应变型岩爆过程的声发射特征研究
|
摘要
采用真三轴岩爆试验系统开展岩石力学试验,在室内再现了花岗岩的应变型岩爆破坏、板裂破坏、真三轴剪切破坏三种破坏过程。研究表明,与板裂破坏、真三轴剪切破坏不同,在整体破坏前夕,岩爆破坏存在明显的声发射撞击数相对"平静期";三种破坏的声发射撞击数分形维数Dt都存在整体破坏前夕持续下降到极小值点而破坏瞬间突增的现象,但岩爆破坏在整体破坏前夕的Dt持续降低速率和整体破坏瞬间Dt增幅上都比板裂破坏的大;三种破坏过程的声发射信号的主频值呈"低频-高频-低频"的总体演化趋势,频谱形状经历"单峰-多峰-单峰"的交替变化过程,但在岩样破坏的塑性阶段,三种破坏在主频分布及信号幅值上有明显差异。
Rock mechanics experiments were carried out using true triaxial rock burst experimental system.Three failure processes including strainburst,splitting and true triaxial shear failure of granite have been reproduced indoors.Experimental results show that on the eve of the whole failure,there is a distinct relative "quiet period"of acoustic emission hits for strainburst failure,which is different from the splitting failure and the true triaxial shear failure.For three kinds of failure,the fractal dimension Dtof acoustic emission hits presents same phenomenon that it continually drops to the minimum point before whole failure and increases suddenly when failure occurs.However,for strainburst,the continuous reduction rate of Dton the eve of whole failure and the increase of Dtin the instant of whole failure are larger than that of splitting.The main frequency values of the acoustic emission signals in the three kinds of destructive processes show a general evolutionary trend of low frequency-high frequency-low frequency.The spectrum shape experiences the alternating process of"single peak-multi peak-single peak".But in the plastic stage of rock sample failure,the main frequency distribution and signal amplitude of the three kinds of failure are obviously different.
Rock mechanics experiments were carried out using true triaxial rock burst experimental system.Three failure processes including strainburst,splitting and true triaxial shear failure of granite have been reproduced indoors.Experimental results show that on the eve of the whole failure,there is a distinct relative "quiet period"of acoustic emission hits for strainburst failure,which is different from the splitting failure and the true triaxial shear failure.For three kinds of failure,the fractal dimension Dtof acoustic emission hits presents same phenomenon that it continually drops to the minimum point before whole failure and increases suddenly when failure occurs.However,for strainburst,the continuous reduction rate of Dton the eve of whole failure and the increase of Dtin the instant of whole failure are larger than that of splitting.The main frequency values of the acoustic emission signals in the three kinds of destructive processes show a general evolutionary trend of low frequency-high frequency-low frequency.The spectrum shape experiences the alternating process of"single peak-multi peak-single peak".But in the plastic stage of rock sample failure,the main frequency distribution and signal amplitude of the three kinds of failure are obviously different.
引文
[1]侯哲生,龚秋明,孙卓恒.锦屏二级水电站深埋完整大理岩基本破坏方式及其发生机制[J].岩石力学与工程学报,2011,30(4):727-732(HOU Zhesheng,GONG Qiuming,SUN Zhuoheng.Primary failure types and their failure mechanisms of deep buried and intact marble at Jinping II hydropower station[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(4):727-732(in Chinese))
[2]徐林生,王兰生,李天斌.国内外岩爆研究现状综述[J].长江科学院院报,1999,16(4):24-27(XU Linsheng,WANG Lansheng,LI Tianbin.Present situation of rockburst research at home and abroad[J].Journal of Yangtze River Scientific Research Institute,1999,16(4):24-27(in Chinese))
[3]姜繁智,向晓东,朱东升.国内外岩爆预测的研究现状与发展趋势[J].工业安全与环保,2003,29(8):19-22(JIANG Fanzhi,XIANG Xiaodong,ZHU Dongsheng.The current status and developing tendency of rock blasting forecast at home and abroad[J].Industrial Safety and Environmental Protection,2003,29(8):19-22(in Chinese))
[4]李庶林,尹贤刚,王泳嘉,等.单轴受压岩石破坏全过程声发射特征研究[J].岩石力学与工程学报,2004,23(15):2499-2503(LI Shulin,YIN Xiangang,WANG Yongjia,et al.Study on acoustic emission characteristics of uniaxial compressive rock failure[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(15):2499-2503(in Chinese))
[5]尹贤刚,李庶林,唐海燕.岩石破坏声发射平静期及其分形特征研究[J].岩石力学与工程学报,2009,28(S2):3383-3390(YIN Xiangang,LI Shulin,TANG Haiyan.Study of quiet period and its fractal characteristics of rock failure acoustic emission[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(S2):3383-3390(in Chinese))
[6]万国香,王其胜,李夕兵.应力波作用下岩石声发射能量特征[J].实验力学,2012,27(6):727-733(WAN Guoxiang,WANG Qisheng,LI Xibing.On the acoustic emission energy characteristics of rock subjected to stress waves[J].Journal of Experimental Mechanics,2012,27(6):727-733(in Chinese))
[7]张艳博,梁鹏,刘祥鑫,等.基于声发射信号主频和熵值的岩石破裂前兆试验研究[J].岩石力学与工程学报,2015(S1):2959-2967(ZHANG Yanbo,LIANG Peng,LIU Xiangxin,et al.Experimental study on precursor of rock burst based on acoustic emission signal dominant-frequency and entropy[J].Chinese Journal of Rock Mechanics and Engineering,2015(S1):2959-2967(in Chinese))
[8]王晓军,肖伟晶,陈辰.基于声发射参量的不同深度灰岩塑性破坏识别研究[J].实验力学,2017,32(1):107-112(WANG Xiaojun,XIAO Weijing,CHEN Chen.On the plastic damage identification of limestone from different depths based on acoustic emission parameters[J].Journal of Experimental Mechanics,2017,32(1):107-112(in Chinese))
[9] Cai M,Morioka H,Kaiser P K.Back-analysis of rock mass strength parameters using AE monitoring data[J].International Journal of Rock Mechanics&Mining Sciences,2007,44(4):538-549.
[10]陈景涛.岩石变形特征和声发射特征的三轴试验研究[J].武汉理工大学学报,2008,30(2):94-96,118(CHEN Jingtao.Experimental study on triaxial compression deformation and acoustic emission property of rock[J].Journal of Wuhan University of Technology,2008,30(2):94-96,118(in Chinese))
[11] Xie H P,Ju Y,Peng R D,et al.Energy analysis for damage and catastrophic failure of rocks[J].Science China Technological Sciences,2011,54(s1):199-209.
[12]吴贤振,刘祥鑫,刘洪兴.砂岩岩爆声发射特征及b值动态特性试验研究[J].金属矿山,2011(3):16-18(WU Xianzhen,LIU Xiangxin,LIU Hongxing.Experiment research on AE characteristics and b-value dynamic characteristics of sandstone rock burst[J].Metal Mine,2011(3):16-18(in Chinese))
[13]杨健,王连俊.岩爆机理声发射试验研究[J].岩石力学与工程学报,2005,24(20):3796-3802(YANG Jian,WANG Lianjun.Study on mechanism of rockburst by acoustic emission testing[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(20):3796-3802(in Chinese))
[14]苗金丽,何满潮,李德建,等.花岗岩应变岩爆声发射特征及微观断裂机制[J].岩石力学与工程学报,2009,28(8):1593-1603(MIAO Jinli,HE Manchao,LI Dejian,et al.Acoustic emission characteristics of granite under strain rockburst test and its microfracture mechanism[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(8):1593-1603(in Chinese))
[15]宫宇新,何满潮,汪政红,等.岩石破坏声发射时频分析算法与瞬时频率前兆研究[J].岩石力学与工程学报,2013,32(4):787-799(GONG Yuxin,HE Manchao,WANG Zhenghong,et al.Research on time-frequency analysis algorithm and instantaneous frequency precursors for acoustic emission data from rock failure experiment[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(4):787-799(in Chinese))
[16]苏国韶,蒋剑青,冯夏庭,等.岩爆弹射破坏过程的试验研究[J].岩石力学与工程学报,2016,35(10):1990-1999(SU Guoshao,JIANG Jianqing,FENG Xiating,et al.Experimental study on ejection process in rockburst[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(10):1990-1999(in Chinese))
[17]苏国韶,石焱炯,冯夏庭,等.岩爆过程的声音信号特征研究[J].岩石力学与工程学报,2016(6):1190-1201(SU Guoshao,SHI Yanjiong,FENG Xiating,et al.Acoustic signal characteristics in rockburst process[J].Chinese Journal of Rock Mechanics and Engineering,2016(6):1190-1201(in Chinese))
[18]陈秀铜,李璐.锦屏二级水电站引水隧洞区域三维初始地应力场反演回归分析[J].水文地质工程地质,2007,34(6):55-58,75(CHEN Xiutong,LI Lu.Inverse analysis of initial field stress for Jinping II hydropower station tunnel area[J].Hydrogeology and Engineering Geology,2007,34(6):55-58,75(in Chinese))
[19]张洁.花岗岩快速卸载破坏特性的真三轴试验研究[D].广西大学,2018(ZHANG Jie.True-triaxial expreimental study of granite failure characteristics induced by rapid unloading[D].Guangxi University,2016(in Chinese))
[20]石焱炯.花岗岩试件岩爆过程的声信号特征研究[D].广西大学,2016(SHI Yanjiong.Acousctic signal characteristic study of rockburst process of granitic[D].Guangxi University,2016(in Chinese))
[21]秦四清.初论岩体失稳过程中耗散结构的形成机制[J].岩石力学与工程学报,2000,19(3):265-269(QIN Siqing.Primary discussion on formation mechanism of dissipative structure in instability process of rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(3):265-269(in Chinese))
[22]谢和平.分形-岩石力学导论[M].科学出版社,1996(XIE Heping.Introduction to fractal rock mechanics[M].Beijing:Science Press,1996:198-206(in Chinese))
[23]吴贤振,刘祥鑫,梁正召,等.不同岩石破裂全过程的声发射序列分形特征试验研究[J].岩土力学,2012,33(12):3561-3569(WU Xianzhen,LIU Xiangxin,LIANG Zhengzhao,et al.Experimentalstudy of fractal dimension of AE serials of different rocks under uniaxial compression[J].Rock and Soil Mechanics,2012,33(12):3561-3569(in Chinese))
[24]冯夏庭.智能岩石力学导论[M].科学出版社,2000(FENG Xiating.Intelligent rock mechanics introduction[M].Beijing:Science Press,2000(in Chinese))
[2]徐林生,王兰生,李天斌.国内外岩爆研究现状综述[J].长江科学院院报,1999,16(4):24-27(XU Linsheng,WANG Lansheng,LI Tianbin.Present situation of rockburst research at home and abroad[J].Journal of Yangtze River Scientific Research Institute,1999,16(4):24-27(in Chinese))
[3]姜繁智,向晓东,朱东升.国内外岩爆预测的研究现状与发展趋势[J].工业安全与环保,2003,29(8):19-22(JIANG Fanzhi,XIANG Xiaodong,ZHU Dongsheng.The current status and developing tendency of rock blasting forecast at home and abroad[J].Industrial Safety and Environmental Protection,2003,29(8):19-22(in Chinese))
[4]李庶林,尹贤刚,王泳嘉,等.单轴受压岩石破坏全过程声发射特征研究[J].岩石力学与工程学报,2004,23(15):2499-2503(LI Shulin,YIN Xiangang,WANG Yongjia,et al.Study on acoustic emission characteristics of uniaxial compressive rock failure[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(15):2499-2503(in Chinese))
[5]尹贤刚,李庶林,唐海燕.岩石破坏声发射平静期及其分形特征研究[J].岩石力学与工程学报,2009,28(S2):3383-3390(YIN Xiangang,LI Shulin,TANG Haiyan.Study of quiet period and its fractal characteristics of rock failure acoustic emission[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(S2):3383-3390(in Chinese))
[6]万国香,王其胜,李夕兵.应力波作用下岩石声发射能量特征[J].实验力学,2012,27(6):727-733(WAN Guoxiang,WANG Qisheng,LI Xibing.On the acoustic emission energy characteristics of rock subjected to stress waves[J].Journal of Experimental Mechanics,2012,27(6):727-733(in Chinese))
[7]张艳博,梁鹏,刘祥鑫,等.基于声发射信号主频和熵值的岩石破裂前兆试验研究[J].岩石力学与工程学报,2015(S1):2959-2967(ZHANG Yanbo,LIANG Peng,LIU Xiangxin,et al.Experimental study on precursor of rock burst based on acoustic emission signal dominant-frequency and entropy[J].Chinese Journal of Rock Mechanics and Engineering,2015(S1):2959-2967(in Chinese))
[8]王晓军,肖伟晶,陈辰.基于声发射参量的不同深度灰岩塑性破坏识别研究[J].实验力学,2017,32(1):107-112(WANG Xiaojun,XIAO Weijing,CHEN Chen.On the plastic damage identification of limestone from different depths based on acoustic emission parameters[J].Journal of Experimental Mechanics,2017,32(1):107-112(in Chinese))
[9] Cai M,Morioka H,Kaiser P K.Back-analysis of rock mass strength parameters using AE monitoring data[J].International Journal of Rock Mechanics&Mining Sciences,2007,44(4):538-549.
[10]陈景涛.岩石变形特征和声发射特征的三轴试验研究[J].武汉理工大学学报,2008,30(2):94-96,118(CHEN Jingtao.Experimental study on triaxial compression deformation and acoustic emission property of rock[J].Journal of Wuhan University of Technology,2008,30(2):94-96,118(in Chinese))
[11] Xie H P,Ju Y,Peng R D,et al.Energy analysis for damage and catastrophic failure of rocks[J].Science China Technological Sciences,2011,54(s1):199-209.
[12]吴贤振,刘祥鑫,刘洪兴.砂岩岩爆声发射特征及b值动态特性试验研究[J].金属矿山,2011(3):16-18(WU Xianzhen,LIU Xiangxin,LIU Hongxing.Experiment research on AE characteristics and b-value dynamic characteristics of sandstone rock burst[J].Metal Mine,2011(3):16-18(in Chinese))
[13]杨健,王连俊.岩爆机理声发射试验研究[J].岩石力学与工程学报,2005,24(20):3796-3802(YANG Jian,WANG Lianjun.Study on mechanism of rockburst by acoustic emission testing[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(20):3796-3802(in Chinese))
[14]苗金丽,何满潮,李德建,等.花岗岩应变岩爆声发射特征及微观断裂机制[J].岩石力学与工程学报,2009,28(8):1593-1603(MIAO Jinli,HE Manchao,LI Dejian,et al.Acoustic emission characteristics of granite under strain rockburst test and its microfracture mechanism[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(8):1593-1603(in Chinese))
[15]宫宇新,何满潮,汪政红,等.岩石破坏声发射时频分析算法与瞬时频率前兆研究[J].岩石力学与工程学报,2013,32(4):787-799(GONG Yuxin,HE Manchao,WANG Zhenghong,et al.Research on time-frequency analysis algorithm and instantaneous frequency precursors for acoustic emission data from rock failure experiment[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(4):787-799(in Chinese))
[16]苏国韶,蒋剑青,冯夏庭,等.岩爆弹射破坏过程的试验研究[J].岩石力学与工程学报,2016,35(10):1990-1999(SU Guoshao,JIANG Jianqing,FENG Xiating,et al.Experimental study on ejection process in rockburst[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(10):1990-1999(in Chinese))
[17]苏国韶,石焱炯,冯夏庭,等.岩爆过程的声音信号特征研究[J].岩石力学与工程学报,2016(6):1190-1201(SU Guoshao,SHI Yanjiong,FENG Xiating,et al.Acoustic signal characteristics in rockburst process[J].Chinese Journal of Rock Mechanics and Engineering,2016(6):1190-1201(in Chinese))
[18]陈秀铜,李璐.锦屏二级水电站引水隧洞区域三维初始地应力场反演回归分析[J].水文地质工程地质,2007,34(6):55-58,75(CHEN Xiutong,LI Lu.Inverse analysis of initial field stress for Jinping II hydropower station tunnel area[J].Hydrogeology and Engineering Geology,2007,34(6):55-58,75(in Chinese))
[19]张洁.花岗岩快速卸载破坏特性的真三轴试验研究[D].广西大学,2018(ZHANG Jie.True-triaxial expreimental study of granite failure characteristics induced by rapid unloading[D].Guangxi University,2016(in Chinese))
[20]石焱炯.花岗岩试件岩爆过程的声信号特征研究[D].广西大学,2016(SHI Yanjiong.Acousctic signal characteristic study of rockburst process of granitic[D].Guangxi University,2016(in Chinese))
[21]秦四清.初论岩体失稳过程中耗散结构的形成机制[J].岩石力学与工程学报,2000,19(3):265-269(QIN Siqing.Primary discussion on formation mechanism of dissipative structure in instability process of rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(3):265-269(in Chinese))
[22]谢和平.分形-岩石力学导论[M].科学出版社,1996(XIE Heping.Introduction to fractal rock mechanics[M].Beijing:Science Press,1996:198-206(in Chinese))
[23]吴贤振,刘祥鑫,梁正召,等.不同岩石破裂全过程的声发射序列分形特征试验研究[J].岩土力学,2012,33(12):3561-3569(WU Xianzhen,LIU Xiangxin,LIANG Zhengzhao,et al.Experimentalstudy of fractal dimension of AE serials of different rocks under uniaxial compression[J].Rock and Soil Mechanics,2012,33(12):3561-3569(in Chinese))
[24]冯夏庭.智能岩石力学导论[M].科学出版社,2000(FENG Xiating.Intelligent rock mechanics introduction[M].Beijing:Science Press,2000(in Chinese))