Slope stability and bearing capacity of landfills and simple on-site test methods

Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA
Atsushi YamawakiKiyoshi Omine

Abstract

This study discusses strength characteristics (slope stability, bearing capacity, etc.) of waste landfills through on-site tests that were carried out at 29 locations in 19 sites in Japan and three other countries, and proposes simple methods to test and assess the mechanical strength of landfills on site. Also, the possibility of using a landfill site was investigated by a full-scale eccentric loading test. As a result of this, landfills containing more than about 10 cm long plastics or other fibrous materials were found to be resilient and hard to yield. An on-site full scale test proved that no differential settlement occurs. The repose angle test proposed as a simple on-site test method has been confirmed to be a good indicator for slope stability assessment. The repose angle test suggested that landfills which have high, near-saturation water content have considerably poorer slope stability. The results of our repose angle test and the impact acceleration test were related to the internal friction angle and the cohesion, respectively. In addition to this, it was found that the air pore volume ratio measured by an on-site air pore volume ratio test is likely to be related to various strength parameters.

Citations

Mar 17, 2018·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Afshin KhoshandHamidreza Kamalan
Jul 9, 2021·Environmental Science and Pollution Research International·Cláudio Luis de Araújo NetoVeruschka Escarião Dessoles Monteiro
Jul 25, 2021·Waste Management·Purbashree SarmahShimon Ideguchi

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