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劈雷闪电是一种目然放电现象,在雷电形成的瞬间其电压约为1亿～10亿伏特,电流可达20～25万安培,最高可达60～70万安培。闪电时放出的热量一般可达摄氏3万度,使周围的空气体积骤然膨胀,从而产生巨大的雷声。如此之高的电压、电流、热量对人体会造成严重危害。野外工作人员稍有不慎就会发生人身伤亡事故。在人遭雷击的瞬间,电流迅速通过人体,使呼吸中枢麻痹,心室纤颤或心跳骤停,脑组织缺氧,直到休克死亡。同时,温度极高的电火花也会给人体造成烧伤。为了防止雷击,野外工作人员遇雷电时应注意自我保护。
Lightning lightning is an obvious phenomenon of discharge, lightning in the formation of the moment of its voltage is about 100000000000000 volts, the current up to 20 ~ 250,000 amperes, up to 60 to 700,000 amperes. Lightning when the release of heat generally up to 30,000 degrees Celsius, so that the surrounding air volume suddenly expanded, resulting in a huge thunder. Such a high voltage, current, heat on the human body can cause serious harm. Field staff accidentally happen to personal injury and death. The moment lightning strikes, the current rapidly through the body, so that the respiratory center paralysis, ventricular fibrillation or cardiac arrest, brain tissue hypoxia, until the shock died. At the same time, the extremely high temperature spark will also cause burns to the human body. In order to prevent lightning strikes, field staff should pay attention to self-protection in case of thunder and lightning.