Municipal solid waste effective stress analysis

Shariatmadari, Nader; Machado, Sandro Lemos; Noorzad, Ali; Karimpour-Fard, Mehran

doi:10.1016/j.wasman.2009.07.009

Cited by 48 publications

(21 citation statements)

References 13 publications

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“…Effective stress at the average height of the water table was calculated using Eq. (13) below, proposed by Shariatmadari et al (2009) for materials with compressible solid particles…”

Section: Msw Global Water Balance (Use Of Soil Cover Layer)mentioning

confidence: 99%

An attempt to perform water balance in a Brazilian municipal solid waste landfill

2012

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This paper presents an attempt to model the water balance in the metropolitan center landfill (MCL) in Salvador, Brazil. Aspects such as the municipal solid waste (MSW) initial water content, mass loss due to decomposition, MSW liquid expelling due to compression and those related to weather conditions, such as the amount of rainfall and evaporation are considered. Superficial flow and infiltration were modeled considering the waste and the hydraulic characteristics (permeability and soil-water retention curves) of the cover layer and simplified uni-dimensional empirical models. In order to validate the modeling procedure, data from one cell at the landfill were used. Monthly waste entry, volume of collected leachate and leachate level inside the cell were monitored. Water balance equations and the compressibility of the MSW were used to calculate the amount of leachate stored in the cell and the corresponding leachate level. Measured and calculated values of the leachate level inside the cell were similar and the model was able to capture the main trends of the water balance behavior during the cell operational period.

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“…Effective stress at the average height of the water table was calculated using Eq. (13) below, proposed by Shariatmadari et al (2009) for materials with compressible solid particles…”

Section: Msw Global Water Balance (Use Of Soil Cover Layer)mentioning

confidence: 99%

An attempt to perform water balance in a Brazilian municipal solid waste landfill

2012

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“…Clark (1986, 1990) were pioneers in waste mechanics and they carried out several research projects to form a sound engineering basis for stability analysis of landfills. Jessberger and Kockel (1993), Gabr and Valero (1995), Grisolia et al (1995), Kölsch (1995), Kavazanjian et al (1995), Grisolia and Napoleoni (1996), Manassero et al (1996), Mahler et al (1998), Mazzucato et al(1999), Kavazanjian (1999), Carvalho (1999), Pelkey et al (2001), Machado et al (2002Machado et al ( , 2008, Caicedo et al (2002a,b), Mahler and De Lamare Netto (2003), Xiang-rong et al (2003), Vilar and Carvalho (2004), Towhata et al (2004), Zekkos (2005), Nascimento (2007), Reddy et al (2009a,b), Karimpour-Fard (2009) and Shariatmadari et al (2009), are among the researchers in the field of waste mechanics who have tried to provide a clearer vision of the mechanical behavior of MSW materials. In spite of these valuable contributions there remain a number of issues in waste mechanics for which complementary studies are required.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the geotechnical properties of MSW in two Brazilian landfills

et al. 2010

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The characteristics of municipal solid waste (MSW) play a key role in many aspects of waste disposal facilities and landfills. Because most of a landfill is made up of MSW, the overall stability of the landfill slopes are governed by the strength parameters and physical properties of the MSW. These parameters are also important in interactions involving the waste body and the landfill structures: cover liner, leachate and gas collection systems. On the other hand, the composition of the waste, which affects the geotechnical behavior of the MSW, is dependent on a variety of factors such as climate, disposal technology, the culture and habits of the local community. It is therefore essential that the design and stability evaluations of landfills in each region be performed based on the local conditions and the geotechnical characteristic of the MSW. The Bandeirantes Landfill, BL, in São Paulo and the Metropolitan Center Landfill, MCL, in Salvador, are among the biggest landfills in Brazil. These two disposal facilities have been used for the development of research involving waste mechanics in recent years. Considerable work has been made in the laboratory and in the field to evaluate parameters such as water and organic contents, composition, permeability, and shear strength. This paper shows and analyzes the results of tests performed on these two landfills. The authors believe that these results could be a good reference for certain aspects and geotechnical properties of MSW materials in countries with similar conditions.

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“…The expansion of old, poorly controlled landfills and the construction of gly higher landfills, in an attempt to extend the lifespan of these structures, has led to the occurrence of numerous fatalities. It is often the unknown aspects of the of undrained waste which figure among the possible causes of these events [40].…”

Section: Discussionmentioning

confidence: 99%

Influence of the Design on Slope Stability in Solid Waste Landfills

Mendoza

Esteban-Altabella²,

García-Darás³

et al. 2013

EARTH

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This paper presents, firstly, the influence of the geometry of a slope in the safety factor (SF). In order to do this, the SF is compared among three types of slopes: with berms every 7 m high and a dam at the toe, without berms and with a dam at the toe, and without berms nor dams. It was observed that, for the same inclination, the berms do not significantly influence the stability. However, the construction of an earth dam at the base increases safety, especially with little height and slope in waste with poor mechanical properties. On the other hand, a set of diagrams to learn, quickly and easily, the safety factor of a landfill slope has been developed. Thus, this set of diagrams allows calculations from the SF height (from 17 to 80 m) and slope inclination (from 45° to 14°) with values of effective cohesion of the waste (C'o) from 1 to 3 t/m 2 and effective friction angle (Φ') of 10° to 25°.

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Municipal solid waste effective stress analysis

Cited by 48 publications

References 13 publications

An attempt to perform water balance in a Brazilian municipal solid waste landfill

An attempt to perform water balance in a Brazilian municipal solid waste landfill

Evaluation of the geotechnical properties of MSW in two Brazilian landfills

Influence of the Design on Slope Stability in Solid Waste Landfills

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