Abstract
GIS Modeling of weighted quick-clay preconditions has previously resulted in clay-sensitivity predictions in SW Sweden (mainly the Västra Götaland county), but variability with depth has not been studied in connection with modeling in the area. Certain characteristics important for quick-clay distribution and related risk assessment change with stratigraphy and depth. These need to be modeled in 3D to better account for varying clay conditions. The possibilities for such work have improved with methodological advances and increased accessibility of geotechnical records. A three-step process is used to evaluate the distribution of sensitive clay within the region. First, geotechnical records are compiled and used to analyze clay sensitivity relative to their vertical distance from stratigraphically distinguishable units. Second, the results are combined with parts of an earlier quick-clay prediction model. Third, the combined results are tested against existing information and presented as 3D sensitivity. Suggestions for further refinements and applicability of findings are given based on the results.
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Acknowledgements
The author is grateful to authorities who made data available and to Rodney Stevens at the Dept. of Earth Sciences, Univ. of Gothenburg who improved the manuscript language and contents. Hjördis Löfroth at the Swedish Geotechnical Institute is appreciated for reviewing the manuscript and suggesting improvements.
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Persson, M.A. (2014). Three-Dimensional Quick-Clay Modeling of the Gothenburg Region, Sweden. In: L'Heureux, JS., Locat, A., Leroueil, S., Demers, D., Locat, J. (eds) Landslides in Sensitive Clays. Advances in Natural and Technological Hazards Research, vol 36. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7079-9_4
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