Abstract
Buried pipelines are an essential component of the urban infrastructure of modern cities. Traditional buried pipes are mainly made of metal materials. With the development of material science and technology in recent years, non-metallic pipes, such as plastic pipes, ceramic pipes, and concrete pipes, are increasingly taking the place of pipes made from metal in various pipeline networks such as water supply, drainage, heat, industry, oil, and gas. The location technologies for the location of the buried metal pipeline have become mature, but detection and location technologies for the non-metallic pipelines are still developing. In this paper, current trends and future perspectives of detection and location of buried non-metallic pipelines are summarized. Initially, this paper reviews and analyzes electromagnetic induction technologies, electromagnetic wave technologies, and other physics-based technologies. It then focuses on acoustic detection and location technologies, and finally introduces emerging technologies. Then the technical characteristics of each detection and location method have been compared, with their strengths and weaknesses identified. The current trends and future perspectives of each buried non-metallic pipeline detection and location technology have also been defined. Finally, some suggestions for the future development of buried non-metallic pipeline detection and location technologies are provided.
Highlights
Buried pipelines are important parts of urban infrastructure and are essential to the survival and development of the cities [1, 2]
The objective of this paper is to provide state-of-theart of detection and location methods of non-metallic pipelines in various scenarios
Xu et al [74] established a three-dimensional model of a buried liquid filled pipeline to study the location technologies of buried pipeline based on acoustic propagation characteristics; Muggleton et al [75] studied axisymmetric wave in a plastic pipe filled with liquid and used it to detect the location of the buried non-metallic pipeline
Summary
Buried pipelines are important parts of urban infrastructure and are essential to the survival and development of the cities [1, 2]. The detection and location technologies of the buried metallic pipelines have become mature [11, 12]. There are many potential detection and location methods for buried non-metallic pipelines. The pipe excitation method applies sound at a specific frequency directly to the pipe, the receiver detects and locates the non-metallic pipeline based on the acoustic wave intensity received. The elastic wave method uses ground vibration exciters to generate elastic waves, and locate buried non-metallic pipelines according to the characteristics of the acoustic echo. Point vibration measurement is to apply vertical harmonic excitation at several points along the ground and locate buried non-metallic pipelines according to different resonances. The research trends and perspectives for new detection and location technologies of buried non-metallic pipelines are discussed
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