ENGINEERING GEOLOGY AND ROCK FRACTURE FLOW TRANSPORT OF TOXIC CHEMICALS

工程地质与有毒化学品的岩石破裂流输运

• 批准号: 3840725
• 负责人: HERBERT H EINSTEIN
• 金额: --
• 依托单位: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/3840725
• 关键词: computer program /software; computer simulation; data collection; environmental stressor; environmental toxicology; field study; fresh water environment; ground water; industrial waste; mathematical model; model design /development; soil; toxicant interaction; water flow; water pollution

Flow of contaminated groundwater and its interaction with the ground occurs both in soil and rock. Prediction of contaminant transport and transformation is very important in planning of remedial and preventive measures and requires suitable transport and transformation models. Evidence exists in many areas of this country that substantial groundwater flow occurs in fractured rock underlying the soil; this is particularly so in the Aberjona Valley where contaminated groundwater has been found in the rock fractures. Predicting the potential contaminant transport requires fracture flow models. The present status of fracture flow models is unsatisfactory in that they are often based on unrealistic geometries, in that neither extensive parametric simulation nor field studies have been conducted and that, as a consequence, the range of applicability of continuum models is not known. The proposed three-year research has two major components. 1. It will characterize the soil and rock formation in the Aberjona Valley to provide the information for developing fracture flow models. This engineering geologic characterization is also an essential basis for most other Core B research projects. Data collection has started and will continue. In addition to the Superfund exploration wells, many other borings and surface exposures will be used for this purpose. A computer program for 3-d representation and manipulation of this data will also be developed. 2. It will develop geometric fracture system models, geometric and flow models of individual fractures, and it will then combine the geometric fracture system - and individual fracture models in fracture flow models. The fracture flow model representing flow in fractured masses will be first used to conduct computer simulations to determine which parameters and parameter states are significant; it will also be used to find the application limits between discrete fracture models and equivalent porous media models. All this will be done in the context of the Aberjona aquifer and, consequently a field validation will be conducted which will be combined with the other projects of the Aberjona field study. The field tests will provide the basis of further research in which transportation and transformation models need to be developed.

污染地下水的流动及其与地面的相互作用 在土壤和岩石中都有。 污染物输运预测和 转型在补救和预防计划中非常重要 措施，并需要适当的运输和转换模式。 在这个国家的许多地区都有证据表明 流动发生在土壤下面的断裂岩石中，尤其如此 在阿贝乔纳山谷发现了受污染的地下水， 岩石断裂 预测潜在的污染物输送 需要裂缝流动模型。 裂缝渗流模型研究现状 是不能令人满意的，因为它们通常基于不切实际的几何形状， 因为无论是广泛的参数模拟还是实地研究， 因此，适用的范围， 连续模型是未知的。 拟议的三年研究有两个主要组成部分。 1.它将 描述阿伯乔纳山谷的土壤和岩层， 建立裂缝流动模型的信息。 本工程 地质特征也是大多数其他核心的重要基础。 B研究项目。数据收集已经开始，并将继续进行。 在 除了超级基金勘探威尔斯，许多其他钻孔和 为此目的，将使用表面曝光。 的计算机程序 还将开发这种数据的三维表示和处理。 2.它将开发几何裂缝系统模型，几何和流动 然后它将联合收割机 裂缝流动模型中的裂缝系统和单个裂缝模型。 代表裂隙体中流动的裂隙流模型将是 首先用于进行计算机模拟，以确定哪些参数 和参数状态是重要的;它也将被用来找到 离散裂缝模型和等效孔隙模型的应用局限性 媒体模式 所有这一切都将在阿伯乔纳的背景下进行 因此，将进行实地验证， 与阿伯乔纳实地研究的其他项目相结合。 的 现场测试将为进一步研究提供基础， 需要开发运输和转换模式。