摘要
采用室内模拟的方法,研究了不同含量石油污染条件下土壤容重、孔隙度、含水率和渗透性能的变化。结果表明,土壤中低含量的石油污染物对容重和孔隙度的影响不显著,当土壤中石油污染物含量超过30g/kg以后,土壤容重随含油量的增加而显著降低;当土壤中石油污染物含量超过50g/kg以后,土壤孔隙度随含油量的增加而显著增大。石油污染物能显著降低土壤的渗透性能和含水率,随着石油污染物数量的增加,土壤渗透系数达到稳定的时间也随之延长。
The changes of bulk density,porosity,moisture percentage and permeability are studied at different petroleum contaminant content in soil by using the method of indoor simulation.The results indicate that the bulk density and porosity are not changed at lower content of the petroleum contaminant,the bulk density decreases significantly with the increase of petroleum content when it exceeds 30g/kg,while the porosity increases significantly with the increase of petroleum content when is exceeds 50g/kg.Petroleum contaminant can significantly reduce the permeability and moisture percentage,and the stable time of filtration coefficient is delayed with the increase of petroleum content in soil.
基金
中国石油天然气集团公司项目(2014D-4603-01)
关键词
石油污染
土壤
容重
孔隙度
渗透系数
petrolem pollution
soil
bulk density
porosity
filtration coefficient
