Influence of the Design on Slope Stability in Solid Waste Landfills

Mendoza, Francisco J. Colomer; Esteban-Altabella, Joan; García-Darás, Ferran; Izquierdo, Antonio Gallardo

doi:10.11648/j.earth.20130202.12

Cited by 5 publications

(5 citation statements)

References 21 publications

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“…In order to know the stability of the landfill slope ( Figure 2) the tool applies the equation of the curves showed in the nomograms developed by Colomer et al (2013). To design the nomogram represented in Figure 3, soil mechanics methods and formulas were applied (Taylor, 1948;Janbu, 1967;Bishop, 1960).…”

Section: Landfill Slope Stabilitymentioning

confidence: 99%

Application of inert wastes in the construction, operation and closure of landfills: Calculation tool

2017

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Waste from construction and demolition activities represents one of the highest volumes of waste in Europe. 500 million tonnes are produced throughout the whole EU every year. In some EU members like Spain, approximately 83 per cent of such waste is disposed in landfills. The remaining part is classified and processed in treatment facilities so that it can later be used as recycled aggregates in the construction sector (sand, gravel, aggregates, etc.) but without much commercial success. The aim of this study is to use recycled aggregates from inert wastes (IW) in the different phases of a landfill (construction, operation and closure) with the aid of a new computer tool called LABWASTE.14. This tool incorporates the mathematical relationship among the activities of the landfill and provides as a result the economic viability of using recycled aggregates compared to aggregates from quarries.Therefore, knowing the needs of aggregates in landfills (dams, drainage layers, covering layers, collection wells, etc.) may determine the amount of IW that could be recovered. These 2 calculations can be obtained from some of the data that is introduced (population, land physiography, etc.). Furthermore, the use of LABWASTE.14 makes it possible to reduce the demand for aggregates from quarries. IntroductionConstruction and demolition wastes (CDW) are a growing problem in many countries. They account for large part of the waste generated in cities and they are usually placed in landfills (Ekanayake and Ofori, 2004). CDW represents around 31% of all waste produced in the European Union (EU) (Fisher and Werge, 2009). It is nowadays acknowledged that the consumption of raw materials in the construction industry is a non-sustainable activity. It is thus necessary to reduce this consumption, and the volume of CDW dumped, by using this waste as a source of raw materials for the production of recycled aggregates (Rodrigues et al., 2013). In fact, in many EU countries a very limited amount of CDW is recycled, the greatest portion being deposited or used as fill material (Masood et al., 2002). However, recycling concrete waste will lead to a reduction in valuable landfill space and savings in natural resources (Tabsh and Abdeltatah, 2009). Because of this, in the EU, the strategic plans about waste include CDW. The European Action Plan on the Circular Economy includes a number of actions that will target market barriers in specific sectors or material streams, such as construction and demolition wastes as well as horizontal measures in areas such as innovation and investment (EU, 2015). All these regulations establish the minimum requirements for their production and management, in order to promote prevention, reuse, recycling and recovery. The EU Waste Framework Directive (Directive 2008/98/EC) introduces recycling and recovery targets to be achieved by 2020 for household waste (50%) and construction and 3 demolition waste (70%). Furthermore, recycling CDW makes it possible to achieve considerable savings on energy and...

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Section: Landfill Slope Stabilitymentioning

confidence: 99%

Application of inert wastes in the construction, operation and closure of landfills: Calculation tool

2017

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“…Se deben considerar además las condiciones climatológicas, de manera que en lugares con alta precipitación es crucial contar con sistemas suficientes para evacuación de escorrentías y drenaje. Los mayores desastres ocurridos en vertederos de RM han estado vinculados a la acumulación incontrolada de líquido en el interior y a pendientes pronunciadas, de manera que se imparten esfuerzos en la masa y se reduce su capacidad resistente hasta causar el deslizamiento y derrumbe del relleno (Colomer et al 2009, Colomer-Mendoza et al 2013, Kölsch y Ziehmann 2004.…”

Section: Inestabilidad Geotécnicaunclassified

Biorrellenos: Perspectivas Tras Dos Décadas De Experiencias en El Mundo

Cortázar

Hernández-Berriel

Mañón-Salas

2016

Rev. Int. Contam. Ambie.

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Palabras clave: relleno sostenible, pasivo ambiental, recirculación de lixiviados, biogás, biodegradación RESUMENLas palabras biorrelleno, vertedero biorreactor, vertedero sostenible, resuenan con frecuencia en las reuniones técnicas y científicas de "basurólogos" desde hace tiempo. Sin embargo todavía existen muchos mitos en torno a esta técnica que, en algunos lugares, fundamentalmente de Estados Unidos, se lleva practicando durante más de veinte años. Este trabajo presenta una síntesis del estado actual del conocimiento sobre biorrellenos. Inicia revisando la historia de esta técnica, planteada por primera vez en los años 70 y aclarando sus objetivos, que son la degradación acelerada de los residuos municipales (RM), para evitar que sean o se conviertan en pasivos ambientales, así como sus ventajas e inconvenientes. Identificado el parámetro fundamental a controlar, la humedad de los RM, han surgido, según las condiciones de aireación, biorellenos anaeróbicos, semiaeróbicos, aeróbicos e híbridos. Como guía para los nuevos proyectos que se plantean y requieren en Iberoamérica, en este trabajo se reúnen las directrices generales de diseño y operación recomendables para nuevas instalaciones de biorrellenos anaeróbicos y semiaeróbicos, incluyendo los sistemas de recirculación de lixiviados y extracción del gas generado, los cambios principales respecto a la operación de un relleno tradicional y las necesidades de seguimiento. Como ejemplos se describen: una experiencia a escala real que ha servido como referencia innovadora a nivel mundial, un modelo de biorrelleno semiaeróbico aplicable a países de desarrollo intermedio y dos casos representativos del avance en este campo en Iberoamérica. Finalmente se presentan las perspectivas de avance de la técnica mediante investigación y en cuanto a su extensión en Iberoamérica.Key words: sustainable landfill, environmental liability, leachate recirculation, biogas, biodegradation ABSTRACT Concepts like 'bioreactor landfill' or 'sustainable landfill' have been resonating in specialized technical and scientific meetings for a long time. However, there are still many myths surrounding this technique which, in some places, mainly the United States, has been practiced for over twenty years. This paper summarizes the current state of knowledge on bioreactor landfills. It begins with a review of the history of this technique, proposed in the 70s for the first time. The objective of bioreactor practices is to accelerate the degradation Rev. Int. Contam. Ambie. 32 (Especial Residuos Sólidos) 91-111, 2016

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“…Obtaining appropriate shear strength parameters is critical to the outcome of a stability analysis. The shear strength of waste material depends on depends on several factors including waste composition, degradation, moisture content and particle size [3]. Thereafter, an appropriate factor of safety must be selected.…”

Section: Introductionmentioning

confidence: 99%

Review of the waste slope stability design of a landfill site in gauteng

Zondo¹

2023

E3S Web Conf.

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The objective of this paper is to review the slope stability analysis conducted during the initial design stages of a new landfill cell that forms part of a landfill site expansion in Gauteng. The SLOPE/W slope stability software, from the Geostudio integrated software suite, was used to carry out the analysis. Initial trials revealed a significant waste slope instability, which, when further investigated, was attributed to the weak sliding interface between the smooth geomembrane and clay, the 8 m deep basin, the 46 m estimated waste height leaning on a small embankment on the northern side of the cell and the cell basin sloped in the direction of the waste sliding mass. Satisfactory results and eventually slope stability was achieved through a comprehensive optimization process which entailed modelling and running iterations of various trials of a combination of stabilizing berms, geogrids and cutting back the waste slope.

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Influence of the Design on Slope Stability in Solid Waste Landfills

Cited by 5 publications

References 21 publications

Application of inert wastes in the construction, operation and closure of landfills: Calculation tool

Application of inert wastes in the construction, operation and closure of landfills: Calculation tool

Biorrellenos: Perspectivas Tras Dos Décadas De Experiencias en El Mundo

Review of the waste slope stability design of a landfill site in gauteng

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