地下管线及油污泄漏地质雷达正演模拟研究
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摘要
在地下空间建设开发过程中,由于施工挖坏地下管线导致的工程事故频发,因此对地下管线及其泄漏物进行监测和评估具有重要意义。通过建立理想条件下地层结构模型,采用基于时域有限差分法(FDTD)的GPRMax程序,通过MATLAB编程对不同地下管线及油污泄漏情况进行地质雷达正演模拟,通过频谱分析得出管线及油污在雷达图像上的典型特征信号,给出了地下管线及油污泄漏的地质雷达探测信号分析基本原则。结合工程实例,验证了地下管线及油污泄漏地质雷达探测正演模拟和分析原则的可靠性。研究有助于对地下管线及油污泄漏实测雷达图像的解读,为相关工程应用提供参考。
In the process of underground space construction and development,the engineering accidents frequently occur due to the excavation of underground pipelines. It is of great significance to monitor and evaluate the underground pipelines and their leakage. In this paper,the GPRMax program based on finite difference time domain(FDTD) was used to establish the stratum structure model under ideal conditions. The forward modeling of GPR for different underground pipelines and oil spills were carried out by MATLAB. The typical characteristic signals of pipelines and oil spills on radar images were obtained by spectrum analysis. The basic principle of GPR detection signal analysis for underground pipelines and oil spill was given. The reliability of the forward simulation and analysis principle of GPR detection for underground pipelines and oil spill was verified by engineering examples. It is helpful to interpret the real radar images of underground pipelines and oil spill,it will provide the reference for related engineering applications.
In the process of underground space construction and development,the engineering accidents frequently occur due to the excavation of underground pipelines. It is of great significance to monitor and evaluate the underground pipelines and their leakage. In this paper,the GPRMax program based on finite difference time domain(FDTD) was used to establish the stratum structure model under ideal conditions. The forward modeling of GPR for different underground pipelines and oil spills were carried out by MATLAB. The typical characteristic signals of pipelines and oil spills on radar images were obtained by spectrum analysis. The basic principle of GPR detection signal analysis for underground pipelines and oil spill was given. The reliability of the forward simulation and analysis principle of GPR detection for underground pipelines and oil spill was verified by engineering examples. It is helpful to interpret the real radar images of underground pipelines and oil spill,it will provide the reference for related engineering applications.
引文
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[14]李尧,李术才,徐磊,等.隧道衬砌病害地质雷达探测正演模拟与应用[J].岩土力学,2016(12):3627-3634.Li Yao,Li Shucai,Xu Lei,et al. Forward modeling and applicationof GPR detection for tunnel lining diseases[J]. Geomechanics,2016(12):3627-3634.
[15] Sun H,Pashoutani S,Zhu J. Nondestructive evaluation of concretebridge decks with automated acoustic scanning system and groundpenetrating radar[J]. Sensors,2018(18):235-247.
[16] Rodes J P,Gracia V P,Reguero A M. Evaluation of the GPR fre-quency spectra in asphalt pavement assessment[J]. Constructionand Building Materials,2015(96):181-188.
[17] Ge Debiao. Finite-difference time-domain method for electromag-netic waves[M]. Xi'an:Xidian University Press,2011.
[18] Yee K S. Numerical solution of initial boundary value problems in-volving maxwell equations in isotropic media[J]. Antennas Propa-gate,1966(14):302-307.
[19]薛桂霞,王鹏.探地雷达时域有限差分法正演模拟[J].物探与化探,2006(3):244-246.Xue Guixia,Wang Peng. Ground penetrating radar finite differencetime domain forward modeling[J]. Geophysical and GeochemicalExploration,2006(3):244-246.
[20]王复明,李嘉,蔡迎春.路面雷达电磁波的时域有限差分法模拟[J].郑州大学学报(工学版),2005(1):28-32.Wang Fuming,Li Jia,Cai Yingchun. Finite-difference time-domainsimulation of electromagnetic wave of road radar[J]. Journal ofZhengzhou University(Engineering Edition),2005(1):28-32.
[21]冯德山.地质雷达二维时域有限差分正演[D].长沙:中南大学,2004.
[22] He Xianqi,Zhu Ziqiang,Lu Guangyin,et al. The FDTD modelingof GPR for tunnel inspection[C]//International Conference on In-formation Engineering and Computer Science,2009.
[23]范文娟,康迎宾.基于地质雷达的隧道正演模拟研究综述[J].吉林水利,2018(1):14-16.Fan Wenjuan,Kang Yingbin. Review of tunnel forward modelingbased on ground penetrating radar[J]. Jilin Water Conservancy,2018(1):14-16.
[2]朱叶艇,张桓,张子新,等.盾构隧道推进对邻近地下管线影响的物理模型试验研究[J].岩土力学,2016,37(S2):151-160.Zhu Yeting,Zhang Heng,Zhang Zixin,et al. Physical model teststudy on the influence of shield tunneling on adjacent undergroundpipelines[J]. Rock and Soil Mechanics,2016,37(S2):151-160.
[3]杜良法,李先军.复杂条件下城市地下管线探测技术的应用[J].地质与勘探,2007(3):116-120.Du Liangfa,Li Xianjun. Application of urban underground pipelinedetection technology under complicated conditions[J]. Geologyand Prospecting,2007(3):116-120.
[4]王振宇,程围峰,刘越,等.基于掌子面编录和地质雷达的综合超前预报技术[J].岩石力学与工程学报,2010,29(S2):3549-3557.Wang Zhenyu,Cheng Weifeng,Liu Yue,et al. Comprehensive ad-vance prediction technology based on palm surface cataloging andgeological radar[J]. Chinese Journal of Rock Mechanics and Engi-neering,2010,29(S2):3549-3557.
[5]王曦光.探地雷达在工程应用中的典型图像分析[J].北方交通,2016(5):138-142.Wang Xiguang. Typical image analysis of ground penetrating radarin engineering application[J]. Northern Traffic,2016(5):138-142.
[6]刘澜波,钱荣毅.探地雷达:浅表地球物理科学技术中的重要工具[J].地球物理学报,2015,58(8):2606-2617.Liu Lanbo,Qian Rongyi. Ground penetrating radar:an importanttool in superficial geophysical science and technology[J]. Journalof Geophysics,2015,58(8):2606-2617.
[7]陈军,赵永辉,万明浩.地质雷达在地下管线探测中的应用[J].工程地球物理学报,2005(4):260-263.Chen Jun,Zhao Yonghui,Wan Minghao. Application of geologicalradar in underground pipeline detection[J]. Journal of EngineeringGeophysics,2005(4):260-263.
[8] Ukaegbu I K,Gamage K A A. Ground penetrating radar as a con-textual sensor for multi-sensor radiological characterization[J].Sensors,2017(17):970-982.
[9]韩浩东,丁建芳,郭如军.隧道底部不良地质体的地质雷达探测数值模拟及应用[J].现代隧道技术,2014(1):159-163.Han Haodong,Ding Jianfang,Guo Rujun. Numerical simulationand application of ground penetrating radar for detecting unfavor-able geological bodies at the bottom of the tunnel[J]. Modern Tun-nel Technology,2014(1):159-163.
[10]杨艳青,贺少辉,齐法琳,等.铁路隧道衬砌地质雷达非接触检测模拟试验研究[J].岩石力学与工程学报,2011,30(9):1761-1771.Yang Yanqing,He Shaohui,Qi Falin,et al. Simulation test of GPRnon-contact detection on lining of railway tunnel[J]. Chinese Jour-nal of Rock Mechanics and Engineering,2011,30(9):1761-1771.
[11]李术才,刘斌,孙怀凤,等.隧道施工超前地质预报研究现状及发展趋势[J].岩石力学与工程学报,2014(6):1090-1113.Li Shucai,Liu Bin,Sun Huaifeng,et al. State of art and trends ofadvanced geological prediction in tunnel construction[J]. Journalof Rock Mechanics and Engineering,2014(6):1090-1113.
[12]刘新荣,刘永权,杨忠平,等.基于地质雷达的隧道综合超前预报技术[J].岩土工程学报,2015,37(S2):51-56.Liu Xinrong,Liu Yongquan,Yang Zhongping,et al. Tunnel com-prehensive advance forecasting technology based on geological ra-dar[J]. Journal of Geotechnical Engineering,2015,37(S2):51-56.
[13]刘新荣,舒志乐,朱成红,等.隧道衬砌空洞探地雷达三维探测正演研究[J].岩石力学与工程学报,2010,29(11):2221-2229.Liu Xinrong,Shu Zhile,Zhu Chenghong,et al. Forward study of 3-D ground penetrating radar for tunnel lining cavity[J]. Acta SinicaSinica,2010,29(11):2221-2229.
[14]李尧,李术才,徐磊,等.隧道衬砌病害地质雷达探测正演模拟与应用[J].岩土力学,2016(12):3627-3634.Li Yao,Li Shucai,Xu Lei,et al. Forward modeling and applicationof GPR detection for tunnel lining diseases[J]. Geomechanics,2016(12):3627-3634.
[15] Sun H,Pashoutani S,Zhu J. Nondestructive evaluation of concretebridge decks with automated acoustic scanning system and groundpenetrating radar[J]. Sensors,2018(18):235-247.
[16] Rodes J P,Gracia V P,Reguero A M. Evaluation of the GPR fre-quency spectra in asphalt pavement assessment[J]. Constructionand Building Materials,2015(96):181-188.
[17] Ge Debiao. Finite-difference time-domain method for electromag-netic waves[M]. Xi'an:Xidian University Press,2011.
[18] Yee K S. Numerical solution of initial boundary value problems in-volving maxwell equations in isotropic media[J]. Antennas Propa-gate,1966(14):302-307.
[19]薛桂霞,王鹏.探地雷达时域有限差分法正演模拟[J].物探与化探,2006(3):244-246.Xue Guixia,Wang Peng. Ground penetrating radar finite differencetime domain forward modeling[J]. Geophysical and GeochemicalExploration,2006(3):244-246.
[20]王复明,李嘉,蔡迎春.路面雷达电磁波的时域有限差分法模拟[J].郑州大学学报(工学版),2005(1):28-32.Wang Fuming,Li Jia,Cai Yingchun. Finite-difference time-domainsimulation of electromagnetic wave of road radar[J]. Journal ofZhengzhou University(Engineering Edition),2005(1):28-32.
[21]冯德山.地质雷达二维时域有限差分正演[D].长沙:中南大学,2004.
[22] He Xianqi,Zhu Ziqiang,Lu Guangyin,et al. The FDTD modelingof GPR for tunnel inspection[C]//International Conference on In-formation Engineering and Computer Science,2009.
[23]范文娟,康迎宾.基于地质雷达的隧道正演模拟研究综述[J].吉林水利,2018(1):14-16.Fan Wenjuan,Kang Yingbin. Review of tunnel forward modelingbased on ground penetrating radar[J]. Jilin Water Conservancy,2018(1):14-16.