A case study: development of a conceptual ground movement model for the Loy Yang mine with consideration to rehabilitation and closure

doi:10.36487/ACG_repo/2215_32

Authors: Narendranathan, S; Stipcevich, J; Symonds, A; Faithful, J

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DOI https://doi.org/10.36487/ACG_repo/2215_32

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Narendranathan, S, Stipcevich, J, Symonds, A & Faithful, J 2022, 'A case study: development of a conceptual ground movement model for the Loy Yang mine with consideration to rehabilitation and closure', in AB Fourie, M Tibbett & G Boggs (eds), Mine Closure 2022: Proceedings of the 15th International Conference on Mine Closure, Australian Centre for Geomechanics, Perth, pp. 463-478, https://doi.org/10.36487/ACG_repo/2215_32

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Abstract:
In this paper, the authors present a conceptual, semi-quantitative ground movement behaviour model developed for the Loy Yang mine, with consideration of the dominant ground movement mechanisms, the current regulatory mining environment in Victoria and nearby sensitive receptors. Mining-induced ground deformation associated with open cut brown coal operations at the AGL Pty Ltd Loy Yang mine, Victoria, Australia, is continuously monitored and evaluated. Ground movement behaviour associated with mining development is known with a reasonable degree of accuracy. However, understanding the ground movement response during rehabilitation and closure through to post-closure and the effects of ground movement of nearby receptors is challenging to quantify and typically requires a calibrated numerical model informed by extensive laboratory testing.

Keywords: ground movement behaviour, rehabilitation and closure, post-closure, large open cut coal mine

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