Cathodic Protection Potential Distribution Simulation for Pipeline Buried in Discontinuous Permafrost

More and more pipelines buried in discontinuous permafrost are constructed in the west and north of China, many challenges and difficulties are met in the design of cathodic protection of these pipelines. Numerical simulation is conducted to predict the cathodic protection potential distribution of pipelines buried in discontinuous permafrost, which shows significant differences for various seasons and anode grounds, such as zinc ribbon anodes, deep ground anodes and shallow horizontal anodes. The calculated results were compared with laboratory test data and could provide reference for the cathodic protection design of pipelines buried in discontinuous permafrost.