Modelling of two-dimensional contaminant migration in a layered and fractured zone beneath landfills
Modelling of two-dimensional contaminant migration in a layered and fractured zone beneath landfills
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垃圾填埋场下层状破碎区二维污染物迁移建模
DOI：
10.1139/t91-045
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发表时间：
1991
影响因子：
3.6
通讯作者：
J. Booker
中科院分区：
文献类型：
--
作者：
R. K. Rowe;J. Booker
描述了一种新的二维有限层公式，该公式允许考虑由裂缝层和未裂缝层组成的系统中污染物的垂直和水平迁移。考虑了污染物从典型的城市和非危险废物处置场的迁移。本文不考虑浓密非水相污染物的迁移，这涉及到额外的迁移机制。通过一些假想案例说明了该理论的应用。结果表明，即使是相对分布较广的小裂缝，也可能对地下含水层中的地下水质量产生重大影响。研究还表明，在处理相对不透水的耕层时，对地下含水层的影响可能只有在垃圾渗滤液处于低浓度后才会发生；然而，影响可能相当大，可能持续数百年。考虑到了……的含义。
A new two-dimensional finite layer formulation that allows consideration of both vertical and horizontal contaminant migration in systems that may consist of both fractured and unfractured layers is described. Consideration is given to contaminant migration from typical municipal and nonhazardous waste disposal sites. The migration of concentrated dense nonaqueous phase contaminant, which involves additional transport mechanisms, is not considered in this paper. The use of the theory is illustrated with respect to a number of hypothetical cases. The results indicate that even relatively widely spaced small fractures can have a significant effect on potential impact on groundwater quality in an underlying aquifer. It is also shown that when dealing with relatively impermeable tills, impact on an underlying aquifer may not occur until after the landfill leachate is at a low strength; however, the impact may be quite significant and may last for hundreds of years. Consideration is given to the implication of...