Abstract: With the indepth development and utilization of urban lands, the accurate locating of underground pipelines has become a primary problem to be resolved; Firstly, this paper summarizes the principles, applicable conditions and specific operation methods of various pipeline detection methods. On this basis, various methods such as the direct method, the electromagnetic induction, the ground penetrating radar methods and the excavation verification are comprehensively applied to detection of underground pipelines in a port area of Caofeidian. Methods of effectively identifying the type, quantity, buried depth and other information of underground pipelines, the existing problems in the detection process are analyzed, and reasonable suggestions and relevant quantitative indexes are proposed. A number of underground pipeline detection methods are summarized, which can provide reference for similar projects.

Key words: Underground Pipeline Detection, Electromagnetic Induction Method, Ground Penetrating Radar Method, Pipeline Spatial Distribution