为了研究土壤电阻率和阳极埋设方式对长输管线阴极保护电位分布的影响, 建立了长输管线阴极保护的简单物理模型, 利用边界元算法的管单元法建立相应的数学模型, 采用Matlab编程进行模拟求解。首先设计试验验证模拟结果的正确性, 然后分别设定了不等的电阻率以及不同的阳极埋设方式进行模拟计算。结果表明, 不同的土壤电阻率和不同的阳极埋设方式均会对长输管线阴极保护电位的分布产生很大影响。

In order to study the influence of soil resistivity and anode placement manner on cathodic protection potential distribution of long distance pipelines, a physical model of the long distance pipeline cathodic protection potential distribution was established, the mathematic model of the potential distribution defined by the tube element method of the boundary element algorithm, and the Matlab programming tools were used to solve the model. To verify the correctness of the simulation results firstly and then simulation calculation was performed under different conditions of resistivity and anode placement manner. The results show that the soil resistivity and anode placement manner have great impact on the cathodic protection potential distribution of long distance pipelines.