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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Numerical Analysis of the Desaturation Process at the Argillaceous Tournemire Site (France)


Congress title :GeoProc 2008 - 3rd International Conference on coupled T-H-M-C processes in geo-systems 
Congress town :Lille
Congress date :02/06/2008

Summary

This contribution describes the simulation of the time dependent desaturation process around an excavated opening at the argillaceous Tournemire site. With comparative simulations the sensitivity of material parameters has been investigated. Two zones around the opening can be defined: a seasonally influenced zone in the nearfield, caused by the sea-sonal fluctuation ofthe humidity ofthe air, and a long term influenced zone in the far field, caused by the mean value of humidity ofthe air. In order to validate the developed model and to verify the chosen range of material properties, the simulation results are compared with in situ measurements of saturation profiles.
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