Abstract
Purpose. The purpose of the work is to simulate the process of corrosion formation on a degassing pipeline using Solid Works and COMSOL Multiphysics 5.6 software products. Methodology. Development of a mathematical model for establishing corrosion zones of a steel degassing gas pipeline and modeling the corrosion process in a mine environment using the SolidWorks and COMSOL Multiphysics 5.6 software package. Results. It has been established that the degassing network of mines is constantly under the influence of mechanical-electrochemical interaction, which manifests itself during longitudinal deformations of the rocks at the bottom of the mine workings. The high level of corrosion processes in underground pipelines is the result of the interaction of the metal, which acts as an electrode, with groundwater, which acts as an electrolyte; at the same time, the determining factors in the corrosion process are the electrical conductivity of the soil and deformation processes in pipelines. The primary corrosion protection of underground degassing pipelines can be considered as the improvement of methods for monitoring and maintaining the technical condition of mine degassing gas pipelines to eliminate mechanical deformations and the effects of aggressive groundwater. Scientific novelty. It has been established that the high level of corrosion processes in underground pipelines is the result of the interaction of the metal, which acts as an electrode, with groundwater, which acts as an electrolyte. At the same time, the determining factors of the corrosion process are the electrical conductivity of the rocks at the bottom of the mine workings and deformation processes in pipelines. Practical implication. The reasons for the low service life of underground degassing pipelines under the constant influence of mechanical and electrochemical corrosion have been determined. Keywords: degassing, vacuum underground gas pipeline, methane-air mixture, monitoring, corrosion, throughput.
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