不同矿藏地区雷电参数分布特征及对比分析

Distribution Characteristics of Lightning Parameters in Different Mineral Deposits and Its Comparative Analysis

摘要:

为研究雷电参数与矿藏之间的关系，根据雷电定位系统2013年1月至2022年12月的监测资料，对四川凉山州5个不同矿藏地区（镍矿、铁矿、铜矿、钨矿和锡矿）的地闪频次、雷电流幅值、雷电日等雷电参数分布特征进行了统计分析。结果表明，不同矿藏地区的地闪频次、雷电流幅值、雷电日差异较为明显，在年变化、月变化和日变化中：镍矿地区的地闪频次相较于其余4个矿藏地区最为突出，其余矿藏地区的地闪次数也有明显的差异；不同矿藏地区的雷电流幅值有明显差异，其中钨矿的雷电流平均幅值最大，镍矿的雷电流平均幅值最小；不同矿藏地区的雷电日也有明显的差异，镍矿地区10年的平均雷电日最大，铜矿和钨矿地区次之，铁矿和锡矿地区最小。

Abstract:

In order to study the relationship between lightning parameters and mineral deposits, statistical analysis is carried out for the distribution characteristics of lightning parameters such as cloud-to-ground lightning frequency, lightning current amplitude and lightning day in five different mining areas (nickel, iron, copper, tungsten and tin) in Liangshan prefecture of Sichuan, based on the monitoring data from January 2013 to December 2022 by the lightning positioning system. The results show that there are significant differences in cloud-to-ground lightning frequency, lightning current amplitude and lightning day in different mining areas. In terms of annual, monthly and daily changes, the cloud-to-ground lightning frequency in nickel mining areas is the most prominent compared to the other four mining areas, and there are also significant differences in the number of ground flashes in other mining areas. The lightning current amplitude varies significantly among different mining areas, in which tungsten ore has the highest average amplitude and nickel ore has the lowest average amplitude. There are also significant differences in lightning days between different mining areas, in which nickel mining areas has the highest average lightning days over the past 10 years, followed by copper and tungsten mining areas, and iron and tin mining areas has the lowest average lightning days.