Jörg Renner
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View article: SAFENET-2 – fracture evolution in crystalline rocks (from lab to in situ scale)
SAFENET-2 – fracture evolution in crystalline rocks (from lab to in situ scale) Open
The DECOVALEX Task SAFENET is dedicated to advancing the understanding of fracture nucleation and evolution processes in crystalline rocks, with applications in nuclear waste management and geothermal reservoir engineering. Further improve…
View article: Complex Poisson’s ratio for viscoelastic materials: direct and indirect measurement methods and their correlation
Complex Poisson’s ratio for viscoelastic materials: direct and indirect measurement methods and their correlation Open
The viscoelastic complex Poisson’s ratio, which describes the frequency-dependent ratio of transverse and longitudinal strains, can be determined directly from simultaneous strain measurements or indirectly from successively measured compl…
View article: SAFENET – Fracture evolution in crystalline rocks (from lab to in-situ scale)
SAFENET – Fracture evolution in crystalline rocks (from lab to in-situ scale) Open
The DECOVALEX Task SAFENET is dedicated to advancing the understanding of fracture nucleation and evolution processes in crystalline rocks, with applications in nuclear waste management and geothermal reservoir engineering. Further improve…
View article: Flow focusing associated with doublet operation
Flow focusing associated with doublet operation Open
Heat and cold storage in the subsurface as well as geothermal energy provision intrinsically involve cyclic pumping operations, often in fields of several boreholes. We investigated the pressure and flow-rate fields resulting from the simu…
View article: Fractal diffusion analyses of periodic pumping tests
Fractal diffusion analyses of periodic pumping tests Open
We investigated the usefulness of the fractal diffusion equation, also known as generalized radial flow (GRF) equation, to characterize hydraulic properties and flow dimensions of the subsurface. Unlike other methods for deriving hydraulic…
View article: Deformation and reaction of plagioclase-rich rocks at conditions of the lower continental crust
Deformation and reaction of plagioclase-rich rocks at conditions of the lower continental crust Open
Due to contrasting results between laboratory tests, geophysical data, and field observations, the strength of the plagioclase-rich lower continental crust remains a topic of debate. It has been shown that its strength highly depends on th…
View article: How Strong/Weak Is Epidote Relative to Plagioclase?
How Strong/Weak Is Epidote Relative to Plagioclase? Open
In natural lower crustal rocks, we observe that plagioclase breakdown is often partial as evidenced by the presence of epidote‐group minerals and the absence of the remaining reaction products for example, kyanite and quartz. Due to the la…
View article: Interlaboratory comparison of testing hydraulic, elastic, and failure properties in compression: lessons learned
Interlaboratory comparison of testing hydraulic, elastic, and failure properties in compression: lessons learned Open
Many geoscientific problems require us to exploit synergies of experimental and numerical approaches, which in turn lead to questions regarding the significance of experimental details for validation of numerical codes. We report results o…
View article: Dilatometer measurements from the projects STIMTEC and STIMTEC-X
Dilatometer measurements from the projects STIMTEC and STIMTEC-X Open
Dilatometer measurements from various of the boreholes in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Borehole logs of the projects STIMTEC and STIMTEC-X
Borehole logs of the projects STIMTEC and STIMTEC-X Open
Logs available for each borehole in the Research mine Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X. Logging operations were carried out by LIAG (Hannover, Germany). The types of data available include optical …
View article: Borehole logs of the projects STIMTEC and STIMTEC-X
Borehole logs of the projects STIMTEC and STIMTEC-X Open
Logs available for each borehole in the Research mine Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X. Logging operations were carried out by LIAG (Hannover, Germany). The types of data available include optical …
View article: Dilatometer measurements from the projects STIMTEC and STIMTEC-X
Dilatometer measurements from the projects STIMTEC and STIMTEC-X Open
Dilatometer measurements from various of the boreholes in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Hydraulic Data from pumping tests in the projects STIMTEC and STIMTEC-X
Hydraulic Data from pumping tests in the projects STIMTEC and STIMTEC-X Open
Hydraulic Data from pumping tests, i.e., injection and production, and pressure monitoring in various boreholes drilled in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Hydraulic Data from pumping tests in the projects STIMTEC and STIMTEC-X
Hydraulic Data from pumping tests in the projects STIMTEC and STIMTEC-X Open
Hydraulic Data from pumping tests, i.e., injection and production, and pressure monitoring in various boreholes drilled in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Clock documentation for STIMTEC and STIMTEC-X
Clock documentation for STIMTEC and STIMTEC-X Open
Clock documentation to synchronize hydraulic measuring systems, and the seismic and hydraulic measuring systems used in projects STIMTEC and STIMTEC-X (Freiberg, Germany)
View article: Daily Reports from the projects STIMTEC and STIMTEC-X
Daily Reports from the projects STIMTEC and STIMTEC-X Open
Daily Reports of the activities in the Research Mine Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Daily Reports from the projects STIMTEC and STIMTEC-X
Daily Reports from the projects STIMTEC and STIMTEC-X Open
Daily Reports of the activities in the Research Mine Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Clock documentation for STIMTEC and STIMTEC-X
Clock documentation for STIMTEC and STIMTEC-X Open
Clock documentation to synchronize hydraulic measuring systems, and the seismic and hydraulic measuring systems used in projects STIMTEC and STIMTEC-X (Freiberg, Germany)
View article: Photographs of borehole cores from project STIMTEC and STIMTEC-X
Photographs of borehole cores from project STIMTEC and STIMTEC-X Open
Photographs of the cores of the various boreholes drilled in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Impression Packer Data from STIMTEC and STIMTEC-X
Impression Packer Data from STIMTEC and STIMTEC-X Open
Foils and orientation information from impression packer testing performed in the projects STIMTEC and STIMTEC-X in various boreholes located in Reiche Zeche (Freiberg, Germany)
View article: Photographs of borehole cores from project STIMTEC and STIMTEC-X
Photographs of borehole cores from project STIMTEC and STIMTEC-X Open
Photographs of the cores of the various boreholes drilled in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X
View article: Impression Packer Data from STIMTEC and STIMTEC-X
Impression Packer Data from STIMTEC and STIMTEC-X Open
Foils and orientation information from impression packer testing performed in the projects STIMTEC and STIMTEC-X in various boreholes located in Reiche Zeche (Freiberg, Germany)
View article: Borehole orientation data for STIMTEC and STIMTEC-X
Borehole orientation data for STIMTEC and STIMTEC-X Open
The data files contain the orientation information of 17 out of the 19 boreholes drilled in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X.
View article: Borehole orientation data for STIMTEC and STIMTEC-X
Borehole orientation data for STIMTEC and STIMTEC-X Open
The data files contain the orientation information of 17 out of the 19 boreholes drilled in Reiche Zeche (Freiberg, Germany) during the projects STIMTEC and STIMTEC-X.
View article: Diagnosing Hydro-Mechanical Effects in Subsurface Fluid Flow Through Fractures
Diagnosing Hydro-Mechanical Effects in Subsurface Fluid Flow Through Fractures Open
Hydro-mechanically induced transient changes in fracture volume elude an analysis of pressure and flow rate transients by conventional diffusion-based models. We used a previously developed fully coupled, inherently non-linear numerical si…
View article: The Effect of the Garnet Content on Deformation Mechanisms and Weakening of Eclogite: Insights From Deformation Experiments and Numerical Simulations
The Effect of the Garnet Content on Deformation Mechanisms and Weakening of Eclogite: Insights From Deformation Experiments and Numerical Simulations Open
We performed deformation experiments on omphacite‐garnet aggregates at a temperature of 1000°C, a confining pressure of 2.5 GPa, and a strain rate of 3 × 10 −6 s −1 and complemented them by numerical simulations to gain insight into the ro…
View article: Deformation of epidote and plagioclase in the semi-brittle regime
Deformation of epidote and plagioclase in the semi-brittle regime Open
In the plagioclase-rich lower continental crust, hydrous epidote-group minerals will, among other phases, replace plagioclase in the presence of minor amounts of fluids. It has previously been shown that this reaction has a significant imp…
View article: Excavation Simulations and Cutting Tool Wear
Excavation Simulations and Cutting Tool Wear Open
The mechanized tunnel construction is carried out by tunnel boring machines, in which the soil in front of the working face is removed, and the tunnel lining is carried out with shotcrete or the setting of segments and their back injection…
View article: Assessing-the-role-of-non-linear-contact-mechanics-for-flow-in-fractures---experimental_data
Assessing-the-role-of-non-linear-contact-mechanics-for-flow-in-fractures---experimental_data Open
Data to reproduce pressure response spectra from a number of harmonic measurements shown in "Assessing the role of non-linear contact mechanics for flow in fractures" Note: Data of AFR, BHR and TER has been extracted from papers published …
View article: Assessing-the-role-of-non-linear-contact-mechanics-for-flow-in-fractures---experimental_data
Assessing-the-role-of-non-linear-contact-mechanics-for-flow-in-fractures---experimental_data Open
Data to reproduce pressure response spectra from a number of harmonic measurements shown in "Assessing the role of non-linear contact mechanics for flow in fractures" Note: Data of AFR, BHR and TER has been extracted from papers published …