Subway station earthing terminal is in accordance with strict national standards for design, because there are strict requirements, so the subway station terminal application and protection is very important.

1, subway station project is for one hundred project, and each station grounding network are set up at the station below the main structure, once implemented, after the completion of basic does not have the right conditions for change.

2, according to the provisions of the state, to the subway station adopts the earthing materials, under the premise of meeting the other grounding requirement, but should also consider the effect of corrosion, and according to detailed geological exploration data, generally in the soil under the station of chengdu metro has certain corrosion resistance, and consider the subway itself can increase the corrosion of ground material to a certain extent, compared with other than grounding material, copper material has good corrosion resistance, can satisfy the actual life demand of the subway engineering in one hundred.

3, in view of the subway station earthing terminal adopts copper material is not easy to protect, has been in the subsequent to ground are considered in the construction drawing design requirements of security and protection measures, put forward "at the end of the project construction, the grounding wire should be properly kept, with cloth after sealed by cement, in order to avoid loss, fracture".

To sum up, to meet the requirements of protection and current carrying, Elinker Electric experts said subway station grounding terminals must be copper materials.