This Section deals with seismicity, which, on the one hand, helps to monitor the progress of increasing rock permeability, but on the other hand can lead to disturbance of the population. The section provides the technical and methodological background for conducting seismic monitoring at high sensitivity in order to determine with sufficient accuracy the location of focal points and the geometry of fractures that have been activated. The second area under investigation within this section is the topic of rock stress, which is closely related to the permeability of the rock mass and the possibility of creating a geothermal exchanger at depth with the help of hydraulic stimulation. The infrastructure provides laboratories to study the geomechanical and geotechnical characteristics of rocks and their relationship to the geometry of natural fracture systems and rock stresses, using load tests and numerical models. It also includes monitoring of slow movements on fractures using sensitive dilatometers.

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