Abstract
Landslides in Eastern Canadian sensitive clay deposits are generally located along river or stream valleys. The stratigraphy of these deposits can be simplified as an impervious clay deposit between two pervious boundaries, a weathered fissured crust at the top and a coarse till layer at the bottom. The paper examines the evolution of the ground water regime as the valleys are formed by erosion and discusses the impact of the valleys formation on the requirements for slope stability analysis and determination of shear strength. A large data bank of laboratory test results are then presented and treated to arrive at a determination of the shear strength parameters based only on the preconsolidation pressure.
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Acknowledgments
The material presented in this paper resulted from the work of many graduated students in the soil mechanics laboratory at the University of Sherbrooke in the province of Québec, Canada. Working with these graduated students has been the highlight of the author career at the university. The author is grateful in the preparation of this paper for the support of the «Ministère des Transports, de la Mobilité durable et de l’Électrification des transports» of the province of Québec, namely Denis Robitaille, Denis Demers and Mélissa Raymond, and also of Ariane Locat at the University Laval.
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Lefebvre, G. (2017). Sensitive Clays of Eastern Canada: From Geology to Slope Stability. In: Thakur, V., L'Heureux, JS., Locat, A. (eds) Landslides in Sensitive Clays. Advances in Natural and Technological Hazards Research, vol 46. Springer, Cham. https://doi.org/10.1007/978-3-319-56487-6_2
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DOI: https://doi.org/10.1007/978-3-319-56487-6_2
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