分析了地铁直流杂散电流对埋地燃气管道干扰腐蚀的机理与影响，并简述了埋地燃气管道直流杂散电流干扰腐蚀的防护方法。

The mechanism and influence of subway stray current corrosion on buried metal pipeline is analyzed, and the measure of disturbing stray current corrosion is narrated briefly.

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通过建立露天煤矿电气化铁道简化的均匀分布参数模型，分析了直流杂散电流的分布规律和影响直流杂散电流的主要因素， 并提出了抑制杂散电流应采取的有效措施。

The electric railway opencast mine is simplified to a even distribution parameter mode in this paper. By this mode, the distribution and main influencing factors of DC leak current are analyzed.

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通过加速试验方法研究了直流电流作用下混凝土筛余砂浆的溶蚀性能，并建立了其与广州地铁工程混凝土在杂散电流下的溶蚀性能之间的关系。

The dissoluble corrosion of Guangzhou metro engineering concrete in direct current was studied by an accelerated DC dissolving test of the residue mortar and correlating it with concrete.

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