Sensitivity Analysis on Stability Parameters in Landfill

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RESEARCH ARTICLE

Sensitivity Analysis on Stability Parameters in Landfill

The Open Construction and Building Technology Journal 19 Aug 2015 RESEARCH ARTICLE DOI: 10.2174/1874836801509010108

Abstract

To study the stability of waste body failure in landfill, the landfill was divided into two parts: an active wedge and a passive wedge. A limit equilibrium analysis was used to calculate the safety factor of stability in landfill. The parameters which affected the stability of the landfill were discussed. Sensitivity curves of each parameter were proposed and effect trends of various parameters on safety factor were analyzed. Cohesion c and internal friction angle фs increases linearly with the safety factor. The safety factor decreases with increasing slope angle β and filled height H. The safety factor of after landfill settlement was higher than the safety factor of settlement which did not occur. It increases the overall stability about 16%.

Keywords: Cohesion, filled height, internal friction angle, landfill, safety factor, sensitivity analysis, settlement, stability.