EFFECT OF STRAY CURRENT OF URBAN RAIL ON BURIED PIPELINE CORROSION
城市轨道交通杂散电流对埋地管线腐蚀的影响

Outlines the fundamental of the pipeline corrosion caused by stray current.With respect to the characteristics of stray current and the inspection circumstance for urban rails system,a home-made equipment was developed for measuring the pipe-to-soil potential and soil potential gradient of the gas pipelines at Shanghai.The results showed that the pipe-to-soil potential fluctuated in a range of about 600 mV and the soil potential gradient was up to 49.8 mV/m,which was in accordance with the subway operation ...