Prepreg repair layer structure for pipelines with defects

The invention provides a prepreg repair layer structure for pipelines with defects, which relates to the technical field of pipeline systems. The structure is characterized in that the periphery of a pipeline (1) is wrapped in a prepreg potential-corrosion prevention layer (2), a prepreg enhancement layer (3) and an anti-corrosion layer (4) one by one from inside to outside. As the structure prepares prepreg with no solvent, the prepreg contains no volatile components, so that inside pore defects of composite materials caused by the presence of solvent is avoided, and the performance and use reliability of the composite materials are ensured. Therefore, the prepreg repair layer structure for the pipelines with the defects has the advantages of high quality and uniformity, long lifespan and high reliability.