成品油在土壤中扩散的数值模拟分析

摘要

In order to analyze rules of product oil pipeline leakage and diffusion and improve accident emergency control ability,the leakage process of product oil leakage in soil is simulated and analyzed by using the software COMSOL,and the diffusion rule of product oil leakage in soil is got.The results show that the diffusion radius of product oil in soil is proportional to the leakage pore diameter and the soil porosity.The bigger the leakage pore diameter is,the bigger the oil diffusion radius is;the greater the soil porosity is,the greater the oil diffusion radius is.If the diffusion radius cannot be detected,it can be roughly estimated according to the diffusion time.Then the scope of the leakage accident can be generally determined,which provides reference for the accident treatment.%为了分析成品油管道泄漏扩散规律,提高事故的应急控制能力,利用COMSOL软件对成品油在土壤中的泄漏过程进行模拟分析,得出了成品油管道发生泄漏后在土壤中的扩散规律.模拟结果表明,成品油在土壤中的扩散半径与泄漏口径、土壤孔隙率成正比例关系,泄漏口径越大,油品扩散半径越大;土壤孔隙率越大,油品扩散半径越大.在无法检测扩散半径的情况下可根据扩散时间进行粗略估算,大体确定事故泄漏扩散范围,为事故处置提供参考.