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
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 Peltiers (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.
Tin Chan Frank W.Stanchell
Atomic Energy of Canada Limited (AECL)
国际会议
南京
英文
62-67
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）