RESEARCH ARTICLE


Sensitivity Analysis on Stability Parameters in Landfill



Sun Hong-Jun*, Fan Yan-Chao, Zhao Li-Hong
College of Civil Engineering & Architecture, Liaoning University of Technology, Jinzhou, Liaoning 121001, China


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Creative Commons License
© 2015 Hong-jun et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the College of Civil Engineering & Architecture, Liaoning University of Technology, Jinzhou, Liaoning 121001, China; Tel: 13304062944; E-mail: Sunhongjun_2006@163.com


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.