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: 3755066
• 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/3755066
• 关键词: computer program /software; computer simulation; data collection; environmental stressor; environmental toxicology; environmental transport; 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.

受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。污染物运移和污染预测 转型在补救和预防规划中是非常重要的 衡量并需要适当的运输和转化模式。 在这个国家的许多地区都存在大量地下水的证据 水流发生在土壤下面的碎裂岩石中，尤其如此。 在阿伯乔纳山谷，那里的地下水被发现受到污染 岩石破裂了。预测潜在的污染物运移 需要裂缝流模型。裂隙渗流模型研究现状 不能令人满意，因为它们通常基于不现实的几何图形， 因为无论是广泛的参数模拟还是现场研究都没有 因此，《公约》的适用范围 连续体模型尚不清楚。 拟议的为期三年的研究包括两个主要部分。1.它会 描述阿伯乔纳山谷的土壤和岩石形成，以提供 开发裂隙流模型的信息。这项工程 地质特征也是大多数其他岩心的重要基础 B研究项目。数据收集已经开始，并将继续进行。在……里面 除了超级基金的探井外，许多其他钻井和 表面曝光将用于此目的。一种计算机程序，用于 还将开发这种数据的三维表示和操作。 2.将开发几何裂缝系统模型、几何模型和流动模型 单个骨折的模型，然后它将结合几何图形 裂缝系统--裂缝流动模型中的单个裂缝模型。 代表裂隙体流的裂隙流模型将是 首先用于进行计算机模拟，以确定哪些参数 和参数状态非常重要；它还将用于查找 离散裂缝模型与等效孔隙模型的应用界限 媒体模特。所有这些都将在阿伯乔纳的背景下进行。 含水层，因此将进行现场验证，这将 与阿伯乔纳实地研究的其他项目相结合。这个 现场测试将为进一步的研究提供基础， 需要开发运输和转换模型。