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High-density bimodal bentonite blends for hydraulic sealings at the Ibbenbüren coalmine

  • Felicitas Wolters (a1), Wiebke Baille (a2), Katja Emmerich (a3), Eva Schmidt (a4), Christian Wolters (a1), Franz Königer (a3), Jürgen Kunz (a5), Volker Krase (a6) and Matthias Schellhorn (a4)...

Abstract

The two high-pressure water-retaining dams at the Ibbenbüren coalmine in Münsterland (Germany) have to perform reliably under the induced tension caused by further exploitation of the current mining area. The load-bearing and the sealing functions of the new barriers were separated and new sealing materials were developed. An innovative multilayer sealing system of bentonite and sandwiched equipotential layers (SANDWICH) supporting homogeneous swelling and sealing, independent of formation water (Nüesch et al., 2002), was applied in this project. A testing program of strain-controlled swelling pressure tests on compacted bentonite specimens and on a bentonite/sand mixture was conducted to ensure an adequate potential for swelling-pressure development.

The measurements under constant volume for dry densities between 1.45 g/cm3 and 1.67 g/cm3 showed an evolving swelling pressure between 1.04 and 1.8 MPa for 100% bentonite samples. Straincontrolled oedometer tests for zero strain and step-wise applied strain up to 2% revealed that a sufficient magnitude of swelling pressure existed at maximum applied strain.

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Copyright

Copyright © The Mineralogical Society of Great Britain and Ireland 2015 This is an Open Access article, distributed under the terms of the Creative Commons Attribution license. (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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References

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Agus, S.S. (2005) An Experimental Study on Hydro-Mechanical Characteristics of Compacted Bentonite-Sand Mixtures. Dissertation, Bauhaus-University, Weimar, Germany.
Baille, W., Tripathy, S. & Schanz, T. (2010) Swelling pressures and one-dimensional compressibility behaviour of bentonite at large pressures. Applied Clay Science, 48, 324333.10.1016/j.clay.2010.01.002
Bucher, F. (1986) Quelldruck von hochverdichteten Bentoniten. Technischer Bericht 84-18, 53 (NAGRA, editor). Institut für Grundbau und Bodenmechanik, ETH Zürich, Switzerland. http://www.nagra.ch/de/cat/publikationen/technischeberichte-ntbs/ntbs-1985-1986/downloadcenter.htm
Bucher, F. & Müller-Vonmoos, M. (1987) Bentonit als technische Barriere bei der Endlagerung hochradioak-tiver Abfälle. Pp. 51-64 in: Tonmineralogie und Bodenmechanik (H.J. Lang, editor). ETH, Zürich, Switzerland.
Butz, H.P. (2002) Jahresbericht 2000/2001. In: Gesellschaft für Anlagen und Reaktorsicherheit (GRS) mbH. http://www.grs.de/sites/default/files/pdf/GRS-Annual-Report_2000_2001.pdf
Emmerich, K., Kemper, G., Königer, F., Schlaeger, S., Gruner, M., Gaßner, W., Hofmann, M., Nüesch, R. & Schuhmann, R. (2009) Saturation kinetics of a multilayer hydraulic sealing system exposed to rock salt brine. Vadose Zone Journal, 8, 332342.10.2136/vzj2008.0094
DIN 18130 (1998) Baugrund - Untersuchung von Bodenproben; Bestimmung des Wasserdurchlässigke-itsbeiwerts. Deutsches Institut für Normung, p. 20.
Gattermann, J.H. (1998) Theorie und Modellversuch für ein Abdichtungsbauwerk aus hochverdichteten Bentonitformateinen. Geotechnik in Forschung und Praxis, WBI Print 2, 216 S. Verlag Glückauf GmbH, Essen, Germany.
Goerke-Mallet, P. & Clostermann, M. (2011) Hochdruck-dämme unter Abbaueinwirkung-Maßnahmen zur Erhaltung der Gebrauchstauglichkeit. In: Energie und Rohstoffe Freiberg, Germany.
Herbert, H.-J. & Moog, H.C. (2002) Untersuchungen zur Quellung von Bentoniten in hochsalinaren Lösungen — Abschlussbericht. In: Gesellschaft für Anlagen und Reaktorsicherheit (GRS 179) mbH GRS. http://www.grs.de/sites/default/files/pdf/GRS-179.pdf
Kennedy, K., Verfuss, F. & Plötze, M. (2003) Engineered barrier emplacement experiment in Opalinus clay (EB) - Granular Material Backfill. Product Documentation, 197. NAGRA-DMT-ETH.
Kunz, J., Clostermann, M., Schanz, T. & Heimer, S. (2014) Untertägige Bauwerke unter Gebirgsbewegung — eine Herausforderung an die konstruktive Durchbildung. Pp. 73-86 in: Beiträge zum RuhrGeo Tag 2014 - Ende des Steinkkohlenbergbaus im Ruhrrevier: Realität und Perspektiven für die Geotechnik (T. Schanz, editor). Heft 50, Schriftenreihe des Lehrstuhls für Grundbau, Boden - und Felsmechanik, Bochum, Germany.
Madsen, F.T. (1998) Clay mineralogical investigations related to nuclear waste disposal. Clay Minerals, 33, 109129.10.1180/000985598545318
Martino, J.B., Dixon, D.A., Holowick, B.E. & Kim, C.-S. (2011) Enhanced Sealing Project (ESP): Seal con-struction and instrumentation report (Limeted A.E.o. C. editor). APM-REP-01601-003, Nuclear Waste Management Organisation. http://www.nwmo.ca/publications?media_file_id=1876
Meier, L.P. & Kahr, G. (1999) Determination of the cation exchange capacity (CEC) of clay minerals using the complexes of copper (II) ion with triethylenetetramine and tretraethylenepentamine. Clays and Clay Minerals, 47, 386388.10.1346/CCMN.1999.0470315
Naundorf, W. & Wollenberg, R. (1992) Herstellung von Bentonit-Granulat mit hoher Schüttdichte zur Bohrlochabdichtung NAGRA Technischer Bericht 92-06, 40. http://www.nagra.ch/data/documents/database/dokumente/$default/Default%20Folder/Publikationen/NTBs%201991-1993/d_ntb92-06.pdf
Nüesch, R., Brandelik, A., Hübner, C. & Schuhmann, R. (2002) Verschlussstopfen und Verfahren zum Verschließen von untertägigen Hohlräumen. Patent No. 10149972, Germany.
Oscarson, D.W. & Dixon, D.A. (1989) The effect of stea. onmontmorillonite. Applied Clay Science, 4, 279292.10.1016/0169-1317(89)90035-5
Sitz, P., Gruner, M. & Rumohorst, M. (2003) Bentonitdichtelemente für langzeitsichere Schachtverschlüsse im Salinar. Kali und Steinsalz, 3, 613.
Van Geet, M., Bastiaens, W., Volckaert, G., Weetjens, E., Sillen, X., Maes, N., Imbert, C., Billaud, P.,Touzé, G., Filippi, M., Plas, F., Villar, M.V., Garcia-Gutiérrez, M., Mingarro, M., Gens, A. & Vallejan, B. (2009) RESEAL II: A large-scale in situ demonstration test for repository sealing in an argillaceous host rock — Phase II, in: Nuclear Science and Technology (Commission, E. ed.) ftp://ftp.cordis.europa.eu/pub/fp6-euratom/docs/reseal-2-final-report-july-2009_en.pdf
Wang, Q., Tang, A., Cui, Y., Delage, P., Barnichon, I. & Ye, W. (2013) The effects of technological voids on the hydro-mechanical behaviour of compacted bentonite-sand mixture. Soils and Foundations, 53, 232245.10.1016/j.sandf.2013.02.004
Wolters, F., Lagaly, G., Kahr, G., Nüesch, R. & Emmerich, K. (2009) A comprehensive characterisation of dioctahe-dral smectites. Clays and Clay Minerals, 57, 115133.10.1346/CCMN.2009.0570111

Keywords

High-density bimodal bentonite blends for hydraulic sealings at the Ibbenbüren coalmine

  • Felicitas Wolters (a1), Wiebke Baille (a2), Katja Emmerich (a3), Eva Schmidt (a4), Christian Wolters (a1), Franz Königer (a3), Jürgen Kunz (a5), Volker Krase (a6) and Matthias Schellhorn (a4)...

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