Pore Space Geometry (PSG) - In-situ Experiment - Drilling and Preparation

The boreholes for the PSG experiment were drilled in January 2004. The core material from the injection borehole was found to be completely homogenous matrix to a depth of around 1.3 metres. The cores from the injection borehole are shown below.

Core material from PSG injection borehole - sections shown below in higher resolution


Section 1

Section 2

Section 3

Section 4

Section 5

Sections from the cores were sent to Finland for lab based porosity measurements (see the Support of in-situ test section).

The drilled PSG boreholes in the WT tunnel with the air ventilation system in place


Pore Space Geometry (PSG) Experiment

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.