浅谈广州地铁车站接地设计

地铁车站接地电阻的大小是实现接地系统功能的关键所在,且影响接地系统的投资规模。广州地铁接地形式以人工接地为主,人工接地网由水平接地体、垂直接地体、接地引出装置等部分组成。一般情况下,接地网设置在维护结构内的站台底板下。由于天河客运站为高土壤电阻率并受地理环境限制,经过技术经济比较,采用车站站厅顶板上方布置接地网的设计方案。

Grounding Design of Guangzhou Metro Station

The value of the grounding resistance of metro station is the key point which can affect and realize the function of grounding system, and it is also affect the investment scale of grounding system.The Guangzhou metro station is mainly artificial grounding net, which is made of level grounding body and vertical grounding and grounding devices.Usually, the grounding net is set in the maintenance structure under the platform floor.On account of the metro station of Tianhe coach terminal station high soil resistivity and geographical environment restriction, by the scheme comparison of various measures, we finally choose the design that the grounding net is set on the above of the station hall roof.