雷电流对地下设施的破坏机理探讨  

Discussion on the Mechanism of Underground Facilities Failure due to Lightning Current

作　　者：任艳[1] 李家启[2] 

机构地区：[1]重庆市防雷中心,重庆401147 [2]重庆市气象局,重庆401147

出　　处：《地下空间与工程学报》2013年第S2期2064-2067,共4页Chinese Journal of Underground Space and Engineering

摘　　要：本文通过对雷电流入地穿透深度、雷电流入地散流电场以及雷击电磁脉冲等三个方面进行分析,探讨雷电流对地下设施的破坏机理,并结合雷电流频谱特性,对不同下垫面的雷电流入地穿透深度、雷电流入地散流电场进行了计算,得到不同下垫面雷电流入地穿透深度值及入地散流电场值,对于科学的开展地下设施雷电防护,降低地下设施雷电灾害损失,提高地下设施防雷安全保障具有重要的意义。Based on the analysis of three aspects: the lightning current underground penetration depth,lightning current underground diffuser electric field and lightning electromagnetic pulse,this paper discusses the mechanism of underground facilities failure due to lightning current. And combined with the spectral characteristic of lightning current,the lightning current underground penetration depth and diffuser electric field on the different underlying surfaces are calculated,and their values are obtained. It has great significance for the reasonable development of the lightning protection,the reduction of lightning disaster loss and the improvement of lightning protection safety of underground facilities.

关 键 词：雷电流 地下设施 破坏机理 

分 类 号：TU895[建筑科学]