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Bulletin of Engineering Geology and the Environment

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01-06-2022 | Original Paper

Probabilistic assessment of effects of heterogeneity on the stability of coal mine overburden dump slopes through discrete element framework

Authors: Madhumita Mohanty, Rajib Sarkar, Sarat Kumar Das

Published in: Bulletin of Engineering Geology and the Environment | Issue 6/2022

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Abstract

The proper assessment of stability of overburden (OB) dump slopes for the prevention of unforeseeable incidents has become a crucial issue for the coal mine industries across the globe. Coal mine OB is a highly heterogeneous material varying in shape, size and mineralogical composition. In the present study, Voronoi tessellation scheme is adopted for the simulation of OB dump materials through the programmable discrete element–based software, Universal Distinct Element Code (UDEC). A probabilistic investigation based on the concept of factorial design approach is carried out to consider the uncertainty of heterogeneous material parameters. A prediction model has been framed for the evaluation of factor of safety (FOS) of the coal mine OB dump slope taking into account, the aspect of its heterogeneity. The influence of various material parameters on the stability of the OB dump slope is also investigated. Finally, the probability of failure of the OB dump slope has been evaluated using Monte-Carlo technique.

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Title: Probabilistic assessment of effects of heterogeneity on the stability of coal mine overburden dump slopes through discrete element framework
Authors: Madhumita Mohanty
Rajib Sarkar
Sarat Kumar Das
Publication date: 01-06-2022
Publisher: Springer Berlin Heidelberg
Published in: Bulletin of Engineering Geology and the Environment / Issue 6/2022
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-022-02720-0

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