Fraunhofer Research Institution for Energy Infrastructures and Geotechnologies IEGThe German Center for Astrophysics (DZA) was one of the two winners of the ideas competition »Knowledge creates perspectives for the region!« initiated by the Federal Ministry of Education and Research. An integral part of the DZA, which is based in Görlitz, is the »Low Seismic Lab« underground laboratory to be built between Bautzen, Kamenz and Hoyerswerda at a depth of between 200 and 250 meters. The subsurface consists of Lusatian granodiorite, which has been little explored to date.
Objective
Until the DZA gGmbH is found, the Deutsches Elektronen-Synchrotron (DESY) is project managing entity together with TU Dresden. As such DESY has awarded IEG the contract for the geotechnical characterization and evaluation of four up to 250 meters long cores of the Lusatian granodiorite as well as consulting services, in order to evaluate the best location for the Low Seismic Lab in cooperation with other project partners.
The task of the IEG is the geotechnical, petro-physical, hydrogeological and geophysical survey of the cores and the derivation of recommendations for the positioning and construction of the laboratory caverns and their access in the Lusatian granodiorite. To this end, the cores will be geologically and geotechnically surveyed and, together with RWTH Aachen University, porosity and density measurements, gas and water permeability with and without restraint, seismic velocities, uni- and tri-axial compression tests, indirect tensile tests and abrasivity tests will be carried out on core samples.
