Design and Construction of Rockfill Columns in Deep Clay Deposits for Riverbank Stabilization in St. Jean Baptiste, Manitoba

James R. Bartz, Rob Kenyon, Bruno Pierre Arpin, David Flynn, Alena James

In the proceedings of: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC

Session: Landslides and Geohazards III

ABSTRACT: The integrity of flood protection dikes for the town of St. Jean Baptiste in southern Manitoba were at risk due to slope failures along the Red River through Lake Agassiz clay deposits. Manitoba Infrastructure completed stabilization works to protect the dikes adjacent to over 100 m of riverbank with the construction of rockfill columns. This is a common landslide stabilization technique in the region, however the depth of the clay deposit and artesian groundwater conditions in the underlying aquifer provided unique design and constructability challenges. This paper presents the design including deformation predictions, construction details, and a review of the performance to date. L'intégrité des digues protectrices contre les inondations dans la ville de Saint-Jean-Baptiste, dans la région sud du Manitoba, était menacée par des talus défaillants le long de la rivière Rouge à cause des dépôts d'argile du lac Agassiz. Infrastructure Manitoba a terminé les travaux de stabilisation sur plus de 100 mètres de rive afin de protéger les digues adjacentes avec la construction de colonnes d'enrochement. Il s'agit d'une technique courante de stabilisation des glissements de terrain dans la région, mais la profondeur des dépôts d'argile et la condition des eaux souterraines artésiennes dans l'aquifère sous-jacent a posé des problèmes de conception et de constructibilité uniques. Cet article présente la conception, y compris les prédictions de déformation, les détails de construction, et une évaluation des résultats à ce jour.

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Cite this article:
James R. Bartz; Rob Kenyon; Bruno Pierre Arpin; David Flynn; Alena James (2018) Design and Construction of Rockfill Columns in Deep Clay Deposits for Riverbank Stabilization in St. Jean Baptiste, Manitoba in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.

@article{geo2018Paper486,author = James R. Bartz; Rob Kenyon; Bruno Pierre Arpin; David Flynn; Alena James,title = Design and Construction of Rockfill Columns in Deep Clay Deposits for Riverbank Stabilization in St. Jean Baptiste, Manitoba ,year = 2018}