摘要
高斯模型的稳定气象条件假设在真实事故场景下难以成立,且对地形因素考虑也被过度简化,导致对于毒害性气体泄漏进行扩散模拟的结果与实际相差较大.通过开发变气象条件下的改进高斯烟团叠加模型(UWF-SPM);构建实时气象采集硬件系统获取事故场景下的实时气象信息,结合GIS技术实现在事故发生地空气动力粗糙度参数(Z0)的确定;编程实现毒害性气体泄漏扩散浓度分布实时模拟,减小模拟结果和实际事故后果之间的差距,更加有效地辅助该类事故的应急救援决策工作.
The assumption of stable weather condition in Gauss model is hard to match the real accident scenario, and influence of terrain is oversimplified, which causes obvious difference between simulation results and real accident ones. To overcome the disadvantage, UWF-SPM （Unstable wind field-superposing puff model） was developed to simulate the concentration distribution under unstable weather conditions with the weather station system built to gather real-time weather data, and a method was developed to obtain aerodynamic roughness length （Z0） with GIS technology. Based on these technologies, the software was programmed to simulate the real-time concentration distribution in toxic gas dispersion, thus it could sufficiently reduce the difference between simulation results and real accident ones, and assist emergency rescue of such accidents.
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2009年第3期23-28,共6页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家“十一五”科技支撑计划项目(2006BAK01B03-3)
关键词
毒害性气体
实时气象信息
地理信息系统
事故模拟
应急救援
toxic gas
real-time weather data
geographic information system
accident simulation
emergency rescue
