摘要
针对7121大倾角综采工作面沿空掘巷窄煤柱合理宽度难以确定的问题,采用FLAC3D数值模拟了掘巷前上区段采空区煤体边缘应力分布及掘巷后巷道围岩应力与变形破坏特征。模拟结果表明:掘巷前煤体边缘垂直应力出现先迅速增长后缓慢降低的趋势,峰值区间为9~10 m。
Aiming at the problem of reasonable narrow coal pillar width of driving roadway along goaf of7121 deep steep fully-mechanized working face, studied the stress distribution of the coal edge before driving roadway and deformation characteristics of roadway surrounding rock after driving roadway by using numerical simulation of FLAC3 D. The simulation of results showed: the vertical stress of coal edge rendering the trend with rapidly growing and then decreased slowly, maximum range of 9~10 m.
出处
《煤炭技术》
CAS
北大核心
2015年第4期47-50,共4页
Coal Technology
基金
泰山学者建设工程专项经费资助项目(20131019)
关键词
深部大倾角
沿空掘巷
煤柱宽度
数值模拟
deep steep
driving roadway along goaf
pillar width
numerical simulation
