灾害学2018，Vol.33Issue(1)：1-4,4.DOI:10.3969/j.issn.1000-811X.2018.01.001
考虑空间效应的毒气扩散当量危害研究
Study on the Equivalent Hazard of Toxic Gas Diffusion Considering Spatial Effect
摘要
Abstract
In order to reveal the influence of space dimension over the distribution of the toxic gas diffusion equivalent,the author referred to the evaluation criteria of gas hazard degree and used the uniform mass concentration model and the simulation method to do the analysis.Based on the toxic load criteria as well as factors such as spatial concentration of hazard gas and exposure time,the author constructed gas diffusion equivalent hazard model.Then,the author simulated gas diffusion under different dimensions and different exposure time,revealed the influence mechanism of space effect on toxic gas diffusion equivalent and conducted quantitative analysis of hazard degree of gas diffusion in the limited space.The simulation results showed that,with the increasing of space dimension,the equivalent value of the toxic gas diffusion increased at first and then decreased,and when the size of the space reaches a certain value,the hazard value of the gas equivalent reaches the peak value.In the neighborhood area of the peak point,size of the space is inversely proportional to the growth rate and the decay rate.关键词
毒气扩散/当量危害/均一质量浓度/毒物负荷准则/空间效应Key words
toxic gas diffusion/equivalent hazard/uniform mass concentration/toxic load criterion/spatial effect分类
资源环境引用本文复制引用
郑霞忠,田丹,晋良海,谢雪凌,陈雁高..考虑空间效应的毒气扩散当量危害研究[J].灾害学,2018,33(1):1-4,4.基金项目
国家自然科学基金项目(51379110) （51379110）
