Nonexcavation Localization Method for Buried PE Pipes Based on Elastic Wave Reflection Imaging and the BPA Method

Since polyethylene (PE) pipes are widely used in urban infrastructure development, their precise localization is paramount. The research on the nonexcavation localization of buried PE pipes using acoustic methods holds significant practical significance due to the expensive costs and permit issues associated with traditional excavation-based localization methods. A method based on elastic wave reflection for positioning buried PE pipes is proposed in this article to address the challenges of nonexcavation localization of buried PE pipes. First, fundamental theoretical analysis and finite element simulation were carried out to investigate the propagation and reflection of elastic waves in the soil-PE pipe-coupled system, guiding subsequent experiments. Second, an electromagnetic-driven excitation source is designed to locate buried PE pipelines based on the elastic wave signals reflected by the pipeline. The excitation source is driven by Gaussian pulse-modulated sine waves. Finally, the back projection algorithm (BPA) imaging method generates cross-sectional images of buried PE pipes. The potential economic and environmental benefits of this method are substantial, as it promises to streamline the process of pipeline inspection and maintenance, leading to cost savings. Furthermore, the research paves the way for future advancements in nonexcavation technologies, contributing to the sustainable development of urban infrastructure. In conclusion, this study provides a practical and innovative solution for the nonexcavation positioning of buried PE pipes, influencing the widespread application of acoustic methods in infrastructure management.