探地雷达探测地下管线的机理和应用研究
摘要:地下管线无论其内部充填空气、水或其它介质,其介电常数、电导率等物性参数与周围介质均存在明显差异,具备探地雷达探测的地球物理前提。从探地雷达探测地下管线的极性分析入手,通过建立金属和非金属管线的正演数值模型,研究探地雷达电磁波在金属管线、非金属管线和组合管线中的传播机制。结合实际探测的地下管线探地雷达特征图谱,从反射波波形、极性、同相轴、电磁波能量吸收和衰减等方面分析探地雷达探测地下管线的波谱特征,建立探地雷达探测金属和非金属管线的识别方法,为准确探测地下管线起到很好的指导作用。
Abstract:The dielectric constant and electical conductivity of underground pipeline are obviously different with surrounding medium,regardless of its internal filling air,water or other medium.It is prerequisite with the ground penetrating radar for detecting underground pipelinse.This paper analyzes the ground penetrating radar for detecting underground pipelines polarity.Through the establishment of metal and non-metallic pipeline forward numerical model, it focuses the transimission mechanism of GPR electromagnetic wave in metal pipeline,nonmetal pipeline. Combined with the actual detection of underground pipeline ground-penetrating radar feature mapping,it analyzes the spectrum characteristics from the reflection waveform,polarity,phase axis,electromagnetic wave energy absorption and attenuation.Finally,it establishes the identificaion method of GPR detecting metal and non-metallic pipeline.The results play a very good guidance for accurately detecting underground pipelines.
中文标题:
探地雷达探测地下管线的机理和应用研究
Research on Mechanism and Analysis of Underground Pipeline Detection with Ground Penetrating Radar
作者:
苏兆锋,陈昌彦,肖敏
Su Zhaofeng,Chen Changyan,Xiao Min
作者简介:苏兆锋,1980年生,男,汉族,山东郓城人,硕士,2006年毕业于东华理工大学地球探测与信息技术专业,工程师,主要从事工程物探、岩土工程综合测试、测绘等方面研究工作。E-mail:dk123456@163.com
通讯地址:
北京市勘察设计研究院有限公司, 北京 100038
BGIEngineeringConsultantsLTD,Beijing100038,China
中图分类号:P631.325
doi:10.3969/j.issn.1007-2993.2013.04.008
出版物:岩土工程技术
收稿日期:2013-01-24
关键词:探地雷达,数值模拟,波谱特征,传播机制,识别方法
Key words:ground penetrating radar,numerical simulation,spectral characteristics,communication mechanism,identificaion method
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基金项目:
基金项目: 北京市科技计划课题项目资助(D101100049510003)
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