逆断层活化诱发冲击地压的危险性研究  

Research on Risk of Rock Burst Induced by Reverse Fault Activation

作　　者：许磊[1] 魏世明[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454003

出　　处：《煤炭技术》2015年第1期98-101,共4页Coal Technology

摘　　要：采用FLAC3.03D数值模拟软件,以接触面单元模拟断层上下盘构造关系,模拟在逆断层地质构造下,工作面从断层下盘向断层面推进过程中,矿山压力分布规律以及断层带位移变化规律。结果表明,在逆断层地质构造下,工作面从下盘向断层推进过程中,距断层面距离不断减小,断层滑移量随工作面的推进逐渐增大;逆断层面上应力变化受采动影响活化范围在断层面前方40 m处,剪切应力与法向应力随工作面的推进逐渐增大,剪切应力变化高于法向应力,诱发冲击危险性增大。Using numerical simulation software FLAC3. 03 D,the contact surface element is used to simulate the fault footwall structure,the effect of mine pressure distribution and fault displacement variation during the coal mining operation from the footwall to the fault plane. The results show that in reverse fault structure the displacement gradually increasing during the advance of from the fault plane distance decrease;fault stress changes affected by coal mining on the surface of activated scope is 40 m in front of the fault,shear stress and normal stress with the increase of working face advancing gradually increasing,the normal stress and shear stress changes above increases induced rockburst risk.

关 键 词：逆断层 数值模拟 冲击地压 

分 类 号：TD324[矿业工程—矿井建设]