Research on Water Supply Pipeline Leakage Monitoring Scheme Based on BOTDA

Leakage in water supply pipes is one of the most easily overlooked hazards in our daily life. Water supply pipes are usually laid underground. Even small-scale water supply pipe leaks can have a serious impact on our lives. Underground water supply pipe leaks can affect traffic, cause cracks in the ground and walls, and even damage buildings and production facilities, which is not conducive to the construction industry and the effective utilization of resources. At the same time, pipelines buried in shallow surfaces may deform due to settlement and other reasons, which in turn leads to pipeline rupture and causes a series of serious consequences. In order to quickly locate the site where the underground water supply pipeline leakage occurs and provide a basis for judging the leakage point of the pipeline, we have designed the following scheme. We set up a pipeline leakage simulation device to simulate the leakage of water supply pipelines. First, we laid optical fibers in three different directions of the water supply pipeline, and then buried the entire section of optical fibers in the soil. The Brillouin distributed Optical fiber sensing strain and temperature detection system based on BOTDA(Brillouin Optical Time Domain Analysis) was then used to simulate and verify the application of distributed optical fibers in pipeline leakage monitoring. Meanwhile, an experimental comparison system was built. And conduct continuous data monitoring of the system for a period of time, compare and analyze the data results to assist in verifying the effect of distributed optical fiber sensing applied to the monitoring of water supply pipelines.t.