Near Field Processes (NF-PRO) - Experimental Concept

The laboratory tests will be performed on two granite cores from the GTS: (i) tests with a matrix core representing the intact granite at the GTS and (ii) tests with a core which include a shear zone.

The planning of the experimental programme foresees the following steps:

  • recovery of two cores
     
  • construction of the experimental set-up and detailed test plan
     

Beside controlled saturation and desaturation tests, a tracer test to visualise the flow path will be carried out on the core which includes a shear zone.

The laboratory experiment will feed into the ongoing FEBEX long-term monitoring programme at the GTS by providing new calibration functions for the granite probes. Post-processing of the entire TDR data base will provide an updated TDR data set for the FEBEX master data base.

Time schedule

  • Start of the NF Pro in 2005
     
  • In-situ measurements (water content evolution of the EBS till 2007)
     
  • Laboratory programme 2005 to 2006

 

Near Field Processes (NF-PRO) Experiment Diffusion - Long Term Diffusion project (LTD)

The GTS underground facilities are also available to interested 3rd parties for underground testing and research. The GTS offers cost-effective access to a fully developed, well characterised underground research facility with round the year logistical support - please contact Dr. Ingo Blechschmidt, Head of the Grimsel Test Site, for further details.
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