基于微震矩张量反演的中国董家河煤矿突水预警方法研究（英文）
发布时间：2021-12-23 05:15
董家河煤矿属于中国华北石炭二叠纪煤田,该区域的岩溶、裂隙发育程度较高,其水害治理问题一直受到学者们的广泛关注。本文以董家河煤矿工作面为例,通过工作面布置的微震监测系统,采用矩张量理论反演了底板微震事件异常区域的震源机制解,通过应力反演方法识别了底板隐伏断层,并结合数值模拟获取了底板的应力场。结果表明:1)通过传感器拾取的有效微震波形计算了突水危险区域的矩张量,并在此基础上将矩张量分解为三部分并结合相关判据得出该区域的主要破裂类型为混合破坏。2)通过震源机制中的初动极性和应力反演方法,确定了断层的主要属性,该隐伏断层属于逆断层,其倾角大致为70°,破裂长度为21 m。3)通过数值模拟方法结合微震事件的时空分布将断层的破坏过程分为3个阶段。其结果可为类似煤矿突水风险的预警和评估提供参考。
【文章来源】：Journal of Central South University. 2020,27(10)EISCICSCD
【文章页数】：16 页
【文章目录】：
1 Introduction
2 Moment tensor and focal mechanism inversion method
2.1 Theory and calculation method of moment tensor
2.2 Criterion of fracture type and its correspondingfracturesurface characteristics
3 Engineering background
3.1 Project overview
3.2 Site layout of microseismic monitoring system
4 Moment tensor inversion and analysis
4.1 Moment tensor calculation process
4.2 Inversion results of moment tensor
5 Numerical simulation
5.1 Advantages of realistic failure process analysis (RFPA)
5.2 Model building
5.3 Law of fault failure
5.4 Analysis of fault stress evolution
6 Analysis of water inflow and geological data at working face
7 Conclusions
Appendix A:Linear stress inversion method
Contributors
Conflict of interest
【参考文献】：
期刊论文
[1]金属矿海底开采岩层裂隙的分形演化机理（英文）[J]. 刘志祥,韩科文,杨珊,刘雨曦. Journal of Central South University. 2020(04)
[2]基于微震矩张量的矿山围岩破坏机制分析[J]. 唐礼忠,翦英骅,李地元,王春,邓丽凡,陈源. 岩土力学. 2017(05)
[3]Study on “triangle” water-inrush mode of strong water-guide collapse column[J]. 李振华,冯国瑞,翟常治. Journal of Central South University. 2016(09)
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[6]Seismic effort of blasting wave transmitted in coal-rock mass associated with mining operation[J]. 曹安业,窦林名,骆循,张益东,黄军利,K.Andrew. Journal of Central South University. 2012(09)
本文编号：3547855
【文章来源】：Journal of Central South University. 2020,27(10)EISCICSCD
【文章页数】：16 页
【文章目录】：
1 Introduction
2 Moment tensor and focal mechanism inversion method
2.1 Theory and calculation method of moment tensor
2.2 Criterion of fracture type and its correspondingfracturesurface characteristics
3 Engineering background
3.1 Project overview
3.2 Site layout of microseismic monitoring system
4 Moment tensor inversion and analysis
4.1 Moment tensor calculation process
4.2 Inversion results of moment tensor
5 Numerical simulation
5.1 Advantages of realistic failure process analysis (RFPA)
5.2 Model building
5.3 Law of fault failure
5.4 Analysis of fault stress evolution
6 Analysis of water inflow and geological data at working face
7 Conclusions
Appendix A:Linear stress inversion method
Contributors
Conflict of interest
【参考文献】：
期刊论文
[1]金属矿海底开采岩层裂隙的分形演化机理（英文）[J]. 刘志祥,韩科文,杨珊,刘雨曦. Journal of Central South University. 2020(04)
[2]基于微震矩张量的矿山围岩破坏机制分析[J]. 唐礼忠,翦英骅,李地元,王春,邓丽凡,陈源. 岩土力学. 2017(05)
[3]Study on “triangle” water-inrush mode of strong water-guide collapse column[J]. 李振华,冯国瑞,翟常治. Journal of Central South University. 2016(09)
[4]Risk evaluation of rock burst through theory of static and dynamic stresses superposition[J]. 李振雷,窦林名,王桂峰,蔡武,何江,丁言露. Journal of Central South University. 2015(02)
[5]Failure precursor of surrounding rock mass around cross tunnel in high-steep rock slope[J]. 马克,唐春安,徐奴文,刘峰,徐敬武. Journal of Central South University. 2013(01)
[6]Seismic effort of blasting wave transmitted in coal-rock mass associated with mining operation[J]. 曹安业,窦林名,骆循,张益东,黄军利,K.Andrew. Journal of Central South University. 2012(09)
本文编号：3547855
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