Evaluation of Discrete Interface Penetration Analysis as A Method for Identifying Soil Interaction Mechanisms

该项目的目的是进行探索性的 研究了离散元的使用条件， 界面渗透分析可用作 诊断程序，用于识别 这些机制负责改变 土壤的渗透性。 渗透率变化结果 从机制的组合，如胶体 失稳和分散，收缩或膨胀 粘土矿物、沉淀或溶解、气体 释放和改变的微生物活性。 离散 界面渗透分析是一种新技术， 模拟反应性液体的影响， 假设影响可以用旅行来表示， 分隔土壤变化区域的界面 特性. 最近的许多关注集中在相互作用上 危险废物和水力屏障之间的联系， 这是一种普遍的现象， 科学和工程的许多领域。 成果 项目可能直接适用于 改进安全壳位置的工程设计 以尽量减少地下水污染。 该项目是根据一项提案提出的， 雅阁与NSF 87-90，加速奖的小说 Research.

The objective of this project is to conduct exploratory research on the conditions under which use of discrete interface penetration analysis can be used as a diagnostic procedure for identification of the mechanisms that are responsible for changes in the permeability of soils. Permeability changes result from combinations of mechanisms such as colloid destabilization and dispersion, shrinking or swelling of clay minerals, precipitations or dissolutions, gas liberation, and altered microbial activity. Discrete interface penetration analysis is a new technique for modeling the impacts of reactive liquids based on the assumption that impacts can be represented by traveling interfaces separating areas of changing soil properties. Much recent concern has focussed on interactions between hazardous wastes and hydraulic barriers, but this is a general class of phenomena significant in many areas of science and engineering. Results of this project may have immediate applicability toward improved engineering design of containment locations for hazardous wastes to minimize groundwater pollution. This project results from a proposal submitted in accord with NSF 87-90, Expedited Awards for Novel Research.