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Validation of a numerical modelling technique for multilayered geosynthetic landfill lining systems

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posted on 06.09.2012 by Gary Fowmes, Neil Dixon, D. Russell V. Jones
It has become common practice to conduct numerical analyses to assess the stability and integrity of side slope landfill lining systems; however, information that can be used to validate such models is extremely limited. This paper contains data from a series of large-scale laboratory tests containing geosynthetic elements of a multilayered lining system exposed to downdrag forces from a compressible synthetic waste material (rubber crumb). These data are compared to the results from numerical analysis of the same problem. The numerical results are from initial best estimate analyses, with interface and synthetic waste properties derived from a laboratory testing programme and geosynthetic material properties from manufacturers. The observed trends of tensile stresses in the geosynthetics and relative displacements at interfaces in the laboratory testing are reproduced by the numerical models to an acceptable degree of accuracy that would be appropriate, using site-specific input data, for use in commercial design.

History

School

  • Architecture, Building and Civil Engineering

Citation

FOWMES, G.J., DIXON, N. and JONES, D.R.V., 2008. Validation of a numerical modelling technique for multilayered geosynthetic landfill lining systems. Geotextiles and Geomembranes, 26 (2), pp. 109 - 121.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publication date

2008

Notes

This article was published in the journal, Geotextiles and Geomembranes [© Elsevier Ltd.] and the definitive version is available at: http://www.sciencedirect.com/science/article/pii/S0266114407000751

ISSN

0266-1144

Language

en

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