探地雷达检测公路结构层裂缝实用方法研究
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摘要
在简要介绍探雷达基本原理及裂缝在雷达剖面上的波组特征基础上,从垂直裂缝数学模型开始,由简单到复杂,按照理论分析数值模拟——物理模拟——现场试验这一流程对探地雷达检测裂缝的理论、方法和实际应用效果进行了系统的分析研究。总结出由单一均匀介质到多层均匀介质等不同情况下裂缝的波组特征规律和检测裂缝的基本方法。由公路工程探测实践表明数值模拟、物理模拟和检测应用具有很好的一致性。采用探地雷达检测公路结构层中的垂直裂缝具有充分的理论依据,实践上是切实可行性的。探地雷达检测裂缝时应选取足够小的横向采样点距和适当主频的天线,并采用合理的处理参数对雷达资料进行分析处理,才能得到直观、可靠的裂缝检测结果。该方法可以对公路结构层中隐含的裂缝进行准确定位,为高速公路路况监控和养护提供了一种新的检测手段。
Based on the principle of the ground-prospecting radar and the wave group features of the cracks taking on the radar section plan,the theory,method and the application of cracks detection by ground penetrating radar is researched.The research started from the mathematical model of the vertical crack and followed the process from simple to complex,including numerical simulation,physical simulation and spot validation.The wave group characteristic pattern of the cracks of multiple cases from single even media to multi-layer even media is summarized.Then the method used for detecting the cracks was developed.The detection practice of the highway shows the nice consistency among the numerical simulation,physical simulation and the spot validation.Sufficient theoretic research and practical evidence proved that it is feasible to adopt the ground penetrating radar to detect the vertical cracks in the structural layer of the highway.When using the ground penetrating radar to detect the cracks,the transverse sample interval should be small enough and the main frequency for the antenna should be appropriate,and the processing parameters for analyzing and processing the radar data should be reasonable,thus the intuitional and reliable results for the crack detection can be attained.The method here can locate the cracks hiding in the structural layer of the highway correctly and provides a new detection way for monitoring and maintaining the highway.
Based on the principle of the ground-prospecting radar and the wave group features of the cracks taking on the radar section plan,the theory,method and the application of cracks detection by ground penetrating radar is researched.The research started from the mathematical model of the vertical crack and followed the process from simple to complex,including numerical simulation,physical simulation and spot validation.The wave group characteristic pattern of the cracks of multiple cases from single even media to multi-layer even media is summarized.Then the method used for detecting the cracks was developed.The detection practice of the highway shows the nice consistency among the numerical simulation,physical simulation and the spot validation.Sufficient theoretic research and practical evidence proved that it is feasible to adopt the ground penetrating radar to detect the vertical cracks in the structural layer of the highway.When using the ground penetrating radar to detect the cracks,the transverse sample interval should be small enough and the main frequency for the antenna should be appropriate,and the processing parameters for analyzing and processing the radar data should be reasonable,thus the intuitional and reliable results for the crack detection can be attained.The method here can locate the cracks hiding in the structural layer of the highway correctly and provides a new detection way for monitoring and maintaining the highway.
引文
[1]邓世坤.探地雷达野外工作参数选择的基本原则[J].工程地球物理学报,2005,2(5):323-329.
[2]张山,陆曙明.地质雷达检测公路面层厚度的可靠性和必要性[C]∥道路工程优秀论文集.南京:江苏省公路学会,1998.
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[6]王秉中.计算电磁学[M].北京:科学出版社,2002.
[7]葛德彪,闫玉波.电磁波时域有限差分法[M].西安:西安电子科技大学出版社,2002.
[8]何兵寿,等.FDTD法在地质雷达正演模拟中的应用[J].中国煤田地质,1999(4):81-83.
[9]YEE.A finite-element solution for the transient electromagnetic responseof an arbitrary two-dimension resistivity distribution[J].Geophysics,1986,51:1 450-1 461.
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[11]TAFLOVE A.Review of FD-FD numrical modeling of electromagneticwaves scattering and radar cross section[J].IEEE,1989,77(5):682-693.
[12]李修忠.探地雷达检测裂缝理论研究与实际应用[D].武汉:中国地质大学(武汉),2005.
[13]漆新民.电磁场论[M].武汉:武汉大学出版社,1998.
[14]邓居智.地质雷达在公路路面检测中的应用[J].华东地质学院学报,1993,22(1):40-44.
[15]潘卫育,向文俊,等.地质雷达在高等级公路工程中的应用[J].公路,2004(7):140-145.
[16]赵华阁,宋元华.道路探地雷达厚度检测技术的应用与实践[J].河南交通科技,2000,20(2):30-32.
[17]朱希安,苑守成.探地雷达在公路质量无损检测中的应用研究[J].煤田地质与勘探,2002,30(5):47-51.
[18]牛一雄.地质雷达在公路建设中的应用[J].物探与化探,1996,2(2):116-123.
[19]李大心.公路工程质量的探地雷达检测技术[J].地球科学,1996,21(6):661-664.
[20]赵建三,郭云开,等.公路路基工程质量无损检测综合技术试验研究[J].长沙铁道学院学报,2003,21(1):34-38.
[21]孙洪星,李凤明.探地雷达高频电磁波传播衰减机理与应用实例[J].岩石力学与工程学报,2002,21(3):413-417.
[22]李成香,强建科,王建军,等.地质雷达在公路裂缝检测中的应用[J].工程地球物理学报,2004,1(1):282-286.
[23]刘江平,陈超,许顺芳,等.垂直裂缝的波场特征及实例[J].工程地球物理学报,2004,1(1):55-58.
[24]聂立新,等.垂直裂缝方位的确定[J].油气井测试,2000,9(2):6-14.
[2]张山,陆曙明.地质雷达检测公路面层厚度的可靠性和必要性[C]∥道路工程优秀论文集.南京:江苏省公路学会,1998.
[3]李大心.探地雷达方法与应用[M].北京:地质出版社,1994.
[4]杨天春,吕绍林,王齐仁.探地雷达检测道路厚度结构的应用现状及进展[J].物探与化探,2003,27(1):79-82.
[5]陆基孟.地震勘探原理[M].北京:石油大学出版社,1996.
[6]王秉中.计算电磁学[M].北京:科学出版社,2002.
[7]葛德彪,闫玉波.电磁波时域有限差分法[M].西安:西安电子科技大学出版社,2002.
[8]何兵寿,等.FDTD法在地质雷达正演模拟中的应用[J].中国煤田地质,1999(4):81-83.
[9]YEE.A finite-element solution for the transient electromagnetic responseof an arbitrary two-dimension resistivity distribution[J].Geophysics,1986,51:1 450-1 461.
[10]CANGELLARIS A C.Numerical stability and numerical dispersion of acompact 2-D/FDTD method used for the dispersion analysis of waveguids[J].IEEE,Microwave and Guided Wave Letters,1993,3(1):3-5.
[11]TAFLOVE A.Review of FD-FD numrical modeling of electromagneticwaves scattering and radar cross section[J].IEEE,1989,77(5):682-693.
[12]李修忠.探地雷达检测裂缝理论研究与实际应用[D].武汉:中国地质大学(武汉),2005.
[13]漆新民.电磁场论[M].武汉:武汉大学出版社,1998.
[14]邓居智.地质雷达在公路路面检测中的应用[J].华东地质学院学报,1993,22(1):40-44.
[15]潘卫育,向文俊,等.地质雷达在高等级公路工程中的应用[J].公路,2004(7):140-145.
[16]赵华阁,宋元华.道路探地雷达厚度检测技术的应用与实践[J].河南交通科技,2000,20(2):30-32.
[17]朱希安,苑守成.探地雷达在公路质量无损检测中的应用研究[J].煤田地质与勘探,2002,30(5):47-51.
[18]牛一雄.地质雷达在公路建设中的应用[J].物探与化探,1996,2(2):116-123.
[19]李大心.公路工程质量的探地雷达检测技术[J].地球科学,1996,21(6):661-664.
[20]赵建三,郭云开,等.公路路基工程质量无损检测综合技术试验研究[J].长沙铁道学院学报,2003,21(1):34-38.
[21]孙洪星,李凤明.探地雷达高频电磁波传播衰减机理与应用实例[J].岩石力学与工程学报,2002,21(3):413-417.
[22]李成香,强建科,王建军,等.地质雷达在公路裂缝检测中的应用[J].工程地球物理学报,2004,1(1):282-286.
[23]刘江平,陈超,许顺芳,等.垂直裂缝的波场特征及实例[J].工程地球物理学报,2004,1(1):55-58.
[24]聂立新,等.垂直裂缝方位的确定[J].油气井测试,2000,9(2):6-14.
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