Grimsel Test Site (GTS)
Underground Research & Development URL
 
Home
Phase VI Experiments
CFM
LTD
T-H
NF-Pro
LCS
PSG
MTF
Phase V Experiments
CRR
EFP
FOM
FEBEX
GAM
GMT
HPF
 GAM - Conclusions
 
 GAM Project
 GAM Introduction
 Experimental Concept
 Site Characterisation & Layout
 In-situ Tests
 Laboratory Studies
 Modelling Studies
 Conclusions
 Publications
  < Home Page
Home > GAM Project
Gas Migration in Shear Zones (GAM)
Conclusions

  • Site-specific microstructural features of a shear zone are determining factors for macroscopic flow and transport properties. Conservative solute transport is governed by the effective porosity of the composite system of flow channels. Particle and gas migration are determined by the pore-size distribution in the shear zone. Experimental evidence for preferential gas flow is provided by visualisation experiments on both the field scale and on the laboratory scale.
  • The strong impact of the permeability-porosity relationship on hydrodynamic dispersion of solutes has been shown experimentally and by numerical simulations. This relationship is a site-specific property of shear zones, which may be determined by micro-structural analyses.


  • The use of complementary tracers is recommended to improve understanding of mass transfer parameters in a multiple porosity structure such as the GAM shear zone.

 

  
Gas Migration in Shear Zones (GAM) Experiment  
 Phase VI Projects : CFM | LTD | T-H | NF-Pro | LCS | PSG | MTF
 Phase V Projects : CRR | EFP | FOM | FEBEX | GAM | GMT | HPF
© Copyright 2005 Grimsel Test Site - Switzerland