Discussion on DC Stray Current Drainage Technology of Apron Pipeline
In the operation process of airport subway,due to the electrical impedance of return rail,traction current will produce pressure drop in the return rail,and there is potential difference between the return rail and the ground,which will lead to a certain leakage current of the return line to the tunnel track bed,the surrounding soil medium and the buried pipeline on the apron,resulting in stray current.When the stray current flows out of the pipeline,it will have a serious electrochemical corrosion effect on the pipeline,and eventually lead to pipeline corrosion perforation leakage.Therefore,it is of great significance to study the influence of stray current on apron pipeline to improve the reliability of safe and stable operation of apron pipeline.
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