基于三维GIS的气体扩散应急分析研究与设计  

Research and Design of Gas Diffusion Emergency Analysis Based on 3D GIS

作　　者：权西瑞 王凯 王博 王小飞 张新利 QUAN Xirui;WANG Kai;WANG Bo;WANG Xiaofei;ZHANG Xini(Shaanxi Geomatics Center,Ministry of Natural Resources,Xi′an 710054,China;The Second Topographic Surveying Brigade,Ministry of Natural Resources,Xi′an 710054,China)

机构地区：[1]自然资源部陕西基础地理信息中心,陕西西安710054 [2]自然资源部第二地形测量队,陕西西安710054

出　　处：《测绘与空间地理信息》2023年第7期82-84,88,共4页Geomatics & Spatial Information Technology

摘　　要：基于三维GIS系统,实现危化品气体扩散模拟、应急辅助决策和应急分析流程等功能,采用高斯模型算法,结合影响因子,计算出一定范围格网内的浓度值,结合三维粒子渲染技术将气体扩散的范围和粒子浓度分布情况在三维场景中呈现出来,自动查询统计受影响区域内的防护目标和危险源信息,旨在为突发性气体泄漏事故提供科学、精准、可视化的数据和平台支撑。Based on 3D GIS system,this paper constructs the functions of dangerous chemicals gas diffusion simulation,emergency auxiliary decision-making and emergency analysis process,uses the Gaussian model algorithm and combined with the influence factors to calculate the concentration value in the grid within a certain range,and presents the gas diffusion range and particle concentration distribution in 3D scene combined with 3D particle rendering technology,and automatically queries and counts the protection target and hazard source information in the affected area,in order to provide scientific,accurate and visual data and platform support for sudden gas leakage accidents.

关 键 词：三维GIS 高斯模型 气体扩散 应急分析 

分 类 号：P208[天文地球—地图制图学与地理信息工程]