A Review of Research on Leakage and Diffusion Characteristics of Buried Gas Pipelines

Abstract

As natural gas consumption grows and transmission networks expand, leakage from buried pipelines has become a significant threat to public safety, ecosystems, and climate stability. In recent years, the leakage accidents of buried gas transmission pipeline due to corrosion, natural disasters, third-party damage and other factors have occurred frequently, resulting in disastrous consequences such as fire and explosion, and aggravating the greenhouse effect of methane. Therefore, this paper focuses on the leakage and diffusion of buried gas transmission pipelines. It analyzes the current research progress and achievements in this field from three key dimensions: gas leakage, diffusion processes, and hazard assessment. Additionally, it identifies existing problems and challenges that need to be addressed. Future research should incorporate soil characteristic parameters as independent variables to establish formulas for calculating leakage rates under varying soil conditions. Improve the full-scale experimental platform and conduct multi-physics field coupling experiments to enhance the consistency between the experiments and the actual operating conditions of pipelines, especially considering factors such as soil characteristic parameters, providing data support and verification for the simulation research on leakage diffusion characteristics and hazard range prediction. Considering multiple factors, the characteristics and evolution laws of leakage accidents in buried gas transmission pipelines can be deeply studied, and a more accurate hazard prediction method can be developed by combining machine learning, data-driven methods, mechanistic simulation, and more. Additionally, enhance research on the leakage and diffusion characteristics of underground gas pipelines in specific scenarios to provide robust data support for identifying real leakage situations.

Topics & Concepts