Abstract
In the present study, a hazardous waste (HW) landfill on a sloping ground is considered. The base profile of the landfill exhibited significant elevation difference from one end to the other. Due to the inclined base and fixed waste footprint area, the waste retaining capacity of the landfill decreases significantly in comparison to a same plain base area. As a consequence, an engineered berm is provided at the lower end to act as a stabilizing berm and also to increase the waste filling space.
This paper describes the study done to check the stability of the HW landfill on the sloping ground for (a) without berm; (b) with earthen toe berm; and (c) engineered berm or mechanically stabilised earth (MSE) wall for the following critical influencing parameters: (a) leachate head due to temporary clogging; (b) pore water pressures in wet waste; (c) seismic forces. Limit equilibrium methods of analysis is adopted to check the stability for all the cases. Along with the stability, waste filling capacity for each configurations are evaluated. Eventually it is observed that on a sloping ground, the waste filling capacity is highest in case of landfill with MSE walls with optimal solution for stability with significant difference in waste filling capacity from the landfill without berm and earthen berm.
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Mahanta, A., Datta, M., Ramana, G.V. (2019). Capacity Enhancement of Landfills on Sloping Ground Using Engineered Berms at the Toe. In: Zhan, L., Chen, Y., Bouazza, A. (eds) Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3. ICEG 2018. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-2227-3_59
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DOI: https://doi.org/10.1007/978-981-13-2227-3_59
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