基于微震矩張量反演的中國董家河煤礦突水預警方法研究（英文）
發(fā)布時間：2021-12-23 05:15
董家河煤礦屬于中國華北石炭二疊紀煤田,該區(qū)域的巖溶、裂隙發(fā)育程度較高,其水害治理問題一直受到學者們的廣泛關注。本文以董家河煤礦工作面為例,通過工作面布置的微震監(jiān)測系統(tǒng),采用矩張量理論反演了底板微震事件異常區(qū)域的震源機制解,通過應力反演方法識別了底板隱伏斷層,并結(jié)合數(shù)值模擬獲取了底板的應力場。結(jié)果表明:1)通過傳感器拾取的有效微震波形計算了突水危險區(qū)域的矩張量,并在此基礎上將矩張量分解為三部分并結(jié)合相關判據(jù)得出該區(qū)域的主要破裂類型為混合破壞。2)通過震源機制中的初動極性和應力反演方法,確定了斷層的主要屬性,該隱伏斷層屬于逆斷層,其傾角大致為70°,破裂長度為21 m。3)通過數(shù)值模擬方法結(jié)合微震事件的時空分布將斷層的破壞過程分為3個階段。其結(jié)果可為類似煤礦突水風險的預警和評估提供參考。
【文章來源】：Journal of Central South University. 2020,27(10)EISCICSCD
【文章頁數(shù)】：16 頁
【文章目錄】：
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
【參考文獻】：
期刊論文
[1]金屬礦海底開采巖層裂隙的分形演化機理（英文）[J]. 劉志祥,韓科文,楊珊,劉雨曦. Journal of Central South University. 2020(04)
[2]基于微震矩張量的礦山圍巖破壞機制分析[J]. 唐禮忠,翦英驊,李地元,王春,鄧麗凡,陳源. 巖土力學. 2017(05)
[3]Study on “triangle” water-inrush mode of strong water-guide collapse column[J]. 李振華,馮國瑞,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,竇林名,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]. 馬克,唐春安,徐奴文,劉峰,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]. 曹安業(yè),竇林名,駱循,張益東,黃軍利,K.Andrew. Journal of Central South University. 2012(09)
本文編號：3547855
【文章來源】：Journal of Central South University. 2020,27(10)EISCICSCD
【文章頁數(shù)】：16 頁
【文章目錄】：
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
【參考文獻】：
期刊論文
[1]金屬礦海底開采巖層裂隙的分形演化機理（英文）[J]. 劉志祥,韓科文,楊珊,劉雨曦. Journal of Central South University. 2020(04)
[2]基于微震矩張量的礦山圍巖破壞機制分析[J]. 唐禮忠,翦英驊,李地元,王春,鄧麗凡,陳源. 巖土力學. 2017(05)
[3]Study on “triangle” water-inrush mode of strong water-guide collapse column[J]. 李振華,馮國瑞,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,竇林名,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]. 馬克,唐春安,徐奴文,劉峰,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]. 曹安業(yè),竇林名,駱循,張益東,黃軍利,K.Andrew. Journal of Central South University. 2012(09)
本文編號：3547855
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