Effect Mechanism Analysis of Explosion Impact on Physical and Chemical Properties of Steel Pipeline.

Pipeline is the main way of oil and gas transportation; however, pipelines easily produce internal corrosion under the laying environment, transmission medium, and other factors and even lead to an explosion accident. The cause and process inversion of pipeline explosions is important in the failure analysis of oil and gas pipelines. This study examines the impact of explosions on the physicochemical properties of steel pipelines, focusing on the general mechanisms of pipeline failure in oil and gas transportation. Based on a case study of a pipeline burst caused by corrosion in a mountainous area, the influence of the law of shock load on the physical and chemical properties of pipelines is analyzed. The physicochemical properties of the residual samples are tested and analyzed to validate the failure analysis results. Finite element simulation is employed to reproduce the pipeline burst failure process, and the results are consistent with the field data. The findings provide insights into the failure mechanisms of oil and gas pipelines, offering guidance for the safe operation and maintenance of such pipelines in various environments.