Deep well anode is a forced current cathodic protection anode installation method widely used at home and abroad. Compared with the shallow buried anode bed, the deep well anode bed has the advantages of small footprint, low grounding resistance, good current distribution, less interference to the surrounding buried metal structure, stable working environment, and no damage. Therefore, it is especially suitable for forced current cathodic protection in cities and areas with dense factory networks. However, compared with the shallow buried anode bed with the same current output capacity, the deep well anode bed has a higher cost, so people have higher expectations for its operating efficiency and service life. In recent years, my country has built many deep well anode beds and gained certain experience. During use, the anode cable is interrupted, and the uneven dissolution of the anode causes its joints and ends to break prematurely. Vapor resistance often occurs during use, which makes the anode bed’s service life shorter. Abroad deep well anode bed has a long service life. At present, the alternative deep well anode bed has been developed, which is also our future development direction.

Another important advantage of using the deep well anode design is that the ground area required for installation is limited, because all anodes are stacked vertically in a borehole, and the installation can be done in a very limited surface area. This advantage is not only reflected in congested areas with limited area, but also in the feasibility of installing deep well anode systems. This is because the current discharge area is located deeper in the earth, and the anode can be far away from the structure.