%0 Journal Article
%T 基于雷达技术的大埋深管线探测应用研究<br>Study on the Application of Radar Technology in the Detection of Deep Buried Pipelines
%A 王伟
%J Advances in Geosciences
%P 1221-1234
%@ 2163-3975
%D 2022
%I Hans Publishing
%R 10.12677/AG.2022.129118
%X 用探地雷达探测地下管线是一种利用电磁波探测浅层地下介质结构的地球物理方法技术。探地雷达无损检测技术在综合地下管线检探测领域得到了越来越广泛的研究及应用。首先，介绍了电磁波探测原理，利用时域有限差分法，对大深度管线模型进行了反射波正演模拟，分析不同介电常数下深部管线波场特征及规律；其次对华能北京热电厂深部管线进行探测，通过对雷达信号数据精细处理，有效压制了探测区域内多种干扰源信号，获得了探测区内直径2 m、埋深3~5 m非金属管线地下分布情况，结合实例对深部管线探地雷达结果进行分析总结其规律特征，并通过开挖施工验证了探测结果的准确性，为后续开挖工程顺利实施提供了安全保障。<br />
The detection of underground pipelines by GPR is a geophysical method using electromagnetic wave to detect the structure of shallow underground medium. GPR nondestructive testing tech-nology has been more and more widely used in the field of comprehensive underground pipeline detection. Firstly, the principle of electromagnetic wave detection is introduced, and the reflection wave forward modeling of pipeline model with large depth is carried out by using the finite difference time domain method. The wave field characteristics and laws of deep pipelines under different dielectric constants are analyzed. Secondly, the detection of deep pipelines in Huaneng Beijing thermal power plant is carried out. Through the precise processing of radar signal data, a variety of interference source signals in the detection area are effectively suppressed, and the underground distribution of non-metallic pipelines with a diameter of 2 m and a buried depth of 3~5 m in the detection area is obtained. Combined with an example, the results of deep pipeline GPR are analyzed The accuracy of the detection results is verified by the excavation construction, which provides a safety guarantee for the subsequent excavation project.
%K 探地雷达，正演模拟，深部地下管线，雷达信号<br>GPR
%K Forward Modeling
%K Deep Underground Pipeline
%K GPR Signal
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=55780