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Back-analysis of PC1 cave propagation and subsidence behaviour at the Cadia East mine
conference contribution
posted on 2018-10-15, 00:00 authored by Bre-Anne SainsburyBre-Anne Sainsbury, David Sainsbury, Carroll DianaBased on the successful initiation and breakthrough to surface of the PC1 cave at Cadia East, a
back-analysis of the performance was conducted to confirm design parameters to optimise the future draw
strategy. A mine-scale numerical model was developed to calibrate the existing caving and subsidence
behaviour associated with the initiation of PC1 and development of the crater. The successful calibration
of historical conditions has provided significant confidence in the caving and subsidence predictions
associated with future draw strategies. It has also validated a methodology to simulate the effects of
preconditioning in large-scale models
back-analysis of the performance was conducted to confirm design parameters to optimise the future draw
strategy. A mine-scale numerical model was developed to calibrate the existing caving and subsidence
behaviour associated with the initiation of PC1 and development of the crater. The successful calibration
of historical conditions has provided significant confidence in the caving and subsidence predictions
associated with future draw strategies. It has also validated a methodology to simulate the effects of
preconditioning in large-scale models
