摘要
以某矿井21103工作面生产地质条件为背景,研究了单侧采空工作面矿震活动规律、冲击地压显现特征以及矿震活动与冲击地压时间域的相关性。结果表明:针对单侧采空工作面,邻空侧巷道冲击显现可划分为邻空侧巷道帮鼓明显,顶底板破坏不明显;顶底板破坏明显,巷道帮鼓不明显;巷道帮鼓、顶底板破坏均明显三类。工作面矿震以低能级矿震为主,能级大于1E4 J矿震较少,断层构造、邻空侧煤柱是矿震主要诱发因素。矿震活动与冲击地压存在高频低能弱冲击危险、低频高能强冲击危险、高频高能强冲击危险三种相关形式。
In order to study the features of seismic activity and coal burst,as well as the correlation between them,the data of seismicity and coal burst in 21103 mining face were collected and analyzed.Based on the five coal burst accidents,the characteristics of bursting damage were summarized,and the features of seismic frequency,energy and its foci were discussed on the base of seismicity data.Lastly,the correlation between coal burst and seismicity summarized.The results show that there are three categories of coal burst that occurred in mining face that adjacent to goaf,first is side roadway break but roof and floor not,second is roof and floor break but side roadway not,third is all of side roadway,roof and floor break.Most of the seismicity occurred in mining face have lower energy,few of seismicity of energy surpass 1E4 J.fault structure,coal pillar adjacent to goaf are the main causes of seismicity.Seismicity with high frequency and low energy indicates low bursting risk,that with low frequency and high energy indicates high bursting risk,and that with high frequency and high energy indicates high bursting risk.
作者
刘华博
段翠芳
孟凡净
花少震
LIU Huabo;DUAN Cuifang;MENG Fanjing;HUA Shaozhen(Henan Institute of Technology,School of Mechanical Engineering,Xinxiang 453003,China)
出处
《河南工学院学报》
CAS
2022年第1期1-5,共5页
Journal of Henan Institute of Technology
基金
河南省高等学校重点科研项目(21A130001,21A110001)
河南省科技攻关项目(212102210432)
河南工学院博士科研启动费资助(KQ1859)。
关键词
单侧采空
矿震活动
冲击地压
相关性
mining face adjacent to goaf
seismicity
coal burst
correlation
