基于GIS的网格化雷电灾害风险评估模型及其应用

GIS-Based Gridding Risk Assessment Model of Lightning Disasters and Its Application

在分析雷电灾害风险评估技术发展现状以及大片区化工厂、建筑群雷电灾害风险特点的基础上,提出了基于地理信息处理技术的网格化雷电灾害风险评估模型,建立包含高势层及其梯度、土壤散流层及其梯度、雷击密度层、直击雷防护效率层、电气电子设备抗雷击风险值、雷击燃爆风险值、人员密集度等指标在内的多层网格化雷电灾害风险评估模型,并以某化工厂的雷电灾害风险评估为例,对模型的应用做了示例,对模型在实践应用过程中可能遇到的问题、模型未来可能改进的方向做了讨论。

Based on the analysis of the development status of lightning risk assessment technology and the features of lightning risk assessment of large chemical factories and building groups,agirding lightning risk assessment model is established based on GIS technology,which contains height potential and its gradient,soil resistivity and its gradient,lightning density,lightning protection efficiency,electrical and electronic equipment lightning risk,lightning explosion risk,and population density factor.A chemical factory is taken as an example to show the application of the model.