探地雷达对道路地下空洞精细识别研究
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摘要
地下空洞引起道路塌陷的发生,常与排水管网老化破损有关。利用探地雷达对道路地下病害体进行检测,并充分应用管线普查成果数据,能有效排除异常干扰,提高病害体识别精度和准确率。本文以佛山市某道路排水井周边地下病害体检测工程为例,结合管网数据对探地雷达信号数据进行精细分析和研究,确定空洞的范围及发育程度,并对其回填工程质量进行评估。
The pipeline data contains basic attribute information such as coordinates,buried depth and diameter. The occurrence of road collapse caused by underground voids is often related to the aging and damage of drainage network. Ground penetrating radar( GPR) is used to detect the underground diseases of roads,and the results of pipeline survey are fully used to eliminate abnormal interference and improve the accuracy and accuracy of disease identification. Taking the underground disease detection project around a road drainage well in Foshan City as an example,this paper makes a detailed analysis and study of GPR signal data combined with pipeline network data,determines the scope and development degree of the voids,and evaluates the quality of the backfilling project.
The pipeline data contains basic attribute information such as coordinates,buried depth and diameter. The occurrence of road collapse caused by underground voids is often related to the aging and damage of drainage network. Ground penetrating radar( GPR) is used to detect the underground diseases of roads,and the results of pipeline survey are fully used to eliminate abnormal interference and improve the accuracy and accuracy of disease identification. Taking the underground disease detection project around a road drainage well in Foshan City as an example,this paper makes a detailed analysis and study of GPR signal data combined with pipeline network data,determines the scope and development degree of the voids,and evaluates the quality of the backfilling project.
引文
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[10]冯德山，王洪华，戴前伟．基于无单元Galerkin法探地雷达正演模拟[J]．地球物理学报，2013,56(1):298-308.
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[12]郭士礼，许磊，李修忠．探地雷达在公路路面变形沉降检测中的应用[J]．地球物理学进展，2018,33(3):1213-1217.
[13]廖红建，朱庆女，昝月稳，等．基于探地雷达的高铁无砟轨道结构层病害检测[J]．西南交通大学学报，2016,51(1):8-13.
[14]谢源，薛云白，蒋云魁，等．探地雷达正演模拟与引水隧洞实测资料解释[J]．地球物理学进展，2014(4):1961-1965.
[15]许献磊，杨峰，乔旭，等．基于GPR的城市道路地下病害差值检测方法研究[J]．科学技术与工程，2016,16(12):83-88.
[2] LIU Y,LI C C,MOU Y G. Finite-difference numerical modeling of any even-order accuracy[J]. OGP,1998,33(1):1-10.
[3] SHAARI A,AHMAD R S,CHEW T H. Effects of antenna-target polarization and target-medium dielectric contrast on GPR signal from non-metal pipes using FDTD simulation[J]. NDT&E International,2010,43(5):403-408.
[4] ZHU Z Q,PENG L X,LU G Y,et al. Borehole-GPR numerical simulation of full wave field based on convolutional perfect matched layer boundary[J].Journal of Central South University,2013,20(3):764-769.
[5]蔡晖．探地雷达在隧道岩溶探测中的应用[J]．路基工程，2014(1):175-178.
[6]曾昭发．探地雷达方法原理及应用[M]．北京:科学出版社，2006.
[7]丁亮，韩波，刘润泽．混凝土结构缺陷检测的探地雷达资料波场反演方法[J]．地球物理学进展，2012,27(1):376-385.
[8]冯德山，陈承申，王洪华．基于混合边界条件的有限单元法GPR正演模拟[J]．地球物理学报，2012,55(11):3774-3785.
[9]冯德山，戴前伟，瓮晶波．时域多分辨率法在探地雷达三维正演模拟中的应用[J]．中南大学学报(自然科学版)，2007,38(5):975-980.
[10]冯德山，王洪华，戴前伟．基于无单元Galerkin法探地雷达正演模拟[J]．地球物理学报，2013,56(1):298-308.
[11]葛德彪，闫玉波．电磁波时域有限差分方法[M]．西安:西安电子科技大学出版社，2002.
[12]郭士礼，许磊，李修忠．探地雷达在公路路面变形沉降检测中的应用[J]．地球物理学进展，2018,33(3):1213-1217.
[13]廖红建，朱庆女，昝月稳，等．基于探地雷达的高铁无砟轨道结构层病害检测[J]．西南交通大学学报，2016,51(1):8-13.
[14]谢源，薛云白，蒋云魁，等．探地雷达正演模拟与引水隧洞实测资料解释[J]．地球物理学进展，2014(4):1961-1965.
[15]许献磊，杨峰，乔旭，等．基于GPR的城市道路地下病害差值检测方法研究[J]．科学技术与工程，2016,16(12):83-88.