地下管线作为城市基础设施的重要组成部分,随着城市建设和发展,探测地下管线也越来越得到有关部门的重视,逐渐成为工程开工前必不可少的工作之一。作为实践工作者,地下管线探测理论的深入研究则显得同样重要,只有先了解其原理,才能更好地应用于实践。本文从电磁法理论开始,用公式逐步推导应用电磁法探测地下管线的基本理论,根据推导的公式,得出了地下管线在外界电磁场的作用下产生的磁场其空间的分布规律,并结合实例介绍了探测方法的有效性,另外对于在实践过程中遇到的疑难问题,作者从理论结合实践的角度提出了其解决的有效手段。在本文结论部分,作者总结了多年的实践经验,给出地下管线探测的一些经验与心得。 Underground pipeline as an important part of urban infrastructure, with the urban construction and development, exploration of underground pipelines have also been increasingly concerned by the relevant departments, and gradually become one of the essential work before the project started. As a practical worker, the in-depth study of the theory of underground pipeline exploration is equally important. Only by understanding its principles can we apply it to practice better. Based on the theory of electromagnetic method, the basic theory of using electromagnetic method to detect underground pipelines is derived step by step. According to the deduced formula, the spatial distribution of magnetic field generated by underground pipelines under the external electromagnetic field is obtained. In addition, for the difficult problems encountered in the process of practice, the author puts forward effective solutions to the problem from the perspective of theory and practice. In the conclusion of this article, the author summarizes many years of practical experience and gives some experience and experience of underground pipeline exploration.