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- W2969759106 abstract "In light of the huge landfill failures in South-East Asia in the past 10 years, namelyfailures of the Payatas and Leuwigajah landfills in 2000 and 2005 respectively, thenecessity of assessing the stability of Malaysian landfills is signified. This projectaims to investigate the static and seismic stability of the Bukit Tagar SanitaryLandfill, the largest Malaysian sanitary landfill, serving 8 million people with adesign capacity of 120million m3 to operate for 40 years. This study can be veryinsightful in identifying the extent to which geotechnical and hydrologicalparameters and earthquakes can affect the stability of landfills in Malaysia. Mostsignificantly, the objective is to assess how susceptible Malaysian landfills are tostability failures under both static and seismic conditions. Numerous fieldinvestigations were conducted indicating proper incorporation of stability enhancingpractices in Malaysian sanitary landfills. Static and seismic stability of the landfillwere simulated using the geotechnical software, GeoStudio. Sensitivity analysis wascarried out to study the effects of water level and waste's unit weight and shearstrength parameters (i.e. friction angle and cohesion) on the stability of the BukitTagar landfill. These analyses indicated an adequate stability design of the landfill.However, inadequate drainage together with heavy precipitations may lead tostability failures. Generally, landfill stability is sensitive to water levels to a verylarge extent, to waste unit weight to a fair extent and to waste shear strength to alesser extent. This signifies the vitality of good drainage and best compactionpractices for the waste to increase landfill stability. Frequency analysis indicated thatan earthquake with a return period of 100 years in Malaysia would be of a localmag1_1itude of7.99. Seismic stability simulations using the equivalent-linear dynamicanalysis showed that Bukit Tagar landfill had an acceptable stability design indrained and likely undrained conditions against this 7.99 magnitude earthquake. Thenecessity of proper drainage for stability of the landfill is highlighted once more bythe critical FS values encountered for the undrained condition in the seismic analysis.Keywords: Landfill stability, Earthquake, South East Asia, Malaysian landfill, BukitTagar landfill, Municipal Waste" @default.
- W2969759106 created "2019-08-29" @default.
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- W2969759106 date "2008-01-01" @default.
- W2969759106 modified "2023-09-24" @default.
- W2969759106 title "Static and Seismic Stability of the Largest Malaysian Sanitary Landfill" @default.
- W2969759106 hasPublicationYear "2008" @default.
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