GIS Application to Discrete GIS Application to Discrete Fracture FlowFracture Flow

By:By:Donald T. SlottkeDonald T. Slottke

22 November, 200522 November, 2005

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Brief background on fracture flowBrief background on fracture flow Sample description and preparationSample description and preparation GIS implementationGIS implementation Further workFurther work

TopicsTopics

Brief background on fracture flowBrief background on fracture flow• Friction factor in cubic lawFriction factor in cubic law• Applicable roughness influenceApplicable roughness influence• Directionality of influenceDirectionality of influence

Sample description and preparationSample description and preparation GIS implementationGIS implementation Further workFurther work

Lomize Revision of the Cubic Law

*as given in a class paper by Matt Uliana (1999)

*

A Modeled FractureA Modeled Fracture

Roughness Parallel to Slip vs Perpendicular

from Amitrano and Schmittbuhl 2002

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Brief background on fracture flowBrief background on fracture flow Sample description and preparationSample description and preparation

• Santana TuffSantana Tuff• Sample CC02Sample CC02• CT image of fractureCT image of fracture

GIS implementationGIS implementation Further workFurther work

Closed CanyonClosed Canyon

ImagedImaged SurfaceSurface

ClosedClosed Canyon Fracture

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Brief background on fracture flowBrief background on fracture flow Sample description and preparationSample description and preparation GIS implementationGIS implementation

• Pseudo DEMPseudo DEM• ProblemsProblems• Comparison of Terrain Processing to Comparison of Terrain Processing to

MODFLOWMODFLOW Further workFurther work

Hillshade of CC02 FlattenedHillshade of CC02 Flattened

Flow direction calculatedwith imposed 10o slope from

left to right

Adjoint Catchment with Drainage Adjoint Catchment with Drainage LinesLines

MODFLOW Head DistributionMODFLOW Head Distribution

Contour Burned Catchments

Cell by Cell Discharge Through Face of Overriding FlowpathCell by Cell Discharge Through Face of Overriding Flowpath

Flow Direction of Flow Direction of Flattened DataFlattened Data

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Brief background on fracture flowBrief background on fracture flow Sample description and preparationSample description and preparation GIS implementationGIS implementation Further workFurther work

• Registration of surfacesRegistration of surfaces• Creation of GeoVolume using top and Creation of GeoVolume using top and

bottom surfacebottom surface• Linking MODFLOW model to Linking MODFLOW model to

GeoDatabaseGeoDatabase

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