Predicting Effects of Subsidence on Landfill Caps

by A. W. Bredariol, Drexel Univ, Phil, United States,
J. Larralde, Drexel Univ, Phil, United States,
J. P. Martin, Drexel Univ, Phil, United States,
C. A. Fiori, Drexel Univ, Phil, United States,



Document Type: Proceeding Paper

Part of: Probabilistic Mechanics and Structural and Geotechnical Reliability

Abstract:

Groundwater protection at unlined, closed landfills relies upon limiting cover or cap infiltration. Depressions on closed landfills indicate infiltration from reduced runoff and loss of cap integrity. Several properties which do not vary in unison affect subsidence response. Finite element analysis indicated complex response, including factors in the axisymmetric case that resist crack opening. The key parameter in crack initiation appears to be tensile strength.



Subject Headings: Soil pollution | Infiltration | Cracking | Ultimate strength | Groundwater pollution | Soil analysis | Land subsidence | Landfills

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