隧道施工不良地质探地雷达超前探测全波形反演研究
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摘要
为了解掌子面前方不良地质体赋存状况,保障工程施工安全,提出基于全波形反演的探地雷达隧道超前探测数据解译方法。首先,考虑隧道典型不良地质类型,建立溶洞、岩体裂隙和岩体破碎带等数值模型,进行正演模拟分析,总结典型不良地质体的地质雷达正演响应特征。其次,基于全波形反演方法对正演模拟数据进行处理,得到最优的相对介电常数分布,分析反演结果,并总结其相较于正演剖面图解译的优势。研究结果表明,全波形反演可以得到探测区域相对介电常数的较准确分布,得到的不良地质体形态与真实情况较为一致,成像效果明显优于原始雷达剖面图,提高了对不良地质体进行判断的直观性和准确性。
An interpretation method for advance geological prediction data of tunnel by ground penetrating radar( GPR)is put forward based on full waveform inversion,so as to learn the unfavorable geology ahead of tunnel face and guarantee the tunnel safety. Firstly,the typical unfavorable geological conditions are taken into consideration,numerical models for karst caves,fractures and broken zones are established,the forward simulation analysis is carried,and the forward simulation responses of GPR to typical unfavorable geology are summarized. And then,the optimal distribution of relative permittivity is obtained by using full waveform inversion to process the forward simulation data; the inversion results are analyzed and compared with the forward simulation data. The study results show that the relatively exact distribution of the relative permittivity in the prediction area can be obtained by full waveform inversion; the inversion results are consistent with the actual morphology of the unfavorable geological body,and the imaging results are better than the original GPR profile,which can improve the intuition and accuracy of the prediction of the unfavorable geological body.
An interpretation method for advance geological prediction data of tunnel by ground penetrating radar( GPR)is put forward based on full waveform inversion,so as to learn the unfavorable geology ahead of tunnel face and guarantee the tunnel safety. Firstly,the typical unfavorable geological conditions are taken into consideration,numerical models for karst caves,fractures and broken zones are established,the forward simulation analysis is carried,and the forward simulation responses of GPR to typical unfavorable geology are summarized. And then,the optimal distribution of relative permittivity is obtained by using full waveform inversion to process the forward simulation data; the inversion results are analyzed and compared with the forward simulation data. The study results show that the relatively exact distribution of the relative permittivity in the prediction area can be obtained by full waveform inversion; the inversion results are consistent with the actual morphology of the unfavorable geological body,and the imaging results are better than the original GPR profile,which can improve the intuition and accuracy of the prediction of the unfavorable geological body.
引文
[1]洪开荣.我国隧道及地下工程发展现状与展望[J].隧道建设,2015,35(2):95.HONG Kairong. State-of-art and prospect of tunnels and understand works in China[J]. Tunnel Construction,2015,35(2):95.
[2]曾昭发,刘四新,冯癶.地质雷达原理与应用[M].北京:电子工业出版社,2010.ZENG Zhaofa, LIU Sixin, FENG Xuan. Principle and application of ground penetrating radar[M]. Beijing:Publishing House of Electronics Industry,2010.
[3]董茂干,吴姗姗,黄宁,等.探地雷达在南京地铁隧道工程检测中的应用[J].物探与化探,2014,38(5):1090.DONG Maogan,WU Shanshan,HUANG Ning,et al. The application of ground penetrating radar to subway tunnel engineering testing in Nanjing[J]. Geophysical and Geochemical Exploration,2014,38(5):1090.
[4]肖宏跃,雷宛,杨威.地质雷达特征图像与典型地质现象的对应关系[J].岩土力学,2008,36(4):57.XIAO Hongyue, LEI Wan, YANG Wei. Correspondence between geological characteristics of radar images and typical geological phenomenon[J]. Rock and Soil Mechanics,2008,36(4):57.
[5]张家松,朱自强,鲁光银,等.偏移成像与希尔伯特变换在地质雷达探测隧道裂隙流水通道中的应用[J].地球物理学进展,2012,27(6):2722.ZHANG Jiasong, ZHU Ziqiang, LU Guangyin, et al.Applocation of migration and Hillbert transform on exploration of karst fractured ground water channel in the tunnel with GPR[J]. Progress in Geophysics,2012,27(6):2722.
[6] LIU S,LEI L,FU L,et al. Application of pre-stack reverse time migration based on FWI velocity estimation to ground penetrating radar data[J]. Journal of Applied Geophysics,2014,107(4):1.
[7] LAVOUF,BROSSIER R,GARAMBOIS S,et al. 2D full waveform inversion of GPR surface data:Permittivity and conductivity imaging[C]//International Workshop on Advanced Ground Penetrating Radar. Nantes:IEEE,2013:1.
[8]刘斌,李术才,李树忱,等.复信号分析技术在地质雷达预报岩溶裂隙水中的应用研究[J].岩土力学,2009,30(7):2191.LIU Bin,LI Shucai,LI Shuchen,et al. Study of application of complex signal analysis to predicting karst-fractured ground water with GPR[J]. Rock and Soil Mechanics,2009,30(7):2191.
[9] ZHOU L,HUANG C,SU Y. A fast back-projection algorithm based on cross correlation for GPR imaging[J]. IEEE Geoscience&Remote Sensing Letters,2012,9(2):228.
[10]刘传孝,蒋金泉,杨永杰.断层特征参数地质雷达探测与识别的应用研究[J].岩土力学,2004,25(5):832.LIU Chuanxiao,JIANG Jinquan,YANG Yongjie. Research on application of ground penetrating radar to detecting and identifying parameters of faults[J]. Rock and Soil Mechanics,2004,25(5):832.
[11] TARANTOLA A. Inversion of seismic reflection data in the acoustic approximation[J]. Geophysics, 1984, 49(8):1259.
[12] BUSCH S,KRUK J,BIKOWSKI J,et al. Quantitative conductivity and permittivity estimation using full-waveform inversion of on-ground GPR data[J]. Geophysics,2012,77(6):79.
[13]吴俊军.跨孔雷达全波形层析成像反演方法的研究[D].长春:吉林大学,2012.WU Junjun. Research on cross-borehole radar tomography using full-waveform inversion method[D]. Changchun:Jilin University,2012.
[14]孟旭.时间域和频率域跨孔雷达波形反演及比较研究[D].长春:吉林大学,2016.MENG Xu. Time domain and frequency domain waveform inversion of crosshole radar data and comparative research[D]. Changchun:Jilin University,2016.
[15]李尧.隧道施工不良地质跨孔雷达超前探测方法与工程应用[D].济南:山东大学,2017.LI Yao. The crosshole GPR ahead prospecting method and its application for adverse geology in tunnel construction[D]. Jinan:Shandong University,2017.
[16] TAKENAKA T,JIA H,TANAKA T. Microwave imaging of electrical property distributions by a forward-backward timestepping method[J]. Journal of Electromagnetic Waves and Applications,2000,14(12):1609.
[17]王唢,赵明阶,林志.公路隧道施工常见地质灾害问题综述[J].公路交通技术,2009(1):102.WANG Suo, ZHAO Mingjie, LIN Zhi. Summary of common geologic hazards during highway tunnel construction[J]. Technology of Highway and Transport,2009(1):102.
[18]周轮,李术才,许振浩,等.隧道施工期超前预报地质雷达异常干扰识别及处理[J].隧道建设,2016,36(12):1517.ZHOU Lun,LI Shucai,XU Zhenhao,et al. Interpretation and treatment of interfering factors in advance geological prediction by ground penetrating radar of tunnel construction[J]. Tunnel Construction, 2016, 36(12):1517.
[19]邓国文,王齐仁,廖建平,等.隧道不良地质现象的探地雷达正演模拟与超前探测[J].物探与化探,2015,39(3):651.DENG Guowen, WANG Qiren, LIAO Jianping, et al.Forward modeling and advanced detection of radar in adverse geological phenomena tunnel[J]. Geophysical and Geochemical Exploration,2015,39(3):651.
[20]李尧,李术才,刘斌,等.基于改进后向投影算法的地质雷达探测岩体裂隙的成像方法[J].岩土工程学报,2016,38(8):1425.LI Yao,LI Shucai,LIU Bin,et al. Imaging method of ground penetrating radar for rock fracture detection based on improved back projection algorithm[J]. Chinese Journal of Geotechnical Engineering,2016,38(8):1425.
[21]杨会军,胡春林,谌文武,等.断层及其破碎带隧道信息化施工[J].岩石力学与工程学报,2004,23(22):3917.YANG Huijun, HU Chunlin, CHEN Wenwu, et al.Information construction of the tunnel in a fault and crash zone[J]. Chinese Journal of Rock Mechanics and Engineering,2004,23(22):3917.
[2]曾昭发,刘四新,冯癶.地质雷达原理与应用[M].北京:电子工业出版社,2010.ZENG Zhaofa, LIU Sixin, FENG Xuan. Principle and application of ground penetrating radar[M]. Beijing:Publishing House of Electronics Industry,2010.
[3]董茂干,吴姗姗,黄宁,等.探地雷达在南京地铁隧道工程检测中的应用[J].物探与化探,2014,38(5):1090.DONG Maogan,WU Shanshan,HUANG Ning,et al. The application of ground penetrating radar to subway tunnel engineering testing in Nanjing[J]. Geophysical and Geochemical Exploration,2014,38(5):1090.
[4]肖宏跃,雷宛,杨威.地质雷达特征图像与典型地质现象的对应关系[J].岩土力学,2008,36(4):57.XIAO Hongyue, LEI Wan, YANG Wei. Correspondence between geological characteristics of radar images and typical geological phenomenon[J]. Rock and Soil Mechanics,2008,36(4):57.
[5]张家松,朱自强,鲁光银,等.偏移成像与希尔伯特变换在地质雷达探测隧道裂隙流水通道中的应用[J].地球物理学进展,2012,27(6):2722.ZHANG Jiasong, ZHU Ziqiang, LU Guangyin, et al.Applocation of migration and Hillbert transform on exploration of karst fractured ground water channel in the tunnel with GPR[J]. Progress in Geophysics,2012,27(6):2722.
[6] LIU S,LEI L,FU L,et al. Application of pre-stack reverse time migration based on FWI velocity estimation to ground penetrating radar data[J]. Journal of Applied Geophysics,2014,107(4):1.
[7] LAVOUF,BROSSIER R,GARAMBOIS S,et al. 2D full waveform inversion of GPR surface data:Permittivity and conductivity imaging[C]//International Workshop on Advanced Ground Penetrating Radar. Nantes:IEEE,2013:1.
[8]刘斌,李术才,李树忱,等.复信号分析技术在地质雷达预报岩溶裂隙水中的应用研究[J].岩土力学,2009,30(7):2191.LIU Bin,LI Shucai,LI Shuchen,et al. Study of application of complex signal analysis to predicting karst-fractured ground water with GPR[J]. Rock and Soil Mechanics,2009,30(7):2191.
[9] ZHOU L,HUANG C,SU Y. A fast back-projection algorithm based on cross correlation for GPR imaging[J]. IEEE Geoscience&Remote Sensing Letters,2012,9(2):228.
[10]刘传孝,蒋金泉,杨永杰.断层特征参数地质雷达探测与识别的应用研究[J].岩土力学,2004,25(5):832.LIU Chuanxiao,JIANG Jinquan,YANG Yongjie. Research on application of ground penetrating radar to detecting and identifying parameters of faults[J]. Rock and Soil Mechanics,2004,25(5):832.
[11] TARANTOLA A. Inversion of seismic reflection data in the acoustic approximation[J]. Geophysics, 1984, 49(8):1259.
[12] BUSCH S,KRUK J,BIKOWSKI J,et al. Quantitative conductivity and permittivity estimation using full-waveform inversion of on-ground GPR data[J]. Geophysics,2012,77(6):79.
[13]吴俊军.跨孔雷达全波形层析成像反演方法的研究[D].长春:吉林大学,2012.WU Junjun. Research on cross-borehole radar tomography using full-waveform inversion method[D]. Changchun:Jilin University,2012.
[14]孟旭.时间域和频率域跨孔雷达波形反演及比较研究[D].长春:吉林大学,2016.MENG Xu. Time domain and frequency domain waveform inversion of crosshole radar data and comparative research[D]. Changchun:Jilin University,2016.
[15]李尧.隧道施工不良地质跨孔雷达超前探测方法与工程应用[D].济南:山东大学,2017.LI Yao. The crosshole GPR ahead prospecting method and its application for adverse geology in tunnel construction[D]. Jinan:Shandong University,2017.
[16] TAKENAKA T,JIA H,TANAKA T. Microwave imaging of electrical property distributions by a forward-backward timestepping method[J]. Journal of Electromagnetic Waves and Applications,2000,14(12):1609.
[17]王唢,赵明阶,林志.公路隧道施工常见地质灾害问题综述[J].公路交通技术,2009(1):102.WANG Suo, ZHAO Mingjie, LIN Zhi. Summary of common geologic hazards during highway tunnel construction[J]. Technology of Highway and Transport,2009(1):102.
[18]周轮,李术才,许振浩,等.隧道施工期超前预报地质雷达异常干扰识别及处理[J].隧道建设,2016,36(12):1517.ZHOU Lun,LI Shucai,XU Zhenhao,et al. Interpretation and treatment of interfering factors in advance geological prediction by ground penetrating radar of tunnel construction[J]. Tunnel Construction, 2016, 36(12):1517.
[19]邓国文,王齐仁,廖建平,等.隧道不良地质现象的探地雷达正演模拟与超前探测[J].物探与化探,2015,39(3):651.DENG Guowen, WANG Qiren, LIAO Jianping, et al.Forward modeling and advanced detection of radar in adverse geological phenomena tunnel[J]. Geophysical and Geochemical Exploration,2015,39(3):651.
[20]李尧,李术才,刘斌,等.基于改进后向投影算法的地质雷达探测岩体裂隙的成像方法[J].岩土工程学报,2016,38(8):1425.LI Yao,LI Shucai,LIU Bin,et al. Imaging method of ground penetrating radar for rock fracture detection based on improved back projection algorithm[J]. Chinese Journal of Geotechnical Engineering,2016,38(8):1425.
[21]杨会军,胡春林,谌文武,等.断层及其破碎带隧道信息化施工[J].岩石力学与工程学报,2004,23(22):3917.YANG Huijun, HU Chunlin, CHEN Wenwu, et al.Information construction of the tunnel in a fault and crash zone[J]. Chinese Journal of Rock Mechanics and Engineering,2004,23(22):3917.