顶板活动地震波突变特征的小波识别
|
摘要
顶板是一种典型非均质岩石材料,在其破坏演化过程中将释放能量产生地震波。采用多分辨率小波技术,对顶板活动诱发地震波所蕴涵的突变特征进行了基于Lipschitz a指数的第一、二类突变异常点识别研究。实例表明,用多分辨率小波可有效对地震波所蕴涵的突变异常信息点进行多尺度辨析,能够对顶板冒落灾变前兆信息进行有效地把握,这为岩石工程中的灾变预报提供了新的思路。
Roof is composed of heterogeneous rock. When roof failure happens,a large amount of energy would release in the form of seismic wave. There are many common methods,such as Fourier transformation,filter technique,etc. to identity the abnormal signal of seismic wave,but the identification accuracy is quite low. Multi-resolution wavelet technique is used to identify the first and second variation point,based on the Lipschitz. An example analysis shows that multi-resolution wavelet technique can identify the abnormal signal of seismic wave effectively in different scales,and the omen of roof fall can be grasped accurately. The presented study provides a new idea for the prediction of catastrophe of rock engineering.
Roof is composed of heterogeneous rock. When roof failure happens,a large amount of energy would release in the form of seismic wave. There are many common methods,such as Fourier transformation,filter technique,etc. to identity the abnormal signal of seismic wave,but the identification accuracy is quite low. Multi-resolution wavelet technique is used to identify the first and second variation point,based on the Lipschitz. An example analysis shows that multi-resolution wavelet technique can identify the abnormal signal of seismic wave effectively in different scales,and the omen of roof fall can be grasped accurately. The presented study provides a new idea for the prediction of catastrophe of rock engineering.
引文
1张兴民,于克君,席京德.微地震技术在煤矿两带监测领域的研究与应用[J].煤炭学报,2000,25(6):566～569
2纪洪广,王基才,单晓云等.混凝土材料声发射过程分形特征及其在断裂分析中的应用[J].岩石力学与工程学报,2001,20(6):801～804
3刘浩.岩石中声发射和裂纹扩展[J].岩石力学与工程学报,2001,(4):518～522
4纪洪广,王基才,单云峰等.声发射技术和非线性理论在预报岩体失稳的应用[J].北京科技大学学报,1998,25(5):258～262
5FujiiY,IshijimaY,DeguchiG.Pr ed icti onof coal facer ock burstandmicros ei smic tyin deep long wallcoalmine[J].Int.J.RockMech.Sci.,1997,34(1):85～96
6谭云亮,孙中辉.冲击地压声发射前兆模式初步研究[J].岩石力学与工程学报,2000,19(4):425～428
7谭云亮,王学水.煤矿坚硬顶板运动过程中声发射特征的初步研究[J].岩石力学与工程学报,1992,11(3):275～283
8田增国,陈翠梅.基于小波分析的声发射信号处理[J].工业安全与环境,2002,28(8):26～27
9敬少群,王佳卫,童迎世.小波变换在余震、弱震区地下水位数据分析中的应用[J].华南地震,2002,22(2):9～12
10张平,施克仁,耿荣生等.小波变换在声发射检测中的应用[J].无损检测,2002,24(10):4 36～439
11Ste pha neGMallat.Atheo ryform ultiresolutio nsi gnaldec ompsition:thewaveletre presentatio n[J].IEEETransact iononPatternAnalysisandMachineIntellgence,1989,11(7):674～693
2纪洪广,王基才,单晓云等.混凝土材料声发射过程分形特征及其在断裂分析中的应用[J].岩石力学与工程学报,2001,20(6):801～804
3刘浩.岩石中声发射和裂纹扩展[J].岩石力学与工程学报,2001,(4):518～522
4纪洪广,王基才,单云峰等.声发射技术和非线性理论在预报岩体失稳的应用[J].北京科技大学学报,1998,25(5):258～262
5FujiiY,IshijimaY,DeguchiG.Pr ed icti onof coal facer ock burstandmicros ei smic tyin deep long wallcoalmine[J].Int.J.RockMech.Sci.,1997,34(1):85～96
6谭云亮,孙中辉.冲击地压声发射前兆模式初步研究[J].岩石力学与工程学报,2000,19(4):425～428
7谭云亮,王学水.煤矿坚硬顶板运动过程中声发射特征的初步研究[J].岩石力学与工程学报,1992,11(3):275～283
8田增国,陈翠梅.基于小波分析的声发射信号处理[J].工业安全与环境,2002,28(8):26～27
9敬少群,王佳卫,童迎世.小波变换在余震、弱震区地下水位数据分析中的应用[J].华南地震,2002,22(2):9～12
10张平,施克仁,耿荣生等.小波变换在声发射检测中的应用[J].无损检测,2002,24(10):4 36～439
11Ste pha neGMallat.Atheo ryform ultiresolutio nsi gnaldec ompsition:thewaveletre presentatio n[J].IEEETransact iononPatternAnalysisandMachineIntellgence,1989,11(7):674～693
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