Abstract: In view of the problem of different oil pipelines leakage, using the finite volume method to build the three dimensional flow and mass transfer mathematical model of the soil porous media around underground pipeline, by the CFD soft to numerical simulate the range of different oil distribution of underground and the earth’s surface when petrol, diesel fuel or crude oil pipeline leakage, the simulation results showed that when the time was the same, the volume of diesel fuel leakage was the most, and the spread was more 20% than petrol or crude oil. After 2 hours’ leakage, the diffusion rates of both underground and surface cases tended to be stable. The simulation diffusion scopes of leakage oil had a guiding significance for repair work of contaminated soil.

Key words: Underground pipeline, Different oil, Leakage, Diffusion, Simulation 

摘要：  针对埋地管道输送不同油品发生泄漏问题, 采用有限容积法建立埋地管道周围土壤多孔介质的三维流动传质数学模型, 通过C F D软件分别模拟了汽油、 柴油、 原油管道下方发生泄漏后, 不同油品在地下及地表的扩散范围。模拟结果表明, 在泄漏时间相同时, 柴油在土壤中的扩散范围最大, 其扩散范围比汽油大2 0%左右, 而汽油和原油的扩散范围基本相等; 当泄漏时间大于2h时, 不同油品在地下、 地表扩散速率基本趋于稳定。泄漏油品扩散范围的模拟对被污染土壤的修复工作具有指导意义。

关键词: 埋地管道, 不同油品, 泄漏, 扩散, 模拟