Evaluation of quick clay failures and the impact of climate change on slope stability

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dc.contributor.authorFarmanesh, Kiana
dc.contributor.authorGummesson, Emma
dc.contributor.authorRyberg, William
dc.contributor.authorSandberg, Arvid
dc.contributor.departmentChalmers tekniska högskola / Institutionen för arkitektur och samhällsbyggnadsteknik (ACE)sv
dc.contributor.departmentChalmers University of Technology / Department of Architecture and Civil Engineering (ACE)en
dc.contributor.examinerAbed, Ayman
dc.date.accessioned2024-06-25T10:03:16Z
dc.date.available2024-06-25T10:03:16Z
dc.date.issued2024
dc.date.submitted
dc.description.abstractThis bachelor’s thesis investigates the phenomenon of quick clay failure, focusing on the triggering factors behind landslides in Western Sweden and Norway. The aim was to map a pattern in historical events and with retained knowledge about quick clay and scenarios in climate change estimate future slope stability. To understand the triggering factors an investigation was conducted ranging from the structure of bedrock to the chemistry of clay particles. Water is one of the main factors that contribute to the formation of quick clay landslides and the characteristics of specific clay types. New precipitation patterns risk increased infiltration and flow in the soil which raises the importance of efficient risk mitigation strategies against slope failures. Alterations in hydrology were investigated, and how they affect parameters defining the strength and capacity to resist movements in the slope. Climate scenarios were used to forecast the influence of climate change on the global water cycle and consequently, its impact on future landslide occurrences. Historical factors of four landslides were compiled and analyzed. Multiple simulations of the Tuve landslide were conducted in Geostudio with analysis in Seep/W and Slope/w for three different sections. The understanding of quick clay properties, coupled with simulation results, led to the conclusion that the catastrophic landslide in Tuve in 1977 was a translational progressive landslide originating from Tuve kyrkväg. The extensive scale of the landslide was due to the initial slide disrupting the clay, transforming it into a liquefied state, thereby reducing the shear strength to zero causing the rest of the area to collapse. The behavior of quick clay is unpredictable and difficult to estimate the extent of a slide due to the possibility of a serial failure post an initial perturbation. The discussion highlights the importance of mitigating strategies and early indicators of potential hazards.
dc.identifier.coursecodeACEX11
dc.identifier.urihttp://hdl.handle.net/20.500.12380/308027
dc.language.isoeng
dc.setspec.uppsokTechnology
dc.subjectTuve
dc.subjectLandslide
dc.subjectQuick clay
dc.subjectSaftey factor
dc.subjectSlope failure
dc.titleEvaluation of quick clay failures and the impact of climate change on slope stability
dc.type.degreeExamensarbete på kandidatnivåsv
dc.type.degreeBachelor Thesisen
dc.type.uppsokM2
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