Advances in the Study of Far-Field Phenomena Affecting Repository Performance

by C. F. Tsang, Lawrence Berkeley Lab, Berkeley, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991


Studies of far-field phenomena affecting repository performance have focussed on the role of fractures and other heterogeneities in the potential transport of radioactive solutes from the repository to the biosphere. The present paper summarizes two recent advances in the subject: the channeling model for the understanding and analysis of tracer transport in variable-aperture fractures and the modeling of coupled thermo-hydro-mechanical processes in geologic formation around a repository. The paper concludes with remarks on the need for duality in the approach to performance assessment. One line of the duality is fundamental studies and the other, goal-oriented assessment to satisfy regulatory requirements.

Subject Headings: Hydraulic models | Geology | Waste storage | Heterogeneity | Ecosystems | Thermal analysis | Probe instruments | Coupling

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