【摘要】 地铁会对邻近或交叉的埋地钢质管道产生直流杂散电流干扰,影响其阴极保护系统的运行,加大判别阴极保护系统是否满足标准的难度。以华南区域某输油管道受新建地铁影响为例,监测了地铁运营前后,管道阴极保护电位的变化,并对被干扰管道采取了牺牲阳极排流的防护措施,有效改善了干扰段管道的阴极保护水平。更多还原

【Abstract】 Subway will cause DC stray current interference to adjacent or intersecting buried steel pipelines,affecting the operation of cathodic protection(CP)system,and increasing the difficulty of determining whether the cathodic protection system meets the standard.Taking an oil pipeline affected by a new subway in South China as an example,the change of the pipeline’s CP potential was monitored before and after the operation of the subway.The protective measures of sacrificial anode drainage were adopted for the disturbed pipeline,which effectively improved the cathodic protection level of the pipeline in the interference section.更多还原