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中国农学通报 ›› 2016, Vol. 32 ›› Issue (6): 145-150.doi: 10.11924/j.issn.1000-6850.casb15090080

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

雷暴天气下建筑物周围电场畸变区域的研究分析

张 谦,柴 健,黄克俭   

  1. (湖北省防雷中心,武汉 430074)
  • 收稿日期:2015-09-21 修回日期:2015-11-02 接受日期:2015-11-11 出版日期:2016-03-07 发布日期:2016-03-07
  • 通讯作者: 柴 健
  • 基金资助:
    湖北省雷电灾害防御科研专项“雷击风险评估导则”(FL-Z-201403)。

Electric Field Distortion Region Around Buildings in Thunderstorm

Zhang Qian, Chai Jian, Huang Kejian   

  1. (Hubei Lightning Protection Center, Wuhan 430074)
  • Received:2015-09-21 Revised:2015-11-02 Accepted:2015-11-11 Online:2016-03-07 Published:2016-03-07

摘要: 为了探究在雷暴发生时建筑物周围电场畸变区域的规律,利用Integrated Engineering Software电磁暂态仿真软件,模拟分析雷暴云及建筑物结构对周围电场畸变特征的影响。结果表明:当雷暴云过境时,群体建筑物遭受雷击的概率会减小,这主要是因为群体建筑物之间的屏蔽效应,改变了周围区域的电场畸变程度,降低了产生上行先导的概率和遭受雷击的概率。对于单体建筑而言,当雷暴云过境时,建筑物周围电场畸变区域呈半球形状,电场的畸变程度与建筑物的高度呈线性相关,高度越高,畸变区域越大,将导致前方流注扩展的区域变大,从而增加了下行先导发生的概率,这也是越高的物体易遭受雷击的原因。

关键词: 贵妃鸡, 贵妃鸡, 屠宰性能, 肌肉品质, 相关分析

Abstract: In order to investigate the change law of electric field distortion region around buildings in thunderstorm, the effect of thunder cloud and building structure on the electric field distortion region around the buildings was simulated by IES (electromagnetic transient simulation software). The results showed that lightning stroke probability could be reduced for group buildings in thunderstorm, because of the shield effect which changed the degree of electric field distortion around the buildings, and reduced the probability of upward leader and lightning stroke in thunderstorm. For single building, the area of electric field distortion was a hemisphere and there was a linear correlation between the degree of electric field distortion and the height of the building. The higher the building was, the greater the distortion region would be. That could lead to a greater extended region of the front discharge, and the probability of upward leader could also be increased, which was the reason for higher objects to be easily stroked by lightning.

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