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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: II. COUPLED HM MODELLING
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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: II. COUPLED HM MODELLING

机译：冰河事件期间，加拿大盾构环境中次区域尺度地下水流系统中地下耦合过程的数值模拟：II。耦合HM建模

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摘要

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 THMC program is a systematic numerical case study of the subsurface THM processes and mechanisms arising from long-term climate change and glaciation in a sub-regional scale fractured Shield flow system, which includes a connected fracture zone network model. We present coupled HM finite-element subsurface modelling using initial and transient mechanical and hydraulic boundary conditions developed from Peltier's (2003) Laurentide ice-sheet model of the last continental glacial event ～120, 000 years), which provides the rate of ice-sheet advance and retreat, basal normal stress, temperature and meltwater fluxes. Preliminary results indicate an absence of residual elevated head, which may be attributed partly to the cold-based glacial scenario and partly to the permeability distribution.
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 THMC计划的任务E是对次区域尺度裂隙盾构流动系统中长期气候变化和冰川作用引起的地下THM过程和机理进行的系统数值案例研究，其中包括连通的裂隙带网络模型。我们使用从珀尔帖（2003）Laurentide冰盖模型（最后一次大陆冰川事件〜120，000年）开发的初始和瞬态机械和水力边界条件，提出了HM有限元地下耦合模型，该模型提供了冰盖的速率前进和后退，基础法向应力，温度和融水通量。初步结果表明没有残留的抬头，这可能部分归因于寒冷的冰川环境，部分归因于渗透率分布。

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