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Three-dimensional slope stability model of the Turaida castle mound

  • The state-of-the-art finite element software Plaxis 3D was applied in a real-world study site of the Turaida castle mound to investigate the slope stability of the mound and understand the mechanisms triggering landslides there. During the simulation, the stability of the castle mound was analysed and the most landslide-susceptible zones of hillslopes were determined. The 3D finite-element stability analysis has significant advantages over conventional 2D limit-equilibrium methods where locations of 2D stability sections are arbitrarily selected. Two modelling scenarios of the slope stability were elaborated considering deep-seated slides in bedrock and shallow landslides in the colluvial material of slopes. The model shows that shallow slides in colluvium are more probable. In the finite-element model, slope failure occurs along the weakest zone in colluvium, similarly to the situation observed in previous landslides in the study site. The physical basis of the model allows results to be obtained very close to natural conditions and delivers valuable insight in triggering mechanisms of landslides.

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Author:Karlis Kukemilks, Martinš Vilnitis
Parent Title (English):Estonian Journal of Earth Sciences
Publisher:Estonian Academy Publishers
Place of publication:Tallinn
Document Type:Article
Date of completion:2021/09/21
Date of publication:2021/09/21
Publishing institution:Universität Trier
Contributing corporation:The publication was funded by the Open Access Fund of Universität Trier and the German Research Foundation (DFG)
Release Date:2022/03/15
Tag:Gauja spillway valley; landslides; numerical models; slope stability modelling
GND Keyword:Burg Turaida; Modellierung; Rutschung
Volume (for the year ...):2021
Issue / no.:Band 70, Heft 4
Number of pages:11
First page:185
Last page:195
Institutes:Fachbereich 6 / Geographie und Geowissenschaften
Dewey Decimal Classification:9 Geschichte und Geografie / 91 Geografie, Reisen / 910 Geografie, Reisen
Licence (German):License LogoCC BY: Creative-Commons-Lizenz 4.0 International

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