Abstract
Measurements of acoustic emission have been performed since 1994 in a repository of nuclear waste (a former salt mine) in combination with deformation measurements in order to monitor the mine structure regarding stability and the integrity of the rock mass. Measuring acoustic emissions, the generation of micro- and macrocracks in the rock mass can be detected. Therefore this method provides the identification and observation of high levels of load and of load changes in large-scale. Generally, an analysis in detail requires the inclusion of additional measurements and numerical calculations. The generation of microcracks and macrocracks leads to a volume increase, which can be quantified by deformation measurements. The results show that areas of high acoustic emission activity are in good accordance with zones of larger deformations.
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Acknowledgments
The measurements are performed on behalf of “Bundesamt für Strahlenschutz” (German Federal Office for Radiation Protection). Part of the data was provided by „Deutsche Gesellschaft zum Bau und Betrieb von Endlagern für Abfallstoffe“. Since 18 years the “Gesellschaft für Materialprüfung und Geophysik” is a reliable partner in the development of measurement systems and analysis software for AE measurements and also in scientific discussions.
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Hesser, J., Kaiser, D., Schmitz, H., Spies, T. (2015). Measurements of Acoustic Emission and Deformation in a Repository of Nuclear Waste in Salt Rock. In: Lollino, G., et al. Engineering Geology for Society and Territory - Volume 6. Springer, Cham. https://doi.org/10.1007/978-3-319-09060-3_99
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DOI: https://doi.org/10.1007/978-3-319-09060-3_99
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