低频电磁法在城市地下管线探测中的应用  

Application of the low-frequency electromagnetic method in urban underground pipeline detection

作　　者：罗明伟 陈庆华 LUO Mingwei;CHEN Qinghua(The 6th Geological Brigade,Guangdong Geological Bureau,Jiangmen 529000,China;Guangzhou Institute of Urban Planning,Survey and Design,Guangzhou 510000,China)

机构地区：[1]广东省地质局第六地质大队,广东江门529000 [2]广州市城市规划勘测设计研究院,广东广州510000

出　　处：《经纬天地》2024年第6期67-70,共4页Survey World

基　　金：广东省基础与应用基础研究基金项目(项目编号:2021A1515012645)。

摘　　要：随着城市化进程的加快,城市地下管线的建设与管理变得愈加重要。针对连海路(金瓯路-新港路)改扩建工程,采用低频电磁法对地下管线进行探测,以实现高精度与高效率的管线识别。采用LFEM-2000探测仪及RD8000型管线探测仪,通过优化信号处理算法、提高发射器频率和功率、结合多频率探测技术以及智能化设备应用,显著提高了管线探测的精度与可靠性。探测结果显示:改造后的低频电磁法在位置精度上从±10 cm改善至±5 cm,深度精度从±15 cm降低至±10 cm,所有金属管线的识别率达到100%。研究成果为城市地下管线管理提供了科学依据,并为今后的基础设施建设提供了借鉴。With the acceleration of urbanization process,the construction and management of urban underground pipelines have become increasingly important.The renovation and expansion project of Lianhai Road(Jin'ou Road to Xingang Road),was focused on in this study to detect underground pipelines with the low-frequency electromagnetic method so as to achieve high-precision and high-efficiency pipeline identification.In the study,LFEM-2000 detector and RD8000 pipeline detector were used to significantly improve the accuracy and reliability of pipeline detection by the ways as optimizing signal processing algorithms,increasing transmitter frequency and power,combining multi-frequency detection technology,and applying intelligent equipment.The detection results showed that the modified low-frequency electromagnetic method improved the position accuracy from±10 cm to±5 cm,reduced the depth accuracy from±15 cm to±10 cm,and achieved a 100%recognition rate for all metal pipelines.The research results provide scientific basis for the management of urban underground pipelines and offer reference for future infrastructure construction.

关 键 词：低频电磁法 城市地下管线 管线探测 

分 类 号：TU990.3[建筑科学—市政工程]