Flow and Transport in Hierarchically Fractured Systems

by Kenzi Karasaki, Lawrence Berkeley Lab, Berkeley, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993


Preliminary results indicate that flow in the saturated zone at Yucca Mountain is controlled by fractures. A current conceptual model assumes that the flow in the fracture system can be approximated by a three-dimensionally interconnected network of linear conduits. The overall flow system of rocks at Yucca Mountain is considered to consist of hierarchically structured heterogeneous fracture systems of multiple scales. A case study suggests that it is more appropriate to use the flow parameters of the large fracture system for predicting the first arrival time, rather than using the bulk average parameters of the total system.

Subject Headings: Cracking | Three-dimensional flow | Case studies | Parameters (statistics) | Flow control | Flow duration | Radioactive wastes | Volcanic deposits

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