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NAPLs污染物指进锋面形态的指间距离预测

李慧颖 杜晓明 伍 斌 杨 宾 马 妍 李 政 李发生

李慧颖, 杜晓明, 伍 斌, 杨 宾, 马 妍, 李 政, 李发生. NAPLs污染物指进锋面形态的指间距离预测[J]. 环境科学研究, 2013, 26(8): 844-850.
引用本文: 李慧颖, 杜晓明, 伍 斌, 杨 宾, 马 妍, 李 政, 李发生. NAPLs污染物指进锋面形态的指间距离预测[J]. 环境科学研究, 2013, 26(8): 844-850.
LI Hui-ying, DU Xiao-ming, WU Bin, YANG Bin, MA Yan, LI Zheng, LI Fa-sheng. Prediction of Finger Spacing for NAPLs Infiltrated in Porous Media[J]. Research of Environmental Sciences, 2013, 26(8): 844-850.
Citation: LI Hui-ying, DU Xiao-ming, WU Bin, YANG Bin, MA Yan, LI Zheng, LI Fa-sheng. Prediction of Finger Spacing for NAPLs Infiltrated in Porous Media[J]. Research of Environmental Sciences, 2013, 26(8): 844-850.

NAPLs污染物指进锋面形态的指间距离预测

基金项目: 国家环境保护公益性行业研究专项重大项目(201109017)

Prediction of Finger Spacing for NAPLs Infiltrated in Porous Media

  • 摘要: 选取4种不同性质的NAPLs(非水相流体)污染物,分别应用分形维数方法和毛细压力函数方法对NAPLs迁移过程中有效界面张力和指进过程中指间距离的大小进行预测,同时建立二维可视化砂箱模型,模拟污染物在多孔介质中的非稳态指进迁移过程,获得指进迁移形态影像75幅. 结果表明,与试验观测值比较,对于相同迁移过程中的指间距离,毛细压力函数方法预测误差绝对值介于1%~93%,分形维数方法预测误差绝对值介于2%~25%,分形维数方法的预测误差小于毛细压力函数方法. 毛细压力函数方法对指间距离的预测随着NAPLs密度的增加而增大,对DNAPLs(重非水相流体)的预测误差明显增加,更适用于预测密度与水的密度相差不大的物质;分形维数方法的预测值与观测值呈显著线性相关(R2=0.957),相比于传统毛细压力函数方法,分形维数方法对指间距离的预测更准确,更适合用来预测不同密度NAPLs污染物的指进距离参数.

     

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出版历程
  • 收稿日期:  2013-04-22
  • 修回日期:  2013-05-09
  • 刊出日期:  2013-08-25

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