Analysis of a large rock slope failure on the east wall of the LAB Chrysotile Mine in Canada: back analysis, Impact of water infilling and mining activity

Authors: Grenon, MartinCaudal, PhilippeAmoushahi, SinaTurmel, DominiqueLocat, Jacques
Abstract: A major mining slope failure occurred in July 2012 on the East wall of the LAB Chrysotile mine in Canada. The major consequence of this failure was the loss of the local highway (Road 112), the main commercial link between the region and the Northeast USA. LiDAR scanning and subsequent analyses were performed and enabled quantifying the geometry and kinematics of the failure area. Using this information, this paper presents the back analysis of the July 2012 failure. The analyses are performed using deterministic and probabilistic limit equilibrium analysis and finite-element shear strength reduction analysis modelling. The impact of pit water infilling on the slope stability is investigated. The impact of the mining activity in 2011 in the lower part of the slope is also investigated through a parametric analysis.
Document Type: Article de recherche
Issue Date: 24 October 2016
Open Access Date: 14 May 2018
Document version: AM
This document was published in: Rock Mechanics and Rock Engineering, Vol. 50 (2), 403–418 (2017)
Alternative version: 10.1007/s00603-016-1116-8
Collection:Articles publiés dans des revues avec comité de lecture

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