【摘要】 以杨家村煤矿222202工作面开采为背景,采用理论分析计算、FLAC3D数值模拟相结合的方法,对7、11、15、20 m宽度护巷煤柱进行分析,得出15 m煤柱在两侧工作面开挖之后,煤柱中部存在5 m左右弹性区,结合经济效益、安全等因素,确定护巷煤柱的宽度为15 m。更多还原

【Abstract】 Taking Yangjiacun coal mine 222202 working face mining as the background, the coal pillars of 7 m, 11 m, 15 m and 20 m are discussed with the theory analysis and FLAC3 Dnumerical simulation. The results show that the 15 m coal pillar after the excavation of side face, there are about5 m elastic zone in the middle of coal pillar. Combined with economic benefits, safety and other factors,to determine the width of the roadway pillars 15 m.更多还原