Qualitative analysis of the factors affecting the transport properties of light non-aqueous phase liquid (LNAPL) and prediction of the extent of contamination are significant for identifying source areas and developing treatment strategies. This paper investigates the effects of initial leakage rate, media particle size and heterogeneity on the migration distribution of LNAPL using two-dimensional visualization experiments as well as numerical simulations of T2VOC. Image analysis, spatial moments and kinetic analysis are used to quantify the migration behavior of LNAPL. The results indicated that the migration distance and contaminated area of LNAPL in porous media were affected by leakage conditions and media structure. Meanwhile, the prediction equations for the migration behavior of large-scale LNAPL leakage in real sites are modified based on the experimental results by combining the numerical simulations at different scales. It is obtained that the equations suitable for predicting the leakage behavior of LNAPL in a real environment.

中文翻译：

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多孔介质中 LNAPL 迁移行为定量评估的实验和数值模拟研究


对影响轻非水相液体 （LNAPL） 传输特性的因素进行定性分析和预测污染程度对于确定源区和制定处理策略具有重要意义。本文使用二维可视化实验以及 T2VOC 的数值模拟研究了初始泄漏率、介质粒径和非均质性对 LNAPL 迁移分布的影响。图像分析、空间矩和动力学分析用于量化 LNAPL 的迁移行为。结果表明，LNAPL 在多孔介质中的迁移距离和污染面积受泄漏条件和介质结构的影响。同时，结合不同尺度的数值模拟，在实验结果的基础上，对实际场地大规模 LNAPL 泄漏迁移行为的预测方程进行了修改。得到的方程适用于预测 LNAPL 在真实环境中的泄漏行为。