提出并研制了一种基于预埋式指示单元的地网腐蚀状态监测装置：将中空充气密封状态的腐蚀单元连接在接地网上，与接地网导体一同埋入土壤发生同种腐蚀反应，当接地导体腐蚀深度等于腐蚀单元厚度时，腐蚀单元被蚀穿变成非密封状态，检测装置的密封性能可判断腐蚀单元的腐蚀状态。在实验室对研制的检测装置进行了可行性试验，并根据装置尺寸及参数建立对应的仿真模型。结果表明：该装置可明显反映腐蚀单元的腐蚀状态，且仿真结果与试验结果吻合度较好，该装置可实现免开挖接地网腐蚀状态的监测功能。

A corrosion monitoring device for grounding net based on a pre-embedded indicator unit was proposed and developed. A corrosion unit with hollow inflatable sealed state was connected to the grounding net, and the same kind of corrosion reaction occurred when the grounding net conductor was also buried in the soil. When the corrosion depth of the grounding conductor was equal to the thickness of the corrosion unit, the corrosion unit was perforated by corrosion and became unsealed, and the corrosion state of the corrosion unit was judged by the sealing performance of the detection device. The feasibility test of the developed detection device was carried out in the laboratory, and the corresponding simulation model was established according to the device size and parameters. The results show that the device could clearly reflect the corrosion state of the corrosion unit, and the simulation results were in good agreement with the test results. The device can realize the function of monitoring the corrosion state of the grounding net without excavation.