Spatial and temporal changes of pressure and CO2 concentration in isolated borehole sections in the marginal area of a cavernous structure - an underground in-situ study in rock salts

Strauch, Bettina; Zimmer, Martin; Kujawa, Christian; Zirkler, Axel;

2022 || GFZ Data Services

We present a dataset of in-situ measurements in the marginal area of a CO2- and brine-rich cavernous structure in an underground salt mine. The data were collected within the framework of the BMBF-project ProSalz. One aim was to reveal the sources and dynamics of fluid movement as well as temporal and spatial distribution of fluids in a potentially weakened cavern rim. Over a period of three years pressure and gas monitoring was carried out along a transect from a cavernous structure to undisturbed rock salt. In addition, temperature and relative humidity data from the underground gallery were recorded. The gas inflow into isolated borehole sections provided an insight into short- and long-term changes of gas migration patterns in rock salt. Pressure increases of up to 4kPa/day and CO2 concentrations of up to 1.2%, especially at the start of the campaign were measured. The gas migration is coupled to discrete fractures and was limited spatially and temporary. Overall, gas occurrences were not correlated to their distance to the cavern, suggesting no wide-ranging fluid-rock interaction within the rim of the investigated natural cavernous structure in rock salt.

Originally assigned keywords

Corresponding MSL vocabulary keywords

MSL enriched keywords

MSL enriched sub domains
  • geochemistry
  • rock and melt physics
  • analogue modelling of geologic processes
Source http://dx.doi.org/10.5880/gfz.3.1.2022.003
Source publisher GFZ Data Services
DOI 10.5880/gfz.3.1.2022.003
Authors
  • Strauch, Bettina
  • 0000-0002-3648-1032
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
  • Zimmer, Martin
  • 0000-0002-8848-2336
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
  • Kujawa, Christian
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
  • Zirkler, Axel
  • K+S Aktiengesellschaft, Kassel, Germany ;
Contributors
  • Geochemistry Laboratories
  • HostingInstitution
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
  • Bettina, Strauch
  • ContactPerson
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
References
  • Strauch, B., Richter, H., Zimmer, M., Giese, R., & Zirkler, A. (2022). Underground in-situ investigation of spatial and temporal changes of rock salt integrity in the marginal area of a natural CO2-rich cavernous structure. Applied Geochemistry, 139, 105264. https://doi.org/10.1016/j.apgeochem.2022.105264
  • 10.1016/j.apgeochem.2022.105264
  • IsSupplementTo
  • Zimmer, M., Strauch, B., Zirkler, A., Niedermann, S., & Vieth-Hillebrand, A. (2020). Chemical and Isotopic Composition of Gas in Salt Beds of a Potash Mine [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.3.1.2020.004
  • 10.5880/GFZ.3.1.2020.004
  • Cites
Contact
  • Bettina, Strauch
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
Citation Strauch, B., Zimmer, M., Kujawa, C., & Zirkler, A. (2022). Spatial and temporal changes of pressure and CO2 concentration in isolated borehole sections in the marginal area of a cavernous structure - an underground in-situ study in rock salts [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.3.1.2022.003
Geo location(s)
  • Werra-Fulda mining district, Germany
Spatial coordinates
  • eLong 10.677
  • nLat 51.1431
  • sLat 50.319
  • wLong 9.30369