摘要
为确保掘进工作面顺利通过F3断层,针对F3断层存在围岩破碎、应力集中问题,通过数值模拟得出断层影响范围为断层两侧30 m,掘进扰动下最大应力达到30.2 MPa。为确保安全过断层,制定后退挑顶法过断层方案及锚网支护+锚索补强+注浆加固支护方案,巷道最大变形量97 mm,支护方案满足断层区域支护要求。
In order to ensure the smooth passage of the driving working face through fault F3,aiming at the problems of broken surrounding rock and stress concentration in fault F3,the influence range of the fault is 30 m on both sides of the fault,and the maximum stress under driving disturbance is up to 30.2 MPa.In order to ensure safe passage through the fault,the scheme of crossing fault by back overhanging method and the scheme of anchor mesh support + anchor cable reinforcement + grouting reinforcement support are worked out,and the maximum deformation of roadway is 97 mm.The support scheme meets the requirements of fault area support.
作者
王爱军
Wang Aijun(Shanxi Yangcheng Yangtai Group Baigou Coal Industry Co.,Ltd.,Shanxi Yangcheng 048100)
出处
《山东煤炭科技》
2022年第3期32-34,37,共4页
Shandong Coal Science and Technology
关键词
掘进
断层
工艺
加固
支护
driving
fault
technology
reinforcement
support
