Armstrong, J & Quiala, J 2026, 'From rheology to reality: how intelligent software is transforming backfill design and execution', in AB Fourie, M Horta, M Oliveira & S Wilson (eds), Paste 2026: Proceedings of the 28th International Conference on Paste, Thickened and Filtered Tailings, Australian Centre for Geomechanics, Perth, pp. 1-11, https://doi.org/10.36487/ACG_repo/2655_57
(https://papers.acg.uwa.edu.au/p/2655_57_Armstrong/)
Abstract: Wilson (2022) described the need to customise backfill specifications for each stope, challenging the longstanding practice of adopting a ‘one-size-fits-all’ approach. A persistent issue in backfill operations has been the limitations of traditional hydraulic modelling, combined with insufficient understanding of the relationships between strength, time, and rheology. Addressing these challenges, the development of Backfill Pro by MineSmart Solutions provides a transformative tool for engineers and operators, allowing precise tailoring of backfill properties for specific stopes.
By leveraging laboratory and operational QA/QC data, the software determines the rheological properties necessary for reliable pipeline transport and calculates binder requirements to achieve target strength within a defined timeframe. This ensures accuracy in binder dosing, reducing both underdosing and overdosing – a common cost and performance challenge.
This paper builds upon the foundational theory outlined by Wilson (2022), presenting a case study from the Leeville underground gold mine in Nevada. The study demonstrates how Backfill Pro’s latest features were applied in practice, showing the software’s effectiveness as a data-driven and efficient solution for modern backfill operations.

Keywords: Backfill Pro, rheology, hydraulic modelling, stope fill, binder optimisation