GEOLOGICAL STUDIES OF THE SISDOLE-BANCHARE DANDA LANDFILL SITES OF THE NUWAKOT DISTRICT, CENTRAL NEPAL

Kabi Raj Paudyal () and Birat Shrestha
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Kabi Raj Paudyal: Central Department of Geology, Tribhuvan University, Kathmandu, Nepal.
Birat Shrestha: Central Department of Geology, Tribhuvan University, Kathmandu, Nepal.

Pakistan Journal of Geology (PJG), 2023, vol. 7, issue 1, 40-47

Abstract: This manuscript investigates the unexplored slope stability of the Sisdole landfill site, emphasizing the critical need for comprehensive assessments during construction and operation to mitigate potential damages to people, property, and the environment. Focusing on the geological characteristics of the Banchare Danda and Sisdole landfill area, which comprises deformed metasandstone and pegmatite dykes, the study reveals the presence of two anticlines, with the proposed Banchare Danda landfill site strategically positioned. Laboratory analyses of waste/soil samples collected from Sisdole determined cohesion, angle of internal friction, and unit weight. Three slope profiles underwent numerical modeling using the Morgenstern-Price method, including constant and probabilistic analyses, revealing a factor of safety below the prescribed threshold. Seismic and dynamic analyses indicate hazardous conditions for slopes exposed to peak ground accelerations exceeding 250 gals, underscoring the urgency for enhanced design considerations and risk mitigation strategies in landfill operations.

Keywords: landfill site; geological studies; stability analysis; numerical modeling; a factor of safety; peak ground acceleration (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbnpjg:v:7:y:2023:i:1:p:40-47

DOI: 10.26480/pjg.01.2023.40.47

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