,表现出深部巷道围岩分区破裂的特征。
Based on the actual situation of conveyor tunnel in Mengcun Mine, numerical model of conveyor tunnel was built using FLAC3D software. The stress distribution, displacement vector and plastic zone after the excavation were analysed. This result shows thai, stress-focus phenomenon appears on the four corners of the tunnel,and the destroy range of roof and floor is much larger than that of tunnel side;meanwhile ,shear failure is the main damage factor,exhibits the division failure characteristics of rock mass around deep tunnel.
出处
《中州煤炭》
2015年第9期44-46,共3页
Zhongzhou Coal
关键词
矩形巷道
数值模拟
围岩应力
rectangular tunnel
numerical simulation
surrounding rock stress
