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PREDICTION/MITIGATION OF SUBSIDENCE DAMAGE TO HAZARDOUS WASTE LANDFILL COVERS
Citation:
Gilbert, P. AND W. Murphy. PREDICTION/MITIGATION OF SUBSIDENCE DAMAGE TO HAZARDOUS WASTE LANDFILL COVERS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-87/025.
Description:
Characteristics of Resource Conservation and Recovery Act hazardous waste landfills and of landfilled hazardous wastes have been described to permit development of models and other analytical techniques for predicting, reducing, and preventing landfill settlement and related cover damage by subsidence. Settlement of landfills with containerized wastes is more difficult to predict because the containerized wastes may remain relatively undeformed until the containers degrade and collapse. bulk waste (monofill) landfills can be analyzed by consolidation theory. The potential for differential settlement can be analyzed by treating the final cover as a beam and determining the tensile stresses. Differential settlement can also be analyzed by determining the deformation of two or more central columns. Damage to the final cover by differential settlement can be minimized by compacting wastes during placement, by eliminating void space within the landfill, by stabilizing liquids before placement, by not disposing of waste in containers, and by adjusting cover component specifications to minimize the effects of tensile strain.