A framework for modelling groundwater flow in deep heterolithic sedimentary sequences

深层异石器沉积层序地下水流模拟框架

• 批准号: 2891943
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2891943
• 关键词: framework; modelling; groundwater; flow; deep

The management of risk associated with the deep disposal of radioactive material in an underground Geological Deposal Facility (GDF) is based on the multiple barrier concept. One of these barriers is the geosphere or the geological environment of the host and surrounding rock formations. Therefore, understanding the movement of groundwater in these formations and its effect on radionuclide transport is vital to the development of operational and post-closure safety cases.The Mercia Mudstone Group (MMG) is currently being considered as a potential host rock for a GDF. This formation, however, has not been investigated to the same extent as other potential host rocks. There is a need, therefore, to develop hydrogeological models of the MMG and adjacent rocks in the North East Irish Sea Basin (NEISB). This will be the focus of the PhD, which will use data collection to construct a conceptual 3D stratigraphic ground model. This, in turn, will be converted into a dynamic numerical model using the Imperial College Finite Element Reservoir Simulator (IC-FERST). This state-of-the-art numerical code will be used to explore the controls on groundwater flow in the context of radionuclide movement, along with the effects of data uncertainty under current and near future climates.

与在地下地质储存设施(GDF)深度处置放射性材料有关的风险管理是基于多重屏障的概念。这些障碍之一是地圈或宿主和周围岩层的地质环境。因此，了解这些地层中地下水的运动及其对放射性核素运移的影响，对于开发运营和关闭后的安全案例至关重要。麦西亚泥岩组(MMG)目前被认为是GDF的潜在赋存岩石。然而，这个地层还没有像其他潜在的寄主岩石那样被研究到同样的程度。因此，有必要建立爱尔兰东北部海盆(NEISB)MMG及其邻近岩石的水文地质模型。这将是PHD的重点，它将使用数据收集来构建概念性的3D地层地面模型。反过来，这将被转换成使用帝国理工学院有限元油藏模拟器(IC-FERST)的动态数值模型。这一最先进的数字代码将用于探索在放射性核素运动的背景下对地下水流动的控制，以及在当前和不久的将来气候下数据不确定性的影响。