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首页> 外文会议>American Society of Civil Engineers(ASCE) International Conference on Pipeline Engineering and Construction v.2; 20030713-20030716; Baltimore,MD; US >Unexpected Patterns of Seepage from Underground Contaminant Leakage into freezing soil
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Unexpected Patterns of Seepage from Underground Contaminant Leakage into freezing soil

机译：地下污染物渗入冻结土壤的意外渗漏模式

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The leakage from a buried pipeline or reservoir in freezing or frozen ground will not follow the same path through the soil as leakage in unfrozen ground. In freezing soil, both the cold temperatures themselves and the cold temperature gradients play very significant roles in the contaminant transport. This research describes the paths of ethylene glycol (antifreeze) injected below ground into silt before, during or after freezing at the depth of injection is identified, and these are contrasted in one case to the path followed by injected water. When ethylene glycol is injected before freezing, subsequent freezing draws the contaminant vertically to the soil surface. When it is injected after freezing, it is contained, at least over that duration, in the frozen ice rich soil. When it is injected as freezing is occurring, its path is long and inclined upward, moving far from the point of injection. Water injected similarly during freezing does not travel far from the point of injection before being frozen into place. Repeating the centrifuge freezing experiments with, for example, a petroleum product which offers its own temperature related complications to the resulting transport, would lead to different patterns and would be easily accomplished using this research method.
机译：在冻结或冻结的地面中，来自地下管道或水库的​​泄漏与未冻结的地面中的泄漏路径不同。在冰冻的土壤中，低温本身和低温梯度在污染物输送中都起着非常重要的作用。这项研究描述了在确定注入深度的冻结之前，过程中或之后，地下注入泥沙中的乙二醇（防冻剂）的路径，并与注入水的路径形成了对比。当在冷冻前注入乙二醇时，随后的冷冻将污染物垂直吸入土壤表面。冷冻后注入时，至少在此期间内，它包含在冷冻的富含冰的土壤中。当注射发生冻结时，其路径较长且向上倾斜，远离注射点。在冷冻期间类似地注入的水在冷冻到位之前不会远离注入点。例如，对石油产品重复进行离心冷冻实验，该石油产品会为其运输带来自身温度相关的复杂性，将导致不同的模式，并且使用此研究方法可以轻松完成。

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