ANALYSIS OF A BLAST LOADING NEAR SENSITIVE CLAY SLOPE IN LA ROMAINE VILLAGE, QUEBEC
Sarah Bouchard, Serge Leroueil, Denis LeBoeuf, Pierre-Luc Deschênes, Pierre Dorval
In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost ConferenceSession: Landslides and Slope Stability VI / Mouvements de terrain et stabilité des pentes VI
ABSTRACT: It is well known that blasting vibrations may be a triggering factor for soil movements and landslides. This paper describes a case history of a large slide caused by blasting in a sensitive clay deposit. The slide occurred on August 1st 2009 in La Romaine village, on the North Shore of the St-Lawrence Gulf. Two types of loading may have affected the slope stability: the blast vibrations themselves and the rapid loading impact stemming from muck-pile formation. The goal of this paper is to provide an analysis of the blast loading characteristics in order to better understand its influence on this slope failure. First, some concepts about blasting vibrations are introduced and landslide case histories involving blasting operations are reviewed. Then, data from La Romaine blast design are presented and the resulting ground motion parameters and the dynamic stresses and strains are assessed using theoretical and empirical equations.
RÉSUMÉ: Les vibrations de sautage peuvent être un élément déclencheur de glissement de terrain. Un grand glissement de terrain dans des argiles sensibles est survenu le 1er août 2009 au village de La Romaine au Québec Deux types de chargement sont survenus dans la pente et pourraient avoir affecté sa stabilité : les vibrations générées par le sautage projetés. Cet article traite du sautage et a pour objectif principal de caractériser la sollicitation dynamique survenue et de comprendre son influence sur la penbrève revue de littérature sur les vibrations de construction générées par les travaux, la vitesse en pointe des particules et des cas de glissements impliquant des sautages est présentée. La conception du sautage de La Romaine est ensuite détaillée et les vitesses en pointe des particules, ainsi que les contraintes et déformations associées au sautage sont calculée
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Sarah Bouchard; Serge Leroueil; Denis LeBoeuf; Pierre-Luc Deschênes; Pierre Dorval (2015) ANALYSIS OF A BLAST LOADING NEAR SENSITIVE CLAY SLOPE IN LA ROMAINE VILLAGE, QUEBEC in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.
@article{474,author = Sarah Bouchard; Serge Leroueil; Denis LeBoeuf; Pierre-Luc Deschênes; Pierre Dorval,title = ANALYSIS OF A BLAST LOADING NEAR SENSITIVE CLAY SLOPE IN LA ROMAINE VILLAGE, QUEBEC,year = 2015}