岩爆孕育发生过程中的微震活动规律研究
|
摘要
为提高采用微震监测技术预报岩爆的准确率,基于最小耗能原理,通过理论分析,花岗岩室内试验和数值分析等方法,揭示了岩爆的孕育发生机理,提出了岩爆发生的准则,建立了岩爆的孕育发生过程的本构方程,探讨了由声发射频次确定的损伤演化曲线与岩爆的损伤演化曲线之间的关系,揭示了应力、能量积累转移与微震活动空间分布规律之间的内在联系.研究结果表明:岩爆的孕育过程是以损伤耗散为主的储能过程,发生过程是以塑性耗散和弹性能释放为主的能量释放过程;同时满足裂纹扩展完成准则和极限储能准则时发生岩爆;由声发射频次确定的损伤演化曲线与岩爆的损伤演化曲线有很好的一致性;通过监测微震活动空间分布规律可揭示岩爆孕育发生过程中应力和能量分布情况,为建立岩爆预报模型提供依据.
Based on the least energy consumption principle,the method of laboratory test for granite,theoretical and numerical analysis are adopted to improve the accuracy of predicting rockburst induced by microseism.The mechanism of the development of rockburst is revealed and the criterion of rockburst occurrence is proposed.The constitutive equations of the process of rockburst development are established.The relationship between damage evolution curve determined by frequency of acoustic emission(AE) and damage evolution curve of rockburst is studied.The relationships among accumulation and transition of stress,accumulation and transition of energy and distribution of AE activity are analyzed.The result shows that the nature of rockburst development is the progress of energy storage in the form of damage dissipation.The nature of rockburst development is the progress of energy release in the form of plastic energy dissipation and elastic energy release.When both the criterion of crack accomplishment and the criterion of limit energy storage are met,the rockburst occurs.The damage evolution curve determined by frequency of AE is consistent with that of rockburst.According to the monitor results of microseism,the distributions of stress and energy in rockburst development is obtained.The study provides a theoretical basis for rockburst prediction.
Based on the least energy consumption principle,the method of laboratory test for granite,theoretical and numerical analysis are adopted to improve the accuracy of predicting rockburst induced by microseism.The mechanism of the development of rockburst is revealed and the criterion of rockburst occurrence is proposed.The constitutive equations of the process of rockburst development are established.The relationship between damage evolution curve determined by frequency of acoustic emission(AE) and damage evolution curve of rockburst is studied.The relationships among accumulation and transition of stress,accumulation and transition of energy and distribution of AE activity are analyzed.The result shows that the nature of rockburst development is the progress of energy storage in the form of damage dissipation.The nature of rockburst development is the progress of energy release in the form of plastic energy dissipation and elastic energy release.When both the criterion of crack accomplishment and the criterion of limit energy storage are met,the rockburst occurs.The damage evolution curve determined by frequency of AE is consistent with that of rockburst.According to the monitor results of microseism,the distributions of stress and energy in rockburst development is obtained.The study provides a theoretical basis for rockburst prediction.
引文
[1]UNANDER T E.The effect of attenuation on B-val-ues in acoustic emission measurements:Atheoreticalinvestigation[J].International Journal of Rock Me-chanics and Mine Sciences,1994,31(1):947-950.
[2]CALDER P N,MADSEN D.Highfrequency precur-sor analysis prior to a rockburst[J].Rockburst andSei micity in Mines,1990(1):117-131.
[3]李庶林,伊贤刚,郑文达,等.凡口铅锌矿多通道微震监测系统及其应用研究[J].岩石力学与工程学报,2005,24(12):2048-2053.LI Shu-lin,YIN Xian-gang,ZHENG Wen-da,et al.Research of multi-channel microseismic monitoringsystem and its application to fankou lead-zinc mine[J].Chinese Journal of Rock Mechanics and Engi-neering,2005,24(12):2048-2053.
[4]李庶林,尹贤刚,李爱兵.多通道微震监测技术在大爆破余震监测中的应用[J].岩石力学与工程学报,2005,24(增):4711-4714.LI Shu-lin,YIN Xian-gang,LI Ai-bing.Applicationfor monitoringlarge blast after shocks by multi-chan-nel microseismic monitoring technology[J].ChineseJournal of Rock Mechanics and Engineering,2005,24(Supp):4711-4714.
[5]鲁振华,张连成.门头沟矿微震的近场监测效能评估[J].地震,1989,10(5):32-39.LU Zhen-hua,ZHANG Lian-cheng.Evaluation ofnear-field monitoring efficiency of tremors in Mento-ugou mine[J].Earthquake,1989,10(5):32-39.
[6]叶根喜,姜福兴.煤矿深部采场爆破地震波传播规律的微震原位试验研究[J].岩石力学与工程学报,2008,27(5):1053-1058.YE Gen-xi,JIANG Fu-xing.Experi mental researchon seismic wave attenuation byfield microseismic mo-nitoring in a deep coal mine[J].Chinese Journal ofRock Mechanics and Engineering,2008,27(5):1053-1058.
[7]成云海,姜福兴.微震监测揭示的C型采场空间结构及应力场[J].岩石力学与工程学报.2007,26(1):102-107.CHENG Yun-hai,JIANG Fu-xing.C-shaped strataspatial structure and stress field in longwall face mo-nitored by microseismic monitoring[J].Chinese Jour-nal of Rock Mechanics and Engineering,2007,26(1):102-107.
[8]姜福兴,XUN Luo.采场覆岩空间破裂与采动应力场的微震探测研究[J].岩土工程学报,2003,25(1):23-25.JIANG Fu-xing,XUN Luo.Study on microseismicmonitoring for spatial structure of overlying strataand mining pressure field in longwall face[J].Chi-nese Journal of Geotechnical Engineering,2003,25(1):23-25.
[9]杨天鸿,唐春安.岩体破坏突水模型研究现状及突水预测预报研究发展趋势[J].岩石力学与工程学报,2007,26(2):268-277.YANG Tian-hong,TANG Chun-an.State of the artof water inrush models in rock mass failure and devel-oping trendfor prediction andforecast of groundwaterinrush[J].Chinese Journal of Rock Mechanics andEngineering,2007,26(2):268-277.
[10]刘超,唐春安.基于背景应力场与微震活动性的注浆帷幕突水危险性评价[J].岩石力学与工程学报,2009,28(2):366-372.LI U Chao,TANG Chun-an.Analysis of probabilityof water inrush from grout curtain based on back-ground stress field and microseismicity[J].ChineseJournal of Rock Mechanics and Engineering,2009,28(2):366-372.
[11]唐礼忠,潘长良,杨承祥,等.冬瓜山铜矿微震监测系统建立及应用研究[J].采矿技术,2006,6(3):272-277.TANG Li-zhong,PAN Chang-liang,YANG Cheng-xiang,et al.Research on microseismic monitoringsystem and its application to Dongguashan coppermine[J].Mining Technology,2006,6(3):272-277.
[12]谢和平,鞠杨,黎立云.基于能量耗散与释放原理的岩石强度与整体破坏准则[J].岩石力学与工程学报,2005,24(17):3003-3010.XIE He-ping,JU Yang,LI Li-yun.Criteria forstrength and structural failure of rocks based on en-ergy dissipation and energy release principles[J].Chinese Journal of Rock Mechanics and Engineer-ing,2005,24(17):3003-3010.
[13]STEWART R A,REI MOLD W U.The nature of adeformation zone and fault rock related to a recentrockburst at Western Deep Levels Gold Mine,Wit-watersrand Basin,South Africa[J].Tectonophys-ics,2001,337:173-193.
[14]郑宏,葛修润.脆塑性岩体的分析原理及其应用[J].岩石力学与工程学报,1997,16(1):8-21.ZHENG Hong,GE Xiu-run.Analysis principle forrock mass with brittle-plasticity and its applications[J].Chinese Journal of Rock Mechanics and Engi-neering,1997,16(1):8-21.
[2]CALDER P N,MADSEN D.Highfrequency precur-sor analysis prior to a rockburst[J].Rockburst andSei micity in Mines,1990(1):117-131.
[3]李庶林,伊贤刚,郑文达,等.凡口铅锌矿多通道微震监测系统及其应用研究[J].岩石力学与工程学报,2005,24(12):2048-2053.LI Shu-lin,YIN Xian-gang,ZHENG Wen-da,et al.Research of multi-channel microseismic monitoringsystem and its application to fankou lead-zinc mine[J].Chinese Journal of Rock Mechanics and Engi-neering,2005,24(12):2048-2053.
[4]李庶林,尹贤刚,李爱兵.多通道微震监测技术在大爆破余震监测中的应用[J].岩石力学与工程学报,2005,24(增):4711-4714.LI Shu-lin,YIN Xian-gang,LI Ai-bing.Applicationfor monitoringlarge blast after shocks by multi-chan-nel microseismic monitoring technology[J].ChineseJournal of Rock Mechanics and Engineering,2005,24(Supp):4711-4714.
[5]鲁振华,张连成.门头沟矿微震的近场监测效能评估[J].地震,1989,10(5):32-39.LU Zhen-hua,ZHANG Lian-cheng.Evaluation ofnear-field monitoring efficiency of tremors in Mento-ugou mine[J].Earthquake,1989,10(5):32-39.
[6]叶根喜,姜福兴.煤矿深部采场爆破地震波传播规律的微震原位试验研究[J].岩石力学与工程学报,2008,27(5):1053-1058.YE Gen-xi,JIANG Fu-xing.Experi mental researchon seismic wave attenuation byfield microseismic mo-nitoring in a deep coal mine[J].Chinese Journal ofRock Mechanics and Engineering,2008,27(5):1053-1058.
[7]成云海,姜福兴.微震监测揭示的C型采场空间结构及应力场[J].岩石力学与工程学报.2007,26(1):102-107.CHENG Yun-hai,JIANG Fu-xing.C-shaped strataspatial structure and stress field in longwall face mo-nitored by microseismic monitoring[J].Chinese Jour-nal of Rock Mechanics and Engineering,2007,26(1):102-107.
[8]姜福兴,XUN Luo.采场覆岩空间破裂与采动应力场的微震探测研究[J].岩土工程学报,2003,25(1):23-25.JIANG Fu-xing,XUN Luo.Study on microseismicmonitoring for spatial structure of overlying strataand mining pressure field in longwall face[J].Chi-nese Journal of Geotechnical Engineering,2003,25(1):23-25.
[9]杨天鸿,唐春安.岩体破坏突水模型研究现状及突水预测预报研究发展趋势[J].岩石力学与工程学报,2007,26(2):268-277.YANG Tian-hong,TANG Chun-an.State of the artof water inrush models in rock mass failure and devel-oping trendfor prediction andforecast of groundwaterinrush[J].Chinese Journal of Rock Mechanics andEngineering,2007,26(2):268-277.
[10]刘超,唐春安.基于背景应力场与微震活动性的注浆帷幕突水危险性评价[J].岩石力学与工程学报,2009,28(2):366-372.LI U Chao,TANG Chun-an.Analysis of probabilityof water inrush from grout curtain based on back-ground stress field and microseismicity[J].ChineseJournal of Rock Mechanics and Engineering,2009,28(2):366-372.
[11]唐礼忠,潘长良,杨承祥,等.冬瓜山铜矿微震监测系统建立及应用研究[J].采矿技术,2006,6(3):272-277.TANG Li-zhong,PAN Chang-liang,YANG Cheng-xiang,et al.Research on microseismic monitoringsystem and its application to Dongguashan coppermine[J].Mining Technology,2006,6(3):272-277.
[12]谢和平,鞠杨,黎立云.基于能量耗散与释放原理的岩石强度与整体破坏准则[J].岩石力学与工程学报,2005,24(17):3003-3010.XIE He-ping,JU Yang,LI Li-yun.Criteria forstrength and structural failure of rocks based on en-ergy dissipation and energy release principles[J].Chinese Journal of Rock Mechanics and Engineer-ing,2005,24(17):3003-3010.
[13]STEWART R A,REI MOLD W U.The nature of adeformation zone and fault rock related to a recentrockburst at Western Deep Levels Gold Mine,Wit-watersrand Basin,South Africa[J].Tectonophys-ics,2001,337:173-193.
[14]郑宏,葛修润.脆塑性岩体的分析原理及其应用[J].岩石力学与工程学报,1997,16(1):8-21.ZHENG Hong,GE Xiu-run.Analysis principle forrock mass with brittle-plasticity and its applications[J].Chinese Journal of Rock Mechanics and Engi-neering,1997,16(1):8-21.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心