土工基础

土工基础 ›› 2019, Vol. 33 ›› Issue (6): 717-719.

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井中磁法在深埋管线探测中的应用

介绍了井中磁法的基本原理。采用井中磁法对金属管线、含铁磁性材料的雨污水管道、有孔可穿入强铁磁棒的非金属管线进行了探测，取得了良好的效果。通过对探测结果的分析，证实井中磁法适应含铁磁性材料的深埋管线探测，探测精度与测孔的平面位置有关，而与管线埋深无关；探测误差均能满足工程需要及相关规范要求。总结了井中磁法探测的工作步骤、探测的主要误差来源、减小误差的技术措施及探测方法的优缺点，对提高含铁磁性材料的深埋管线探测的效率、减小误差具有一定的指导意义。   

  1. (上海新地海洋工程技术有限公司，上海 200083)
  • 收稿日期:2019-10-11 修回日期:2019-10-23 出版日期:2019-12-28 发布日期:2019-12-28
  • 作者简介:吕 明（1975-），男，助理工程师，研究方向为岩土工程测试。

Application of The Borehole Magnetic Survey Method in the Deeply Buried Pipelines Detection

This paper introduces the basic principles of the borehole magnetic survey method. The borehole magnetic survey method was used to detect metal pipelines, stormwater and sewer pipelines that containing ferromagnetic materials and nonmetallic pipelines with holes through which strong ferromagnetic bars can be inserted and have achieved good results. Through the analysis and the study of detection results, it is proved that the borehole magnetic survey method is feasible for the detection of deeply buried pipelines containing ferromagnetic materials, and the detection accuracy is related to the plane position of the measured hole, but not related to the buried depth of the pipelines. The detection errors of this method can meet the engineering needs and relevant specification requirements, and the detection results can provide scientific basis for engineering design and construction. This paper summarizes the procedures of the borehole magnetic detection pipelines, the main sources of errors, the technical measures to reduce errors and the advantages and disadvantages of the detection methods. It also provides references for improving the detection efficiency of deeply buried pipelines containing ferromagnetic materials and reducing errors.   

  1. (Shanghai Xindi Ocean engineering Technology Co., Ltd., Shanghai 200083)
  • Received:2019-10-11 Revised:2019-10-23 Online:2019-12-28 Published:2019-12-28

摘要： 介绍了井中磁法的基本原理。采用井中磁法对金属管线、含铁磁性材料的雨污水管道、有孔可穿入强铁磁棒的非金属管线进行了探测，取得了良好的效果。通过对探测结果的分析，证实井中磁法适应含铁磁性材料的深埋管线探测，探测精度与测孔的平面位置有关，而与管线埋深无关；探测误差均能满足工程需要及相关规范要求。总结了井中磁法探测的工作步骤、探测的主要误差来源、减小误差的技术措施及探测方法的优缺点，对提高含铁磁性材料的深埋管线探测的效率、减小误差具有一定的指导意义。

关键词: 井中磁法, 深埋管线, 误差来源, 技术措施, 指导意义

Abstract: This paper introduces the basic principles of the borehole magnetic survey method. The borehole magnetic survey method was used to detect metal pipelines, stormwater and sewer pipelines that containing ferromagnetic materials and nonmetallic pipelines with holes through which strong ferromagnetic bars can be inserted and have achieved good results. Through the analysis and the study of detection results, it is proved that the borehole magnetic survey method is feasible for the detection of deeply buried pipelines containing ferromagnetic materials, and the detection accuracy is related to the plane position of the measured hole, but not related to the buried depth of the pipelines. The detection errors of this method can meet the engineering needs and relevant specification requirements, and the detection results can provide scientific basis for engineering design and construction. This paper summarizes the procedures of the borehole magnetic detection pipelines, the main sources of errors, the technical measures to reduce errors and the advantages and disadvantages of the detection methods. It also provides references for improving the detection efficiency of deeply buried pipelines containing ferromagnetic materials and reducing errors.

Key words: Borehole Magnetic Survey Method, Deep Buried Pipelines, Sources Of Errors, Technical Measures, References

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