联合小波变换与偏振分析自动拾取微地震P波到时
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摘要
对微地震P波到时的自动拾取是微地震信号分析和数据处理的主要目标之一。基于小波变换的多尺度分析思想,对微地震信号进行小波处理后的小波系数代替原始信号,应用包含在小波变换系数中的信号偏振信息,提出了联合小波变换与偏振分析自动拾取微地震信号P波到时的方法。通过对嘉阳煤矿监测的实际微地震数据进行小波变换,用多尺度小波分解的各个尺度单支重构信号构成协方差矩阵,求解不同尺度协方差矩阵的最大特征值和次大特征值求取P波到时定位函数,实现P波到时的自动拾取,取得了满意的结果.
Carry out the whole space,real-time and continuous micro earthquake monitoring in mining process,automatically pick up the P wave to determine the rock breaking point,division rock burst zone of the focal point scale of mining process has the extremely vital significance.Therefore,automatically identify micro seismic P-arrval is one of the main goal of the micro seismic signal analysis and data processing.Based on the thought of multiscale wavelet analysis,the author use the wavelet coefficientes by wavelet processing instead of the original signal,applicate the wavelet coefficients included in signal polarization information,propose a method of united wavelet transform and polarization automatically analysis to pick three componets micro seismic P-arrivales.The actual micro seismic monitoring datas in JiaYang mine are handled,use multi-scale wavelet decomposition the original signal and reconstruct varioues of single scale signal to constitute the covariance matrix,the maximum eigenvalue and second eigenvalue in corresponding different scales covariance matrixes are solved to determine the positioning function of p-arrival.Finally,the method pick up the p-arrivales successfully and automatically and obtain satisfied results.
引文
[1]潘一山.矿震的发生和破裂规律研究[博士后出站报告].北京:中国地震局地质研究所.2003.PAN Yi-shan.Rock-burst Occurrence and Rupture Research[postdoctoral final report].Beijing:the institute of geology ofthe China seismological bureau.2003.
    [2]赵国荣.震相分析地震科学的心脏.地震地磁观测与研究.1999,20(5):116-121.ZHAO Rong-guo.Phase Analysis is the Heart of Seismology.Seismological and Geomagnetic Observation and Research.1993.20(5):121-126.
    [3]陈赟,高乐,赵烽帆.一种基于频率域偏振分析提高三分量地震资料信噪比的方法,地球物理学进展,2007,22(1):255-261.CHEN Yun,GAO Le,ZHAO Feng-fan.A method to enhancethe signal/noise ratio of three-component seismic data based onthe polarization analysis in frequency domain.Progress inGeophysics,2007,22(1):255-261.
    [4]Ulrych T J,Sacchi M D,and Graul J M.Signal and noiseseparation:art and science.Geophys,1999,64(5):1648-1656.
    [5]刘建华,刘福田,胥颐.三分量地震资料的偏振分析.地球物理学进展,2006,21(1):6-10.LIU Jian-hua,LIU Fu-tian,XU Yi.Polarization analysis ofthree-component seismic data.Progress in Geophysics,2006,21(1):6-10.
    [6]李英康,崔作舟.分离纵波和横波的偏振旋转法.地球物理学报,1994,37(2):372-282.LI Ying-kang,CUI Zuo-zhou.P and S-waves separated bypolarization revolving methodChinese Journal of Geophysics,1994,37(2):372-282.
    [7]陈飞,赵永,刘阳,周云好等.多尺度分解在地震信号处理中的应用.中国地震.2004,20(4):405-409.CHEN Fei,ZHAO Yong,LIU Yang,ZHOU Yun-hao.Application of Wavelet on Seismic Signal Processing,Earthquake Research In China.2004,20(4):405-409.
    [8]赵鸿儒,孙进忠,等.全波震相分析的应用.地球物理学报.1990,33(1):54-66.ZHAO Hong-ru,SUN Jin-zhong.The Application of Full WavePhase Analysis.Chinese Journal of Geophysics.1990,33(1):54-66.
    [9]Allen R V.Automatic earthquake recognition and timing fromsingle traces.Bull.Seism.Soc.Amer.1978,68(5):1521-1532.
    [10]Coppens F.First arrival picking on common offset trace collectionsfor automatic estimation of static correction.Geophys.Prospec.1985,33(8):1212-1213.
    [11]Ramananantoandro R,Bemitsas N.A computer algorithm forautomatic picking of refraction first-arrival time.Geoexploration.1987,24(1):147-151.
    [12]任继阳.关于P波到时的小波分析方法.玉溪师范高等专科学校学报.1999,15(3):33-36.Ren J Y.Wavelet Transform Methods for P PhaseIdentification in Three-component Seismograms.Journal ofYu Xi Teachers College.1999,15(3):33-36.
    [13]刘代志,王仁明,李夕海,刘志刚.基于小波包分解及AR模型的单通道地震波信号初至点检测.地球物理学报,2005,48(5):1098-1102.LIU Dai-Zhi,WANG Ren-Ming,LI Xi-Hai,LIU Zhi-Gang.Onset point identification of single-channel seismic signalbased on wavelet packet and the AR model.Chinese J.Geophys,2005,48(5):1098-1102.
    [14]吴招才,刘天佑.地震数据去噪中的小波方法.地球物理学进展,2008,23(2):493-499.Wu Zhao-cai,Liu Tian-you.Wavelet transform methods inseismic data noise attenuation.Progress in Geophysics(inChinese),2008,23(2):493-499.
    [15]金解放,赵奎,王晓军,赵康.岩石声发射信号处理小波基选择的研究.矿业研究与开发.2007,27(2):12-15.JIN Jie-fang,ZHAO Kui,WANG Xiao-jun,ZHAO Kang.Study on Selection of Wavelet Basis for Processing of RockAcoustic Emission Signal.Mining Research and Development.2007,27(2):12-15.

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