Compaction of lignite: a review of methods and results

Czasopismo : Acta Geologica Polonica
Tytuł artykułu : Compaction of lignite: a review of methods and results

Autorzy :
Gaetani, M.
Dipartimento di Scienze della Terra, Universita’ di Milano, Italia, maurizio.gaetani@unimi.it,
Meço, S.
Fakulteti Gjeologji-Miniera,Tirana, Albania, smeco_2001@yahoo.com,
Rettori, R.
Dipartimento di Scienze della Terra, Universita’ di Perugia, Italia, rrettori@unipg.it,
Henderson, C. M.
Department of Geoscience, University of Calgary, Canada, cmhendr@ucalgary.ca,
Tulone, A.
Dipartimento di Scienze della Terra, Universita’ di Perugia, Italia, accursio.tulone@hotmail.it,
Łuczyński, P.
Institute of Geology, University of Warsaw, Al. Żwirki i Wigury 93; PL-02-089 Warszawa, Poland, Piotr.Luczynski@uw.edu.pl,
Kozłowski, W.
Institute of Geology, University of Warsaw, Al. Żwirki i Wigury 93; PL-02-089 Warszawa, Poland, Wojciech.Kozlowski@uw.edu.pl,
Skompski, S.
Institute of Geology, University of Warsaw, Al. Żwirki i Wigury 93; PL-02-089 Warszawa, Poland, Skompski@uw.edu.pl,
Oszczypko, N.
Jagiellonian University, Institute of Geological Sciences, Oleandry 2a, 30-063 Kraków, Poland, nestor.oszczypko@uj.edu.pl,
Ślączka, A.
Jagiellonian University, Institute of Geological Sciences, Oleandry 2a, 30-063 Kraków, Poland, a.slaczka@uj.edu.pl,
Oszczypko-Clowes, M.
Jagiellonian University, Institute of Geological Sciences, Oleandry 2a, 30-063 Kraków, Poland, m.oszczypko-clowes@uj.edu.pl,
Olszewska, B.
Polish Geological Institute, Carpathian Branch, Skrzatów 1, 31-560 Kraków, Poland,
Jeans, C. V.
Department of Geography, University of Cambridge, Downing Place, Cambridge CB2 3EN, U.K., cj302@cam.ac.uk,
Wray, D. S.
Department of Earth and Environment Sciences, University of Greenwich, Pembroke, Chatham Maritime, Kent ME4 4TB, U.K.,
Williams, C. T.
Department of Mineralogy, Natural History Museum, Cromwell Road, London SW7 5BD, U.K.,
Widera, M.
Institute of Geology, Adam Mickiewicz University, Maków Polnych 16, 61-606 Poznań, Poland, widera@amu.edu.pl,
Abstrakty : The published peat:coal compaction ratios range from 1.1:1 to 60:1 and from 1.1:1 to 11:1 for lignites. These probably represent realistic end-member values for the degree of compaction during the transformation of peat into lignite and then to coal. Hence, in many cases, the obtained values of the compaction ratio are under- or overestimated with reference to the entire coal seam. This study focuses on the changes of thickness between a peat bed and the resulting lignite seam. The fundamental question is how many times the thickness of the peat bed, prior to covering the mire by the overburden, was greater than the present-day thickness of the lignite seam. The majority of methods reported in this paper cannot be used directly to quantify the amount of compaction of the lignite seam. In this context, the only category of methods which allow a direct estimation of the peat:lignite compaction ratio are the so-called stratigraphic methods. Therefore, based on comparison of the initial peat bed thickness with lignite seam thickness, the most accurate peat:lignite compaction ratio ranges from 2:1 to 4:1.

Słowa kluczowe : torf, węgiel brunatny, węgiel, proces zagęszczania, wskaźnik zagęszczenia, peat, lignite, coal, compaction process, compaction ratio, peat:lignite compaction ratio,
Wydawnictwo : Faculty of Geology of the University of Warsaw
Rocznik : 2015
Numer : Vol. 65, no. 3
Strony : 367 – 378
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DOI :
Cytuj : Gaetani, M. ,Meço, S. ,Rettori, R. ,Henderson, C. M. ,Tulone, A. ,Łuczyński, P. ,Kozłowski, W. ,Skompski, S. ,Oszczypko, N. ,Ślączka, A. ,Oszczypko-Clowes, M. ,Olszewska, B. ,Jeans, C. V. ,Wray, D. S. ,Williams, C. T. ,Widera, M. , Compaction of lignite: a review of methods and results. Acta Geologica Polonica Vol. 65, no. 3/2015
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