Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 222222
Loughborough University

Centre for Innovative and Collaborative Construction Engineering


Dr Gary Fowmes


Analysis of steep sided landfill lining systems

Project Title

Analysis of steep sided landfill lining systems


Golder Associates (UK) Ltd


Professor N Dixon
Dr A El Hamalawi

Dr DRV  Jones
Mr Julian Jones

Director of Research:
Dr PR Fleming

Research Period

2003 - 2007

Analysis of steep sided landfill lining systems


The lining of landfill sites is essential to ensure that contaminated leachate does not escape into the groundwater systems. The integrity of steep sided lining systems has been highly problematic in the past, meaning steep sided voids can not be used to their optimum waste storage capacity.

Aims and Objectives

The specific aims and objectives of the project include:

• Investigation of shear interface data variability
• Analysis of proposed steep wall lining systems
• Implementation and monitoring of a specific system

Method and Current Status

All of the available data on shear strength of Geosynthetic-Geosynthetic and Geosynthetic-Soil interfaces has been collected and analysed to asses its variability. The variability data is to be used as the basis for a probabilistic risk assessment of theoretical landfill slopes.

As the project has only recently begun, the overall methodology is yet to be confirmed.

Benefits/Expected Outcomes

If successful this project would allow steep sided voids, such as decommissioned quarries, to be safely used as waste repositories, with minimal intrusion of the liner into the available void space

Fowmes, G.J., Dixon, N. and Jones, D.R.V. (2007). Validation of a numerical modelling technique for multilayered geosynthetic landfill lining systems. Geotextiles and Geomembranes. . Vol. 26, 109–121. DOI: doi:10.1016/j.geotexmem.2007.09.003

Fowmes, G.J., Dixon, N. and Jones, D.R.V. (2007). Landfill stability and integrity: the UK design approach. ICE J. of Waste and Resource Management. Vol. WR2, 51–61.

Dixon, N., Jones, D.R.V. and Fowmes, G.J. (2006). Interface shear strength variability and its use in reliability-based landfill stability analysis. Geosynthetics International. 2006, Vol. 13, No1. 1- 14.

Fowmes, G.J., Dixon, N. and Jones, D.R.V. (2008). The influence of horizontal welded seams of geomembrane tension in a steep sided landfill lining system., Proc EuroGeo4, Edinburgh, September 7-10 2008.

Fowmes, G.J., Sia, A., Zhang, B., Dixon, N and Jones, D.R.V. (2007a). Numerical analysis of the stability and integrity of multilayer landfill lining system. Proc GEE07: 7th Japanese-Korean-French Seminar "Geo-Environmental Engineering". Grenoble, France, May 22-24th 2007. 69-74.

Dixon, N., Zhang, B., Fowmes, G.J., Sia, A., Langer, U. El-Hamalawi, A. and Jones, D.R.V. (2006a). Landfill Engineering: Waste Mechanics and Design Practice. Asian-European Sustainable Urban Development 2006, Chongqing China.

Fowmes, G.J. … et al. (2006). Modelling of Lining System Integrity. Proceedings 8th International Conference on Geosynthetics, Yokohama, Japan, September 18-22.

Fowmes, G.J., Dixon, N., and Jones, D.R.V. (2006). Use of randomly reinforced soils in barrier systems. 5th International Congress on Environmental Geotechnics, Cardiff, UK, June 2006, 709 – 716.

Jones, D.R.V, Fowmes, G.J. and Dixon, N. (2005). A Method for Assessing Stability and Integrity of Landfill Lining Systems Golder Associates Engineering Group International Symposium, Pheonix.

Fowmes, G.J. … et al. (2005). Modelling of Waste Barrier Interaction. International Workshop “Hydro-Physico-Mechanics of Landfills” Grenoble, France, March 2005.



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Loughborough University
LE11 3TU

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