Abstract
Physical modelling of landslides using scaled landslide models behavior began in 1970s in Japan at a scaled natural slope physical model. In October 2018, at the Faculty of Civil Engineering University of Rijeka, started a four-year research Project Physical modelling of landslide remediation constructions behavior under static and seismic actions, funded by the Croatian Science Foundation. The main Project’s aim is the modelling of landslide remedial constructions’ behavior in physical models of scaled landslides in static (rainfall triggered landslides) and seismic conditions (earthquake triggered landslides) and their combination under 1 g conditions. In this manuscript we presents the preliminary results obtained in landslide initiation test of a sandy slope, constructed of 0–1.0 mm the Drava River sand and exposed to an artificial rain typical for local conditions in Croatia by rainfall simulator. The results of landslide development were monitored by observation of volumetric water content and pore water pressure as well as by of surface displacement by structure from motion (SfM) surface observation displacement monitoring inside the model displaced mass. In this paper the preliminary results of provided test will be presented related to initiation and development of the observed instability of the sandy slope model and compared with the results of numerical analysis of rainfall infiltration combined with limit equilibrium stability analysis.
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Acknowledgements
The research presented in this paper was supported by Croatian Science Foundation under the Project IP-2018-01-1503 Physical modelling of landslide remediation constructions behaviour under static and seismic actions (ModLandRemSS), and University of Rijeka under the Project Uniri-Tehnic-18-113 Laboratory research of static and cyclic behaviour at landslide activation. These supports are gratefully acknowledged. The part of laboratory equipment used for laboratory testing was provided in the frame of Project Research Infrastructure for Campus based Laboratories at the University of Rijeka, co-funded in a part by the Ministry of Science, Education and Sports of the Republic of Croatia and the European Fund for Regional Development (ERDF). The authors also want to thank to all Projects’ members and their help in test conducting.
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Jagodnik, V., Peranić, J., Arbanas, Ž. (2021). Mechanism of Landslide Initiation in Small-Scale Sandy Slope Triggered by an Artificial Rain. In: Arbanas, Ž., Bobrowsky, P.T., Konagai, K., Sassa, K., Takara, K. (eds) Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction. Springer, Cham. https://doi.org/10.1007/978-3-030-60713-5_19
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