Goulet, A & Grenon, M 2024, 'Linking the orientation of seismic response clusters following development blasting, the stress regime and large-scale structures', in P Andrieux & D Cumming-Potvin (eds), Deep Mining 2024: Proceedings of the 10th International Conference on Deep and High Stress Mining, Australian Centre for Geomechanics, Perth, pp. 947-962, https://doi.org/10.36487/ACG_repo/2465_60
(https://papers.acg.uwa.edu.au/p/2465_60_Grenon/)
Abstract: As mines get deeper, seismic responses to drift development blasts become critical and can result in major operational constraints. Therefore, understanding seismic hazards associated with development blasting is crucial. This paper investigated 228 seismic response clusters following development blasting for a deep sector of LaRonde mine (Angico Eagle Ltd) in Canada. The orientation of seismic response clusters was investigated. A plane-fitting algorithm using principal component analysis (PCA) was used to define the seismic response clusters’ orientation. The analysis showed that the alignment of the seismic response clusters is not random. Most clusters are sub-horizontal and in the direction of the principal stresses (σ1 and σ2). The orientation and seismic moment of clusters were then linked to the stress regime and large-scale structures to identify possible failure mechanisms. 

Keywords: seismic response clusters, deep mining, blasting, stress, structures