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雷击是带电云块向地面放电击中某一目标的自然气象灾害现象。雷击容易引起火灾,破坏建筑物或造成人畜伤亡事故。因此,了解和掌握一些雷击知识,对预防火灾具有重要意义。 雷击引起火灾主要有四种形式:一是直接雷击;二是感应雷击;三是球状闪电雷击;四是雷电直接燃爆油气。 一、直接雷击起火 当浓黑的雷雨云移到近地面上空时,地面附近的异性电荷(一般为负电荷)随之聚集,使电场增强,此时
Lightning strike is a phenomenon of natural meteorological disasters that a charged cloud reaches a certain target when discharged to the ground. Lightning strikes easily lead to fire, destruction of buildings or human and animal injuries. Therefore, to understand and master some knowledge of lightning is of great significance in preventing fire. There are four main forms of fire caused by lightning: one is direct lightning; the other is lightning induced lightning; the other is lightning lightning; and the other is lightning and direct explosion of oil and gas. First, the direct lightning strike fire When the thick black thunderstorm clouds moved to the ground near the ground when the opposite side of the opposite charge (usually negative charge) will be gathered to make the electric field increased, this time