摘要
以钱家营煤矿5~#煤层在-850 m掘进运输大巷时会穿过AF41、AF42逆断层为例,采用FLAC3D数值模拟软件建立大巷掘进过断层的模型,分析了掘进巷道时的应力变化情况,得出在该地质条件下,应力集中范围为30 m,同时,在掘进过程中断层下盘在采动影响下的应力集中现象最严重。
NO.5 coal seam of Qianjiaying coal mine will pass through the AF41 and AF42 reverse faults in the -850 m tunnel. The FLAC3D numerical simulation software is used to establish the model of the roadway crossing fault, and the stress variation of tunneling roadway is analyzed. The stress is focused 30 m under the geological conditions. Meanwhile, the stress concentration under the disturbed zone is the most serious during driving.
出处
《山西焦煤科技》
2018年第11期15-18,共4页
Shanxi Coking Coal Science & Technology
关键词
逆断层
掘进巷道
应力集中
Reverse fault
Excavation roadway
Stress concentration
