基于高斯烟羽模型的铁路易燃气体泄漏扩散分析

Analysis of Leakage Diffusion of Flammable Gas in Railway Transportation Based on Gaussian Plume Model

以丙烷的运输为例,采用了高斯烟羽模型,分析了危险货物发生泄漏事故后的扩散过程,获得了丙烷在不同大气稳定类别条件下的致死区域和致伤区域半径情况;建立了多泄漏源危险货物扩散模型,分析了危险货物车辆布置方式对多泄漏源危险货物扩散的影响,结果表明应优先采用集中布置的方式,车辆数对扩散浓度有影响,扩散浓度的增加率高于车辆数的增加率.

Based on Gaussian plume model, the transportation of propane is taken as an example to analyze the diffusion process of hazardous goods after leakage accident, and the radius of fatality region and injury region of propane is obtained under different atmospheric stable conditions. The leakage diffusion model of hazardous goods of multi-leak source is established, and the influence of the layout of vehicles of hazardous goods on the diffusion of the hazardous goods of multi-leak source is analyzed. The result shows that the centralized layout should be preferentially applied, for the number of vehicles effects the diffusion concen- tration and the increase rate of the diffusion concentration is higher than the vehicle number.