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为解决工程建筑防电磁辐射屏蔽层接地性能差,影响电磁屏蔽效果的问题,用金属丝网和石墨导电混凝土制备面状电极,通过研究接地电阻随电极组合形式的变化,确定优化组合方案。相关实验表明,选用面状电极接地可使位于普通区域工程建筑的屏蔽层平均接地电阻为0.97Ω、位于高土壤电阻率区域工程建筑的屏蔽层平均接地电阻为7.88Ω,符合设计要求。
In order to solve the problem of poor earthing performance of electromagnetic radiation shield in engineering buildings and the influence of electromagnetic shielding effect, a planar electrode was prepared by using wire mesh and graphite conductive concrete. The optimal combination scheme was determined by studying the change of grounding resistance with the electrode combination. Relevant experiments show that the use of planar electrode grounding can make the average grounding resistance of the shield in the common area engineering building is 0.97Ω, and the average grounding resistance of the shield in the engineering building with high soil resistivity is 7.88Ω, which meets the design requirements.