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Research of Rock Mass Gas Conductivity with respect to Geological Disposal and the EDZ

  • Jiri Svoboda (a1) and Jan Smutek (a1)

Abstract

The geological disposal of radioactive waste, based on a multi-barrier concept wherein the first barrier consists of the metal waste container and the final barrier the host rock, is widely considered the only viable solution.

Following disposal the risk will remain of the formation of gases due to corrosion and other processes. Research being carried out at the Czech Technical University in Prague (CTU), Centre of Experimental Geotechnics (CEG), the Josef underground laboratory as part of FORGE and other projects focuses on gas migration in underground areas and especially within the EDZ.

The research consists of several stages including the design of gas conductivity equipment destined for in-situ testing and the gas conductivity tests proper. An important part of the research involves the evaluation of a potential correlation between rock mass classification parameters and gas conductivity; a certain degree of correlation was identified in earlier research projects. The discovery of such a correlation would greatly assist in the future design of underground gas storage and deep radioactive waste facilities.

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References

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1. Morávek, P., “ Gold Deposits in Bohemia ”, Prague, Czech Geological Survey, 1992, pp. 6572.
2. Palmstrøm, A., “Combining the RMR, Q and RMi classification systems”, 2009, 25p., Available from: <http://www.rockmass.net/class/Combining_RMR-Q-RMi.pdf>.10.1016/j.tust.2008.12.002
3. Barton, N., Lien, R. and Lunde, J., “ Engineering classification of rock masses for the design of tunnel support ”, Norwegian geotechnical institute, 1974, 48p., ISBN 82-546-0034-1.
4. Palmstrøm, A., “RMi – a rock mass characterization system for engineering purposes”, PhD-thesis, University of Oslo, 1995, 400p.

Research of Rock Mass Gas Conductivity with respect to Geological Disposal and the EDZ

  • Jiri Svoboda (a1) and Jan Smutek (a1)

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