DBPapers
DOI: 10.5593/SGEM2016/B11/S02.111

LABORATORY TESTS OF DUMP MATEIAL FROM COAL MINE

H. Lahuta, L.J. Andrade Pais, T. Petrasova, N. Phi
Tuesday 6 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-55-1 / ISSN 1314-2704, June 28 - July 6, 2016, Book1 Vol. 1, 879-886pp

ABSTRACT
This paper presents results from a series of compression and undrained triaxial tests to study the mechanical behavior of Dump clay from North of Bohemia. This comes from embankment formed by digging the ground (altered claystone) up to the level of coal mining which is in a subhorizontal stratigraphic layer. Potential static behaviour was observed in undrained tests for high confinement stress. Structural collapse was observed. This collapse is characterized by an unexpected large decrease in deviator and mean effective stress. The soils formed have strength properties potentially dangerous. These concepts can improve the use of these kinds of soils in geotechnical engineering works.

Keywords: shear box test, triaxial test, dump material, laboratory measurement