武夷山生态定位研究站野外仪器防雷研究

LIGHTNING PROTECTION OF FIELD INSTRUMENTS IN ECOSYSTEM LONGTERM RESEARCH STATION IN WUYISHAN MOUNTAIN

武夷山生态站试验地的地形地质特点为山势陡峭、表土薄、下层为砾石、土壤电阻率高,因此用于野外连续监测的仪器容易遭受雷电袭击,鉴于此本研究采用以隔离为主,分散、疏泄、入地为辅,多级阻隔消减、逐级衰减雷电感应过电压的防雷方案保护野外仪器,阐述了该方案的工作原理,并对其应用环境及其局限性进行了分析和讨论,以期为我国森林生态定位站野外监测仪器的防雷安置提供借鉴。

Because the topographic and geological features of ecosystem long-term research station in Wuyishan Mountain are high and steep,thin top soil,pebbly sublayer and high soil resistivity,the continuous monitoring instruments used in the field are easily destroyed by lightning.We studied a lightning protection plan what was isolation firstly and dispersed into earth secondly,and then subduction by obstructed multilevelly and cascade reducing lightning overvoltage.Moreover,we expounded principle of this plan and discussed its application environment and limits.