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Transcript

Groundwater Flow

in

Fractured Bedrock

Groundwater Flow in Fractured Bedrock

Fractures

Joints, Faults, Shear Zones Dikes, Large Fissures

Pore Space = Aperture

Permeability = Connectivity

Hydrogeology

Whats wrong with this system?

  • Assumes homogenous and isotropic
  • All materials are not the same
  • There's no Structures

Things that promote fluid flow

Things that cause barriers

  • Fault must be parallel to hydraulic gradient
  • Porosity must be less than that of the host rock
  • The fractures must be open and connecting
  • Tightly cemented fault core
  • Aquifers/reservoir offset by a fault
  • Clay Smear in the fault zone
  • Mineralization of the fractures after movement has stopped

Barrier

Flow

Yikes!! multi-variable calculus

Husavik-Flatey Fault, Iceland

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