Abstract
Hydrogeological, engineering geological and geophysical field experiments have been carried out to assess the groutability of disintegrated granites. The studies included in-situ investigations of fabrics, optical soundings in bore holes, joint tracing techniques and water pressure tests (Lugeon) as well as geolectrical self-potential measurements and seismical experiments. Up to now results from packer tests have been used as the most important criterion for sealing measures. By means of the above-mentioned research methods additional parameters have been determined to characterize the rock mass with special attention being paid to the detection of the preferred directions of the water paths, thus leading to a more precise and more economical judgement of necessary grouting measures. The number of the covering abstract of the congress is TRIS no. 385148. (TRRL)
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