| 摘要 |
A replaceable deep anode system for the cathodic protection of underground metallic structures is disclosed. The system includes an anode casing received in a drilled hole. The casing has an electrically non-conductive upper portion and a substantially incorrodible electrically conductive lower portion preferably comprising a steel piping having a coating of a conductive polymer. A selectively insertable anode is received in the casing contiguous to the lower portion to define an active anode area. Electrically conductive material received in the casing adjacent the anode and about the casing lower portion provides a primarily electronic current path from the anode to the drilled hole wall. The casing provides an integral anode housing for selective removal and resupply of anodes as may be needed over a period of time. The conductive polymer preferably comprises a polymer concrete including conductive carbon elements.
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