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Structural performance of a steep slope landfill lining system
journal contribution
posted on 2009-05-12, 10:43 authored by Neil Dixon, Samson Ng'ambi, D. Russell V. JonesThe stability and integrity of a landfill barrier, in both the
short and the long term, are vital to performance as a
containment system for leachate and landfill gas, and are
a requirement of the UK permitting process. The
structural performance of steep, non-self-supporting
barrier systems depends in part on the adjacent waste
body for lateral support. This paper presents the results
of an investigation into structural performance during
construction of a typical UK mineral steep slope landfill
lining system. Instrument installation, monitoring and
results are presented. Measurements and observations
have shown shear and overturning modes of clay barrier
failure, leading to loss of integrity. Normal stresses
measured at the waste/barrier interface demonstrate
that waste adjacent to the barrier provides low and
variable lateral support. It is concluded that this has led
to the observed failure mechanisms. Temporary
conditions during phased construction are shown to be
critical. This investigation has demonstrated that current
UK municipal solid waste, placed using standard
practices, cannot by itself provide sufficient support to
ensure the integrity of a clay barrier in a steep slope
lining system. Waste/barrier interaction must be
considered as part of the design process.
History
School
- Architecture, Building and Civil Engineering
Citation
DIXON, N., NG'AMBI, S. and JONES, D.R.V., 2004. Structural performance of a steep slope landfill lining system. Proceedings of ICE, Geotechnical Engineering, 157(GE3), pp. 115–125.Publisher
© Institution of Civil Engineers / Thomas TelfordVersion
- VoR (Version of Record)
Publication date
2004Notes
This article was published in the journal, Proceedings of ICE, Geotechnical Engineering [© Institution of Civil Engineers / Thomas Telford] and the definitive version is available at: http://www.thomastelford.com/journals/ISSN
1353-2618;1751-8563Language
- en