摘要
断层构造是影响工作面安全生产的重要地质因素,以邢东矿11214工作面SF27断层为工程背景,采用微震监测技术对工作面通过SF27断层进行实时连续监测。监测表明,在贯穿工作面内部的断层SF27,未受到采动时,处于一种相对稳定的状态;在采动效应的作用下,随着断层的不断揭露,断层破坏是逐步且非连续的破坏,是一个应力“集中—释放—集中”的过程,达到一定程度后,发生突变,断层发生整体失稳,位于工作面的中间位置,微震事件的发育规律基本揭示了断层对外界扰动的响应过程。依据微震事件发育规律并结合现生产场情况,划分为Ⅰ、Ⅱ、Ⅲ三个危险区域,断层揭露处Ⅰ、Ⅲ部分应及时进行加固,断层在工作面内的延展区域Ⅱ为最危险的区域,应采取相应技术措施,从而保证工作面的安全回采。研究成果可为工作面过断层构造区域预防顶板动力灾害提供参考借鉴。
Fault structure is an important geological factor affecting the safety of working face.Taking SF27 fault of No.11214 working face in Xingdong Mine as the engineering background,the microseismic monitoring technology was used to carry out real-time and con-tinuous monitoring of working face through SF27 fault.The monitoring shows that the SF27 fault passing through the inner part of the working face is in a relatively stable state when not affected by mining.Under the action of mining effect,with the continuous disclosure of faults,the failure of faults is gradual and non-continuous,which is a process of stress"concentration-release-concentration".The o-verall instability of faults occurs in the middle of the working face,which basically reveals the response process of faults to external dis-turbances.According to the development law of microseismic events and combined with the current production site situation,it is divided into three dangerous areas:Ⅰ,ⅡandⅢ.The exposed parts of the fault,ⅠandⅢ,should be reinforced in a timely manner.The exten-sion areaⅡof the fault in the working face is the most dangerous area,and corresponding technical measures should be taken to ensure the safe mining of the working face.The research results can provide reference and guidance for preventing roof dynamic disasters in the fault structure area of the working face.
作者
王国举
刘钰鑫
赵立松
周泽
赵鹏飞
Wang Guoju;Liu Yuxin;Zhao Lisong;Zhou Ze;Zhao Pengfei(Hebei Coal Science Research Institute Co.,Ltd.,Xingtai 054000,China;Hebei Province Key Laboratory of Mine Microseismic,Xingtai 054000,China;Xingdong Mine,Jizhong Energy Group Co.,Ltd.,Xingtai 054000,China;Institute of Mining Engineering,Guizhou Institute of Technology,Guiyang 550001,China;Jizhong Energy Resources Co.,Ltd.,Xingtai 054001,China)
出处
《能源与环保》
2025年第8期43-48,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
邢台市科技计划项目(2023ZC319)
贵州省科技支撑计划资助项目(黔科合支撑[2021]一般347)
贵州省普通高等学校青年科技人才成长项目(黔教合KY字[2021]258)
贵州理工学院高层次人才科研启动经费项目(XJGC20190931)。
关键词
深部工作面
断层构造
失稳
突变效应
微震事件
deep working face
fault structure
instability
mutation effect
microseismic events
作者简介
王国举(1986-),男,河南林县人,高级工程师,硕士,2014年毕业于湖南科技大学,主要从事微地震、防治水方面的研究工作。;通信作者:刘钰鑫(1986-),男,河北南和人,高级工程师,2011年毕业于河北工程大学,主要从事矿井地质、防治水方面的研究工作。
