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首页> 外文会议>Advances on coupled thermo-hydro-mechanical-chemical processes in geosystems and engineering >NUMERICAL MODELLING OF SUBSURFACE COUPLED THM PROCESSES IN A SUB-REGIONAL-SCALE GROUNDWATER FLOW SYSTEM IN A CANADIAN SHIELD SETTING DURING A GLACIAL EVENT: I. CONCEPTUAL MODEL DEVELOPMENT
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NUMERICAL MODELLING OF SUBSURFACE COUPLED THM PROCESSES IN A SUB-REGIONAL-SCALE GROUNDWATER FLOW SYSTEM IN A CANADIAN SHIELD SETTING DURING A GLACIAL EVENT: I. CONCEPTUAL MODEL DEVELOPMENT

机译：冰河事件期间加拿大盾构环境中次尺度地下水流系统中地下耦合THM过程的数值模拟：I.概念模型的发展

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A Deep Geologic Repository situated on the Canadian Shield will be subject to long-term climate change that will markedly alter surface conditions as a result of glaciation and permafrost penetration. Task E of the international DECOVALEX THM-C program is a systematic numerical case study of the subsurface THM processes and mechanisms arising from long-term climate change. The case study focuses on predicting the magnitudes and rates of change in groundwater flow and state of stress caused by time-varying glacial boundary conditions acting on a 1.5-km deep, sub-regional scale (≈100 km~2), fractured Shield flow system, which includes a connected Fracture-zone Network Model (FNM). The boundary conditions are provided by a continental-scale Laurentide ice-sheet scenario from the University of Toronto Glacial Systems Model. This paper summarizes the initial Task E activities of conceptual and numerical model development and testing, including: a systematic and traceable approach utilizing scientific visualization methods and tools to simplify the full FNM to one amenable to coupled THM modelling and testing the simplified FNM by comparing Task E steady-state flow simulations using the simplified FNM with alternative simulations using both the full and simplified FNM's.
机译：位于加拿大盾构的深层地质处置库将受到长期气候变化的影响，这将由于冰川作用和永久冻土渗透而显着改变地表条件。国际DECOVALEX THM-C计划的任务E是对由长期气候变化引起的地下THM过程和机理进行的系统数值案例研究。该案例研究着重于预测由于时变的冰川边界条件作用于1.5 km深的局部区域尺度（≈100km〜2）裂开的盾构流而引起的地下水流量变化的大小和速率以及应力状态系统，其中包括一个连接的断裂带网络模型（FNM）。边界条件由多伦多大学冰川系统模型的大陆尺度Laurentide冰盖情景提供。本文总结了概念和数值模型开发和测试的最初Task E活动，包括：一种系统且可追溯的方法，利用科学的可视化方法和工具将完整的FNM简化为可耦合的THM建模，并通过比较Task来测试简化的FNM使用简化的FNM进行E稳态流动模拟，同时使用完整和简化的FNM进行替代模拟。

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