Design of a landfill final cover system. Issue 3 (1st June 2010)

• Record Type: Journal Article
• Authors: Newman, E.J.; Stark, T.D.
• Is Part Of: Geosynthetics international. Volume 17:Issue 3(2010)
• Page Start: 124
• Page End: 131
• Publication Date: 2010-06-01
• Subjects: KEYWORDS: Geosynthetics, Geosynthetic-lined slopes, Interface shear strength, Waste containment, Strength, Stability, Shearbox test, Failure, Final cover system, Landfill; Geosynthetics -- Periodicals; Geosynthetics; Periodicals; 624.1892
• DOI: 10.1680/gein.2010.17.3.124
• Languages: English
• ISSNs: 1072-6349

Abstract

Abstract : ABSTRACT: This paper describes a final cover slope failure at a municipal solid waste containment facility. The lessons learned from this case history include: (i) slope stability analyses should be conducted whenever field conditions differ from initial design assumptions, such as a steeper slope and different geosynthetics; (ii) published values of interface strength/friction angle should not be used for final design, instead site-specific interface testing should be used; (iii) final cover slope angle should not exceed the lowest geosynthetic interface strength in the cover system to prevent tension in the geosynthetics and/or progressive slope failure of the slope; and (v) designers should resist the temptation to utilise a pre-existing final cover design without performing the necessary field reconnaissance, interface testing, analysis, and design for the new site.