小波分析应用于瑞雷波频散曲线提取研究
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摘要
频散曲线的求取是瑞雷波勘探的基础性工作。为了能够从实测瑞雷波地震记录中准确提取出频散曲线,基于小波分析的多分辨率分析的特点,将小波变换应用到频散曲线的提取研究中。介绍了基于小波分析的频散曲线提取的计算过程和基于matlab的离散数据处理的算法流程,分析比较了小波分析和表面波谱法的计算结果,用实例说明小波分析能够应用于瑞雷波频散曲线的提取,且存在提纯性能好、可靠性高、深部探测精度高等优点。针对母小波选择、计算过程集成化等问题,提出了下一步的研究方向。
Calculating the dispersion curve is the basic research of Rayleigh wave exploration. In order to extract the dispersion curve from the measured Rayleigh wave seismic records accurately,wavelet transform is applied to study the dispersion curve extraction because of its multi-resolution character. This paper introduces the calculation process of the dispersion curve extraction based on wavelet analysis and the processing method of discrete data based on matlab. A practical example is used to prove that the wavelet analysis can be applied to Rayleigh wave dispersion curve extraction,with the advantages of good purification performance,high reliability,high deep detection precision and so on. In view of the mother wavelet selection and calculation integration,this paper also proposes the further research direction.
Calculating the dispersion curve is the basic research of Rayleigh wave exploration. In order to extract the dispersion curve from the measured Rayleigh wave seismic records accurately,wavelet transform is applied to study the dispersion curve extraction because of its multi-resolution character. This paper introduces the calculation process of the dispersion curve extraction based on wavelet analysis and the processing method of discrete data based on matlab. A practical example is used to prove that the wavelet analysis can be applied to Rayleigh wave dispersion curve extraction,with the advantages of good purification performance,high reliability,high deep detection precision and so on. In view of the mother wavelet selection and calculation integration,this paper also proposes the further research direction.
引文
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[12]Song X H,Li D Y,Gu H M,et al.Insights into performance of pattern search algorithms for high-frequency surface wave analysis[J].Computers Geosciences,2009,35(8):1603-1619.
[13]崔占荣,张世洪,张俊喻.瞬态瑞雷波勘探中一些问题的讨论[J].物探与化探,1995,19(5):369-377.CUI Zhanrong,ZHANG Shihong,ZHANG Junyu.A discussion on some problems in transient state rayleigh wave exploration[J].Geophysical&Geochemical Exploration,1995,19(5):369-377.(in Chinese)
[14]李杰.多道瞬态瑞雷波数字处理软件及其应用研究[D].北京:中国地质大学,2010:28-30.LI Jie.The study of digital processing software and application in multi-channel transient rayleigh wave Data[J].Beijing:China University of Geosciences,2010:28-30.(in Chinese)
[15]房曰荣,沈斐敏.基于小波阈值的瑞雷波信号去噪研究[J].南京工程学院学报:自然科学版,2012,10(4):43-47.FANG Yuerong,SHEN Feimin.A study on the signal de-noising of rayleigh wave based on wavelet threshold[J].Journal of Nanjing Institute of Technology:Natural Science Edition,2012,10(4):43-47.(in Chinese)
[16]张碧星,鲁来玉,鲍光淑.瑞利波勘探中"之"字形频散曲线研究[J].地球物理学报,2002,45(2):263-272.ZHANG Bixing,LU Laiyu BAO Guangshu.A study on zigzag dispersion curves in rayleigh wave exploration[J].Chinese Journal of Geophysics,2002,45(2):263-272.(in Chinese)
[2]房曰荣,沈斐敏.瑞雷波探测技术在公路隧道超前地质预报中的应用[J].安全与环境工程,2012,1(2):132-135.FANG Yuerong,SHEN Feimin.Applications of Rayleigh wave in highway tunnel advanced geological prediction[J].Safety and Environmental Engineering,2012,1(2):132-135.(in Chinese)
[3]卢建旗,李山有,谢志南,等.基于瑞雷波法的成都盆地场地剪切波速结构确定[J].地震工程与工程振动,2012,32(2):35-40.LU Jianqi,LI Shanyou,XIE Zhinan,et al.Multi-channel analysis of surface wave method based determination of S-wave velocity structure of Chengdu Basin[J].Journal of Earthquake Engineering and Engineering Vibration,2012,32(2):35-40.(in Chinese)
[4]卢建旗,李山有,李伟.基于瑞雷波法的都江堰市区场地剪切波速结构[J].地震工程与工程振动,2012,32(6):1-9.LU Jianqi,LI Shanyou,LI Wei.Multi-channel analysis of surface wave method based determination of S-wave velocity structure in Dujiangyan area[J].Journal of Earthquake Engineering and Engineering Vibration,2012,32(6):1-9.(in Chinese)
[5]罗敏,黄真萍,许建福,等.瞬态瑞雷波法在地基加固检测中的应用[J].福州大学学报:自然科学版,2005,33(2):218-222.LUO Min,HUANG Zhenping,XU Jianfu,et al.Application of transient Rayleigh wave method in the detection of ground consolidation[J].Journal of Fuzhou University:Natural Science,2005,33(2):218-222.(in Chinese)
[6]魏勤,卫婷,宋广三.超声瑞利波测试材料表面载荷应力的实验研究[J].实验力学,2011,26(2):176-180.WEI Qin,WEI Ting,SONG Gangsan.Experimental study on the surface applied stress measurement with rayleigh wave[J].Journal of Experimental Mechanic,2011,26(2):176-180.(in Chinese)
[7]师黎静,陶夏新,Robert Kayen,等.场地瑞利波频散特性的测试方法研究[J].地震工程与工程振动,2005,25,(6):24-29.SHI Lijing,TAO Xiaxin,Robert Kayen,et al.Study on evaluation methods for Rayleigh wave dispersion characteristic[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25,(6):24-29.(in Chinese)
[8]柴华友,卢应发,刘明贵,等.表面波谱分析影响因素研究[J].岩土力学,2004,25(3):347-353.CHAI Huayou,LU Yingfa,LIU Minggui.Influences of measuring factors on spectral analysis in surface wave testing[J].Rock and Soil Mechanics,2004,25(3):347-353.(in Chinese)
[9]陈淑珍,刘怀林.基于τ-p变换的频散曲线及其算法实现[J].武汉大学学报:自然科学版,2000,46(l):123-126.CHEN Shuzhen,LIN Huailin.Requesting transient-state rayleigh wave'sλR-VRcurve byτ-p transformation and its realization of arithmetic[J].J.Wuhan Univ.(Nat.Sei.Ed.),2000,46(1):123-126.(in Chinese)
[10]宋先海,肖柏勋,张学强,等.用改进的τ-p变换算法提取瞬态瑞雷波频散曲线[J].物探与化探,2003,27(4):292-295.SONG Xianhai,XIAO Boxun,ZHANG Xueqiang,et al.The application of improvedτ-p transform algorithm to the extraction of dispersion curve of transient rayleigh wave[J].Geophysical&Geochemical Exploration,2003,27(4):292-295.(in Chinese)
[11]张碧星,鲁来玉.用频率-波数法分析瑞雷面波频散曲线[J].工程地球物理学报,2005,2(4):245-248.ZHANG Bixing,LU Laiyu.Investigation on the dispersion curves of rayleigh wave by frequency-wave number analysis method[J].Chinese Journal of Engineering Geophysics,2005,2(4):245-248.(in Chinese)
[12]Song X H,Li D Y,Gu H M,et al.Insights into performance of pattern search algorithms for high-frequency surface wave analysis[J].Computers Geosciences,2009,35(8):1603-1619.
[13]崔占荣,张世洪,张俊喻.瞬态瑞雷波勘探中一些问题的讨论[J].物探与化探,1995,19(5):369-377.CUI Zhanrong,ZHANG Shihong,ZHANG Junyu.A discussion on some problems in transient state rayleigh wave exploration[J].Geophysical&Geochemical Exploration,1995,19(5):369-377.(in Chinese)
[14]李杰.多道瞬态瑞雷波数字处理软件及其应用研究[D].北京:中国地质大学,2010:28-30.LI Jie.The study of digital processing software and application in multi-channel transient rayleigh wave Data[J].Beijing:China University of Geosciences,2010:28-30.(in Chinese)
[15]房曰荣,沈斐敏.基于小波阈值的瑞雷波信号去噪研究[J].南京工程学院学报:自然科学版,2012,10(4):43-47.FANG Yuerong,SHEN Feimin.A study on the signal de-noising of rayleigh wave based on wavelet threshold[J].Journal of Nanjing Institute of Technology:Natural Science Edition,2012,10(4):43-47.(in Chinese)
[16]张碧星,鲁来玉,鲍光淑.瑞利波勘探中"之"字形频散曲线研究[J].地球物理学报,2002,45(2):263-272.ZHANG Bixing,LU Laiyu BAO Guangshu.A study on zigzag dispersion curves in rayleigh wave exploration[J].Chinese Journal of Geophysics,2002,45(2):263-272.(in Chinese)
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