井中磁梯度法在上海某深埋燃气金属管道精准探测中的应用  

APPLICATION OF MAGNETIC GRADIENT METHOD IN WELLS TO THE ACCURATE DETECTION OF A DEEPLY BURIED GAS METAL PIPELINE IN SHANGHAI

作　　者：管竹青 GUAN Zhuqing(Shanghai Yangxu Construction Engineering Inspection Technology Co.,Ltd.,Shanghai 201600,China)

机构地区：[1]上海阳旭建设工程检测技术有限公司,上海201600

出　　处：《资源信息与工程》2025年第2期48-51,共4页Resource Information and Engineering

摘　　要：井中磁梯度法是一种可以在钻孔中通过测量附近具有一定埋深的金属管道形成的磁场梯度进而推断管道位置的方法,具有探测精准、操作便捷等技术优势。本文以上海某深埋燃气金属管道为例,通过在6个探测区域完成的79个钻孔井中磁梯度法测量,得出该高压燃气管道在申嘉湖高速北侧(北泖泾至规划望塔路)管顶埋深为1.20~6.35 m,验证了井中磁梯度法在深埋金属管道精准探测的有效性,其垂向探测精度可达0.05 m。该成果既为该区后续线路改迁工程设计施工提供了资料,也为开展类似管线探测和研究工作提供参考。The magnetic gradient method in wells is a method that can infer the location of the pipeline by measuring the magnetic field gradient formed by the nearby metal pipeline with a certain depth of burial in the drilling,which has the technical advantages of accurate detection and convenient operation.Taking a deeply buried gas pipeline in Shanghai as an example,through the magnetic gradient method measurements in 79 boreholes completed in 6 detection areas,this paper concludes that the buried depth of the top of the pipeline in the north side of the Shenjiahu Expressway(from Beimao Jing River to planned Wangta Road)is 1.20-6.35m,which verifies the effectiveness of the magnetic gradient in the well method in the accurate detection of deeply buried metal pipelines with a vertical detection accuracy of 0.5 m.The results provide information for the design and construction of the subsequent line relocation projects in this area,and provide a reference for similar pipeline detection and research work.

关 键 词：井中磁梯度法 埋深 金属管道 精准探测 

分 类 号：P631[天文地球—地质矿产勘探]