基于CMPCC二维面波的吸收散射综合分析法
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摘要
多道瞬态面波方法(MASW)在铁路路基质量及岩溶注浆检测中有许多应用,但分辨率不高限制了MASW更广泛的应用.针对MASW存在的问题,共中心点互相关(CMPCC)二维面波方法显著地提高了横向分辨率.但在复杂地下结构的情况下,CMPCC通过对频散曲线一维反演重构获得的二维横波断面,有可能畸变或损失大量地下信息,造成分析解释错误.通过大量数据对比分析研究,首次定义了表征面波传播的动力学参数——吸收散射系数,提出了基于CMPCC二维面波的吸收散射综合分析法(ASCA):(1)将表征面波传播动力学性质的吸收散射系数(AS)和运动学性质的相速度c一并综合分析,提高了空间分辨率及对异常性质解释的准确性;(2)继承了CMPCC方法优点,放弃了对频散曲线进行一维反演,数据处理没有人为影响,图件简单直接,易于分析;(3)在地基沉降与塌陷、地基处理与注浆检测、黄土湿陷、活动断层位置确定等浅层勘察中有着广泛的应用前景.
The Multi-channel Analysis of Surface-Wave(MASW) method has many applications in undestructive detection of the quality of railway subgrade and karst grouting, but its resolution is not high, which limits the application of the method. For the problems of MASW, Common Mid Point Cross Correlation(CMPCC) two-dimensional surface wave method can improve the lateral resolution significantly, but in the case of complex under-foundation, two-dimensional shear wave velocity section reconstructed by one-dimensional inversion of the dispersion curve, may distort and/or loss a lot of underground information, which can result in analysis and interpretation errors. Through the comparative analysis of a large number of data, firstly we define Absorption Scattering Coefficient(AS), which is one the dynamic parameters of the surface wave propagation, and propose a new absorption and scattering comprehensive analysis method based on CMPCC two-dimensional surface wave(ASCA). Therefore good results have been obtained in many projects:(1)The Absorption and Scattering Coefficient(AS), charactering the dynamic properties of the surface wave propagation, and the phase velocity(c), the kinematic properties, in conjunction with the comprehensive interpretation, can significantly improve the spatial resolution and accuracy of and the anomalous properties;(2)inheriting the advantages of CMPCC algorithm, give up one-dimensional inversion of the dispersion curve, data processing without human impact, section are simple and direct, easy analysis;(3)It has a wide application prospect in the shallow investigation of foundation settlement and collapse, foundation treatment and grouting detection, loess collapsibility, active fault location determination and so on.
The Multi-channel Analysis of Surface-Wave(MASW) method has many applications in undestructive detection of the quality of railway subgrade and karst grouting, but its resolution is not high, which limits the application of the method. For the problems of MASW, Common Mid Point Cross Correlation(CMPCC) two-dimensional surface wave method can improve the lateral resolution significantly, but in the case of complex under-foundation, two-dimensional shear wave velocity section reconstructed by one-dimensional inversion of the dispersion curve, may distort and/or loss a lot of underground information, which can result in analysis and interpretation errors. Through the comparative analysis of a large number of data, firstly we define Absorption Scattering Coefficient(AS), which is one the dynamic parameters of the surface wave propagation, and propose a new absorption and scattering comprehensive analysis method based on CMPCC two-dimensional surface wave(ASCA). Therefore good results have been obtained in many projects:(1)The Absorption and Scattering Coefficient(AS), charactering the dynamic properties of the surface wave propagation, and the phase velocity(c), the kinematic properties, in conjunction with the comprehensive interpretation, can significantly improve the spatial resolution and accuracy of and the anomalous properties;(2)inheriting the advantages of CMPCC algorithm, give up one-dimensional inversion of the dispersion curve, data processing without human impact, section are simple and direct, easy analysis;(3)It has a wide application prospect in the shallow investigation of foundation settlement and collapse, foundation treatment and grouting detection, loess collapsibility, active fault location determination and so on.
引文
Han Y Q,He G H,Cai S F,et al. 2014. The absorption and scattering comprehensive analysis method based on CMPCC two-dimensional surface waves [P]. China,201410639110[P].
Hayashi K,Suzuki H. 2004a. Development of Surface-wave Methods and Its Application to Site Investigations [EB/OL]. Kyoto University Research Information Repository,Http://hdl.handle.net/2433/57255.
Hayashi K,Suzuki H. 2004b. CMP cross-correlation analysis of multi-channel surface-wave data [J]. Exploration Geophysics,35(1): 7-13.
Jia H,He Z Q,Ye T L. 2010. Application of SASW and MASW to buried fault detection [J]. Progress in Geophysics (in Chinese),25(2): 709-713,doi:10.3969/j.issn.1004-2903.2010.02.046.贾辉,何正勤,叶太兰. 2010. SASW及MASW方法在隐伏断层探测中的应用[J]. 地球物理学进展,25(2): 709-713,doi: 10.3969/j.issn.1004-2903.2010.02.046.
Park C B,Miller R D,Ryden N,et al. 2005. Combined use of active and passive surface waves [J]. Journal of Environmentaland engineering geophysics,10(3): 323-334.
Park C B,Miller R D,Xia J. 1999. Multichannel analysis of surface waves [J]. Geophysics,64(3): 800-808.
QI S W,SUN J Z,He H. 2002. Review of Rayleigh Wave Exploration [J]. Progress in Geophysics (in Chinese),17(4): 630- 635,662,doi: 10.3969/j.issn.1004-2903.2002.04.011.祁生文,孙进忠,何华. 2002. 瑞雷波勘探的研究现状及展望[J]. 地球物理学进展,17(4): 630- 635,662,doi: 10.3969/j.issn.1004-2903.2002.04.011.
Xia J,Miller R D,Park C B. 1999b. Estimation of near-surface shear-wave velocity by inversion of Rayleigh waves [J]. Geophysics,64(3): 691-700.
YUAN M D. 2004. Technological progress of engineering seismic exploration [J]. Progress in Geophysics (in Chinese),19(4): 874-852,doi: 10.3969/j.issn.1004-2903.2004.04.023.袁明德. 2004. 工程地震勘探技术的进展[J]. 地球物理学进展,19(4): 874-852,doi: 10.3969/j.issn.1004-2903.2004.04.023.
Zhang Z M,Wei W L,Chen Y M,et al. 1992. Application of transient surface wave testing technology in foundation treatment evaluation [J]. Geophysical & Geochemical Exploration (in Chinese),16(1): 48-55.张忠苗,魏王伦,陈云敏,等. 1992. 瞬态面波测试技术在地基处理评价中的应用[J]. 物探与化探,16(1): 48-55.
Zhao D. 2010. Passive source surface wave exploration method and its application [J]. Geophysical & Geochemical Exploration (in Chinese),34(6): 759-764.赵东. 2010. 被动源面波勘探方法与应用[J]. 物探与化探,34(6): 759-764.
Zheng L N,Xie Q,Feng Z G,et al. 2011. Field tests on grouting effect of karst roadbed based on transient Rayleigh wave method [J]. Chinese Journal of Geotechnical Engineering (in Chinese),33(12): 1934-1937.郑立宁,谢强,冯治国,等. 2011. 瞬态瑞雷面波法岩溶路基注浆质量检测现场试验研究[J]. 岩土工程学报,33(12): 1934-1937.
Zhou Z S,Liu X L,Xiao X Y. 2007. Finite_difference modelling of Rayleigh surface wave in elastic media [J]. Chinese Journal of Geophysics (in Chinese),50(2): 567-573.周竹生,刘喜亮,熊孝雨. 2007. 弹性介质中瑞雷面波有限差分法正演模拟[J].地球物理学报,50(2): 567-573.
韩永琦,贺光华,蔡少峰,等. 2016. 基于CMPCC二维面波的吸收散射综合分析法[P]. 中国,201410639110[P].
Hayashi K,Suzuki H. 2004a. Development of Surface-wave Methods and Its Application to Site Investigations [EB/OL]. Kyoto University Research Information Repository,Http://hdl.handle.net/2433/57255.
Hayashi K,Suzuki H. 2004b. CMP cross-correlation analysis of multi-channel surface-wave data [J]. Exploration Geophysics,35(1): 7-13.
Jia H,He Z Q,Ye T L. 2010. Application of SASW and MASW to buried fault detection [J]. Progress in Geophysics (in Chinese),25(2): 709-713,doi:10.3969/j.issn.1004-2903.2010.02.046.贾辉,何正勤,叶太兰. 2010. SASW及MASW方法在隐伏断层探测中的应用[J]. 地球物理学进展,25(2): 709-713,doi: 10.3969/j.issn.1004-2903.2010.02.046.
Park C B,Miller R D,Ryden N,et al. 2005. Combined use of active and passive surface waves [J]. Journal of Environmentaland engineering geophysics,10(3): 323-334.
Park C B,Miller R D,Xia J. 1999. Multichannel analysis of surface waves [J]. Geophysics,64(3): 800-808.
QI S W,SUN J Z,He H. 2002. Review of Rayleigh Wave Exploration [J]. Progress in Geophysics (in Chinese),17(4): 630- 635,662,doi: 10.3969/j.issn.1004-2903.2002.04.011.祁生文,孙进忠,何华. 2002. 瑞雷波勘探的研究现状及展望[J]. 地球物理学进展,17(4): 630- 635,662,doi: 10.3969/j.issn.1004-2903.2002.04.011.
Xia J,Miller R D,Park C B. 1999b. Estimation of near-surface shear-wave velocity by inversion of Rayleigh waves [J]. Geophysics,64(3): 691-700.
YUAN M D. 2004. Technological progress of engineering seismic exploration [J]. Progress in Geophysics (in Chinese),19(4): 874-852,doi: 10.3969/j.issn.1004-2903.2004.04.023.袁明德. 2004. 工程地震勘探技术的进展[J]. 地球物理学进展,19(4): 874-852,doi: 10.3969/j.issn.1004-2903.2004.04.023.
Zhang Z M,Wei W L,Chen Y M,et al. 1992. Application of transient surface wave testing technology in foundation treatment evaluation [J]. Geophysical & Geochemical Exploration (in Chinese),16(1): 48-55.张忠苗,魏王伦,陈云敏,等. 1992. 瞬态面波测试技术在地基处理评价中的应用[J]. 物探与化探,16(1): 48-55.
Zhao D. 2010. Passive source surface wave exploration method and its application [J]. Geophysical & Geochemical Exploration (in Chinese),34(6): 759-764.赵东. 2010. 被动源面波勘探方法与应用[J]. 物探与化探,34(6): 759-764.
Zheng L N,Xie Q,Feng Z G,et al. 2011. Field tests on grouting effect of karst roadbed based on transient Rayleigh wave method [J]. Chinese Journal of Geotechnical Engineering (in Chinese),33(12): 1934-1937.郑立宁,谢强,冯治国,等. 2011. 瞬态瑞雷面波法岩溶路基注浆质量检测现场试验研究[J]. 岩土工程学报,33(12): 1934-1937.
Zhou Z S,Liu X L,Xiao X Y. 2007. Finite_difference modelling of Rayleigh surface wave in elastic media [J]. Chinese Journal of Geophysics (in Chinese),50(2): 567-573.周竹生,刘喜亮,熊孝雨. 2007. 弹性介质中瑞雷面波有限差分法正演模拟[J].地球物理学报,50(2): 567-573.
韩永琦,贺光华,蔡少峰,等. 2016. 基于CMPCC二维面波的吸收散射综合分析法[P]. 中国,201410639110[P].