A case study: consolidation properties of Hazelwood Power Station ash

Authors: Narendranathan, S; Anders, J; Faithful, J; Patel, N Download Paper Open access courtesy of:

DOI https://doi.org/10.36487/ACG_rep/1915_87_Narendranathan

Cite As:
Narendranathan, S, Anders, J, Faithful, J & Patel, N 2019, 'A case study: consolidation properties of Hazelwood Power Station ash', in AB Fourie & M Tibbett (eds), Mine Closure 2019: Proceedings of the 13th International Conference on Mine Closure, Australian Centre for Geomechanics, Perth, pp. 1087-1100, https://doi.org/10.36487/ACG_rep/1915_87_Narendranathan



Abstract:
This paper presents the challenges involved in interpreting representative primary and secondary compression ratios within ash ponds at the Hazelwood brown coal mine, located in the Latrobe Valley region of Victoria. Rehabilitation of such ash ponds must include a suitably designed and robust capping liner. Unforeseen and excessive settlement can result in damage to the capping liner, diminishing its serviceability and impairing its longevity. This paper explores the process involved in the interpretation of compression ratios within ash, with a focus on the process utilised to refine the initial consolidation parameters with the observations from trial embankments. It is envisaged that by sharing this information with the wider mining fraternity that it will provide a useful precedent for industry practitioners involved in the assessment of brown coal ash.

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