摘要
基于最少时间最大概率原理,定量分析当雷暴云在高层建筑物附近移动时落雷点以及落雷区域的概率分布,提出临界高度(Zr)、临界半径(ρr)以及概率系数(Er0)的概念。在此基础上,给出高概率落雷区域划分指标,即:Er0>1的区域为危险区域,Er0<1的区域为安全区域,Er0=1的区域为临界区域。同时,从滚球法计算雷电保护范围的局限性出发,基于概率理论定量给出一个计算雷电保护范围的数学模型。
According to the maximum probability theory, the probability distribution of lightning point and region is quantitatively analyzed when the thunderstorm is moving near the high-rise buildings. The concepts of Critical height (Zr), Critical range (ρr) and Probability effectiveness coefficient (Er0) are advanced. On this basis the indexes of high probability lightning region are given: the area in where Er0〉1 is dangerous; the area in where Er0〈1 is safe and the area in where Er0=1 is critical. Simultaneously, a mathematical model of calculating lightning protection range is put forward based on the probability theory considering the limitation of Rolling Sphere Method.
出处
《暴雨灾害》
2010年第1期85-88,共4页
Torrential Rain and Disasters
基金
国家自然科学基金(60862001)
广西信息与通讯技术重点实验室基金(10908)
广西教育厅基金(200808MS004)共同资助
关键词
滚球法
雷电防护范围
落雷区域
概率系数
Rolling sphere method
Lightning protection range
Lightning region
Probability coefficient