Naslov
Numerical modelling of cover-collapse sinkholes caused by the earthquake – a case study

Autori
Barić, Anja ; Kovačević Zelić, Biljana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
9th International Congress on Environmental Geotechnics: Addressing Global Challenges / Baser, Tungce ; Farid, Arvin ; Fei, Xunchang ; Zekkos, Dimitrios - Athens : ARGO-E GROUP, 2023, 378-385

ISBN
978-618-86739-4-6

Skup
9th International Congress on Environmental Geotechnics: Addressing Global Challenges

Mjesto i datum
Khania, Grčka, 25.06.2023. - 28.06.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
karst, cover-collapse sinkhole, earthquake, numerical modelling, failure

Sažetak
After a MW 6.4 earthquake occurred on December 29, 2020 in Petrinja, Croatia, over 100 cover collapse sinkholes appeared in a small 1 km2 area in a period of several months after the event. In the beginning of 2021, a geotechnical reconnaissance and a limited geotechnical subsurface investigation was performed. The existing geological and hydrogeological data were analysed, and the geometry of sinkholes was recorded. Two geotechnical boreholes, in-situ geotechnical characterization and standard penetration tests were performed close to the biggest sinkhole, followed by a laboratory testing of physical, index and design properties. All the collected data showed that there was a specific geological setting on this microsite. A typical soil profile for the biggest recorded sinkhole was developed and used for the numerical analyses to examine the possible failure mechanisms and to perform the parametric analyses for determining the effects of depth and geometry of the existing underground caves and soil properties on the cover-collapse sinkhole formation.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo

POVEZANOST RADA