Articles | Volume 13, issue 2
Research article
10 Feb 2022
Research article |  | 10 Feb 2022

Seismic monitoring of the STIMTEC hydraulic stimulation experiment in anisotropic metamorphic gneiss

Carolin M. Boese, Grzegorz Kwiatek, Thomas Fischer, Katrin Plenkers, Juliane Starke, Felix Blümle, Christoph Janssen, and Georg Dresen

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Cited articles

Adero, B.: Experimental investigations of mechanical anisotropy of Freiberg gneiss: implications for hydraulic stimulation, PhD thesis, Ruhr-Universität Bochum,, 2020. 
Amann, F., Gischig, V., Evans, K., Doetsch, J., Jalali, R., Valley, B., Krietsch, H., Dutler, N., Villiger, L., Brixel, B., Klepikova, M., Kittilä, A., Madonna, C., Wiemer, S., Saar, M. O., Loew, S., Driesner, T., Maurer, H., and Giardini, D.: The seismo-hydromechanical behavior during deep geothermal reservoir stimulations: open questions tackled in a decameter-scale in situ stimulation experiment, Solid Earth, 9, 115–137,, 2018. 
Bayer, M.: Die Himmelfahrt Fundgrube: ein Führer durch das Lehr- und Besucherbergwerk der TU Bergakademie Freiberg, TU Bergakademie, Verlag druckspecht, 1999. 
Boese, C., Kwiatek, G., Fischer, T., Renner, J., and Dresen, G.: AE-type hydrophone performance during the STIMTEC and STIMTEC-X hydraulic stimulation campaigns at Reiche Zeche Mine, Germany, in: 55th US Rock Mechanics/Geomechanics Symposium, Houston, Texas, USA, 20–23 June, American Rock Mechanics Association, ARMA-2021-1724, (last access: January 2022), 2021a. 
Boese, C. M., Kwiatek, G., Fischer, T., Plenkers, K., Starke, J., Blümle, F., Dresen, G., and Janssen, C.: Ultrasonic transmission measurements from six boreholes from the STIMTEC experiment, Reiche Zeche Mine, Freiberg (Saxony, Germany), GFZ Data Services [data set],, 2021b. 
Short summary
Hydraulic stimulation experiments in underground facilities allow for placing monitoring equipment close to and surrounding the stimulated rock under realistic and complex conditions at depth. We evaluate how accurately the direction-dependent velocity must be known for high-resolution seismic monitoring during stimulation. Induced transient deformation in rocks only 2.5–5 m apart may differ significantly in magnitude and style, and monitoring requires sensitive sensors adapted to the frequency.