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    Bolashak mine shaft digital twin: predictive maintenance insights for engineers

    July 3, 2026|

    Reviewed by Joe Ashwell

    Bolashak mine shaft digital twin: predictive maintenance insights for engineers

    First reported on International Mining – News

    30 Second Briefing

    TNC Kazchrome JSC, part of Eurasian Resources Group, has completed in-house high-precision laser scanning of a 1 km skip shaft at more than 600 m depth at the Bolashak mine, Donskoy GOK, to build a full digital twin. The survey captures detailed shaft geometry and equipment condition, enabling predictive maintenance on guides, buntons and conveyance clearances rather than relying on periodic manual inspections. For geotechnical and shaft engineers, the model supports early detection of deformation, misalignment and wear, and allows scenario testing before physical interventions.

    Technical Brief

    • In-house capability allows repeat scans at short intervals, tightening control on shaft condition trends.
    • Digital twin integrates shaft furnishings and hoisting equipment, enabling clearance checks under different loading scenarios.
    • 3D model supports clash detection before installing new buntons, guides or services in the shaft.
    • Remote condition assessment reduces exposure hours for shaft inspectors working at depth and in conveyance compartments.
    • Data-rich geometry enables more targeted non-destructive testing campaigns on suspect zones rather than blanket inspections.
    • Predictive maintenance scheduling can be aligned with hoisting windows, limiting unplanned stoppages that compromise egress capacity.
    • Similar deep shaft operations could use comparable twins to validate emergency response routes and refuge access geometrically.

    Our Take

    In our database of AI‑tagged Mining pieces, ERG is one of the few operators applying advanced digital tools both to deep underground infrastructure (Bolashak shaft >600 m) and to surface drilling trials at Vostochno‑Ayatskoye bauxite, indicating a strategy to standardise predictive maintenance and optimisation across very different geotechnical settings.

    The focus on a >600 m skip shaft at Bolashak fits with ERG’s broader commitment of over US$1 billion to Kazakhstan mining and metallurgical assets, implying that extending life and reliability of existing deep infrastructure is being treated as a capital‑efficient complement to new build projects like the planned HBI and pellet plants.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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