温度梯度对多年冻土区石油迁移影响的研究

Experimental Study on the Influences of Temperature Gradient on the Migrating Process of Oil Contaminants in Permafrost Regions

通过对土体温度场分布、水分分布和石油总量分布的监测分析,研究了温度梯度作用对迁移过程的影响机制.试验结果表明,温度梯度作用通过影响石油污染物本身的物理性质、土颗粒对石油污染物的吸附作用和土体内水相的分布和相状态,影响了石油污染物的迁移过程.

A series of experiments were conducted in laboratory to simulate and study the migrating process of oil contaminants.The researches mainly focused on the effects of temperature gradient on the migrating process by monitoring and analyzing the temperature distribution,water distribution,total oil contents in different heights and oil components distribution in soil samples.The results show that the temperature gradient can influence the physical properties of oil contaminants,the adsorption effect of soil particles on oil contaminants,distribution and state of water phase in soil samples,and then it influences the migrating process.