摘要
Abstract
In this paper, the detection of lightning arresters in 100 colleges, primary and secondary schools in Beijing from 2010 to 2016 was analyzed. The results showed that the frequencies of lightning protection hidden dangers in 100 primary and secondary schools were the following: uninstalled surge protective device (damage) accounted for 73％, unearthed internal (outside) equipment was 62％,equipotential connection (potential connection network) accounted for 41％, lightning belt binding phenomenon accounted for 30％, no direct lightning protection device accounted for 21％; overhead flying line, the arrester belt lodging, unused cross connection and lightning belt failing to protect the building completely (not in the protection range of direct lightning) accounted for 17％, respectively; the number of the earth connecting cable (ground resistance overproof, oversize, or disconnection) and the breaking of the lightning belt each accounted for 11％. Hence, based on the requirements of the standard, safe,feasible, and pertinent rectification opinions and countermeasures are put forward to provide a reference for schools to improve the campus lightning protection facilities and strengthen their lightning protection work.关键词
北京市/校园/防雷隐患/对策Key words
Beijing/campus/hidden dangers of lightning protection/countermeasures分类
天文与地球科学
