Effective Field Parameters (EFP) - Changing Parameters

Modelling was also carried out on tracer experiments designed to examine the effects of changing the length of the dipole flow field on tracer breakthrough curves.

The graphs below show a good agreement between the results of the tracer tests (left) and the results of modelling (right).

 Results of the tracer tests (left) and the results of modelling (right)


This has allowed an understanding of the effects of scale on transport properties to be achieved.

Model analysis was then carried out where matrix diffusion and sorption were included over varying transport distances. The graphs below demonstrate that as transport distances increase (from 1 m to 10 m to 100 m) the effect of matrix diffusion and sorption in the rock has a large effect on radiotracer breakthrough.

As transport distances increase (from 1 m to 10 m to 100 m) the effect of matrix diffusion and sorption in the rock has a large effect on radiotracer breakthrough

 

Effective Field Parameters (EFP) - Numerical Modelling

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.