Estimating shaking and bulking ground velocities at Oyu Tolgoi mine

Authors: Bayar, E; Batbayar, B; Mardiansyah, F; Bayartegsh, Z; Birch, DJ

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DOI https://doi.org/10.36487/ACG_repo/2645_96

Cite As:
Bayar, E, Batbayar, B, Mardiansyah, F, Bayartegsh, Z & Birch, DJ 2026, 'Estimating shaking and bulking ground velocities at Oyu Tolgoi mine', in A van As, D Cumming-Potvin & J Wesseloo (eds), Caving 2026: Proceedings of the Sixth International Conference on Block and Sublevel Caving, Australian Centre for Geomechanics, Perth, pp. 1-15, https://doi.org/10.36487/ACG_repo/2645_96

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Abstract:
Routine management of the seismic hazard at Oyu Tolgoi mine includes moment tensor analyses, which help to classify genuine seismic events into 2 main types: shear and crush. These correspond to 2 types of rock burst damage mechanisms – seismic shakedown and strain bursting – for which dynamic loading is quantified in terms of peak ground velocity (PGV) and strainburst velocity (VSB), respectively. Using readily available information and software, we demonstrate appropriate methods for estimating PGV and VSB from actual significant seismic events at Oyu Tolgoi mine. The results are compared with geotechnical observations, and an integration of these methods into the seismic hazard management plan is proposed.

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