摘要
采用FLAC^(3D)数值模拟的方法,研究某矿2-216工作面掘进通过断层期间应力分布特征,并提出相关的解压减危措施。结果表明,当掘进工作面迎头至断层40 m时,断层附近开始形成应力集中现象,并随着距离断层越近,应力集中现象越明显。针对此结果,基于钻孔预卸压的方法提出应对方案,取得了良好的卸压防冲效果。
The FLAC^(3D) numerical simulation method was used to study the stress distribution charac⁃teristics of the 2-216 working face of a mine during the tunneling through the fault,and put forward rele⁃vant decompression and risk reduction measures were put forward.The results show that when the working face reaches 40 m from the fault,the stress concentration phenomenon begins to form near the fault,and the closer the distance to the fault,the more obvious the stress concentration phenomenon.In response to this result,a countermeasure was proposed based on the method of pre-relief drilling,which achieved good pressure relief and anti-shock effect.
作者
杨阳
郭雷
张恒
李奥博
黄一祖
张继涛
YANG Yang;GUO Lei;ZHANG Heng;LI Aobo;HUANG Yizu;ZHANG Jitao(Shandong Tangkou Coal Industry Co.,Ltd.;Civil Engineering College,Nanyang Institute of Technology)
出处
《现代矿业》
CAS
2022年第10期136-138,共3页
Modern Mining
关键词
冲击地压
应力演化
数值模拟
卸压防冲
impact ground pressure
stress evolution
numerical simulation
pressure relief and antishock
