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GIS Application to Discrete Fracture Flow

This document presents a comprehensive exploration of using GIS for discrete fracture flow modeling. It details the fundamental concepts of fracture flow, sample preparation, and GIS implementation strategies. Key areas covered include friction factors in cubic laws, roughness influences, and directional effects. The study analyzes specific samples, such as Santana Tuff and Closed Canyon imaged surfaces, alongside their computational methodologies. Furthermore, ongoing work related to terrain processing, DEM applicability, and modern modeling integration with MODFLOW is discussed, emphasizing advancements in hydrogeological modeling.

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GIS Application to Discrete Fracture Flow

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  1. GIS Application to Discrete Fracture Flow By: Donald T. Slottke 22 November, 2005

  2. Topics • Brief background on fracture flow • Sample description and preparation • GIS implementation • Further work

  3. Topics • Brief background on fracture flow • Friction factor in cubic law • Applicable roughness influence • Directionality of influence • Sample description and preparation • GIS implementation • Further work

  4. Lomize Revision of the Cubic Law * *as given in a class paper by Matt Uliana (1999)

  5. A Modeled Fracture

  6. Roughness Parallel to Slip vs Perpendicular from Amitrano and Schmittbuhl 2002

  7. Topics • Brief background on fracture flow • Sample description and preparation • Santana Tuff • Sample CC02 • CT image of fracture • GIS implementation • Further work

  8. Closed Canyon

  9. ImagedSurface

  10. Closed Canyon Fracture

  11. Topics • Brief background on fracture flow • Sample description and preparation • GIS implementation • Pseudo DEM • Problems • Comparison of Terrain Processing to MODFLOW • Further work

  12. Hillshade of CC02 Flattened

  13. Flow direction calculatedwith imposed 10o slope fromleft to right

  14. Adjoint Catchment with Drainage Lines

  15. MODFLOW Head Distribution

  16. Contour Burned Catchments

  17. Cell by Cell Discharge Through Face of Overriding Flowpath

  18. Flow Direction of Flattened Data

  19. Topics • Brief background on fracture flow • Sample description and preparation • GIS implementation • Further work • Registration of surfaces • Creation of GeoVolume using top and bottom surface • Linking MODFLOW model to GeoDatabase

  20. Comments…

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