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Published in:
2019 | OriginalPaper | Chapter
Impact of the Use of 3D Modeling on Sand Boil Risk Management
Authors : M. Daniela Giliberti, Massimiliano Cirincione, Alessandro Cavagni
Published in: Internal Erosion in Earthdams, Dikes and Levees
Publisher: Springer International Publishing
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Abstract
The study will present a further salient advance of 3-D modelling and its application in the efficient design of hydraulic barriers intended to prevent sand boil formation. The approach to hydraulic analysis was carried out using FEMWATER (Lin et al. 1997) a 3-D Finite Element model while data have been processed by the graphical interface of the Groundwater Modelling System (GMS 2017 software). The area that arose our interest due to the reoccurrence in the past 70 years of several impressive sand boils, is located along a stretch of the Po river, Italy, between the villages of Boretto (RE) and Pieve Saliceto (RE). Recorded sand boils formed after flood events in 1951, 1994 and 2000 (reactivated in 2014), each one appearing downstream from the previous one and ever closer to a freeway fly-over, without though a significant change in distance from the levee toe. In order to mitigate sand boil risk formation one of the solutions to be studied was: build a new cut-off wall along the same stretch of river embankment.