Analize utjecaja oborina na stabilnost pokusa urušnih vrtača

master's thesis

• Title (english): Analyzes of the influence of precipitation on the slope stability of colapse sinkholes
• Author: Bernard Milošević
• Mentor: Mario Bačić (mentor)
• Committee member: Meho-Saša Kovačević (predsjednik povjerenstva)
• Committee member: Lovorka Librić (član povjerenstva)
• Committee member: Mario Bačić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; Zagreb
• Defense date and country: 2024-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Krš, kao reljefni oblik, se rasprostire na oko 20 % kontinentalne površine na Zemlji. Jedan od
najrasprostranjenijih geoloških prirodnih procesa u kršu koji, između ostalog, mogu
predstavljati i iznenadnu opasnost i rizik za ljude, okoliš i infrastrukturu, je pojava urušnih
vrtača. Kao globalna pojava uzrokuju velike financijske štete u različitim zemljama svijeta,
te je kao takva postala zanimljiva svjetskoj znanosti. Posljednjih desetljeća se zna jako puno
o načinu nastanka, o uzrocima pojavnosti, kao i njihovom mogućem širenju kroz modeliranje
raznim numeričkim i analitičkim modelima, te posljedično smanjenje rizika. Ovim
diplomskim radom dan je pregled mehanizama nastanka urušnih vrtača globalno, kao i
pregled geologije i hidrogeologije područja Mečenčani-Borojevići u Sisačko-moslavačkoj
županiji u kojoj se otvorilo preko 100 urušnih vrtača kao posljedica potresa koji je u prosincu,
2020. godine zadesio područje Sisačko-moslavačke županije. Pri tome se rad fokusira na
analizu stabilnosti pokosa najveće urušne vrtače te utjecaj oborina na stabilnost istih.
Razlog za navedeno je u činjenici da je u vremenu od otvaranja urušne vrtače do njezine
sanacije bilo više oborinskih događaja koji su uzrokovali dodatna klizanja pokosa i povećanje
dimenzija urušne vrtače.

Abstract (english)

Karst, as a landform, covers approximately 20 % of the Earth's continental surface. One of
the most widespread geological processes in karst regions, which can pose sudden hazards
and risks to people, the environment, and infrastructure, is the occurrence of sinkholes. As
a global phenomenon, sinkholes cause significant financial damage in various countries
around the world, making them a subject of interest in the global scientific community. In
recent decades, much has been learned about their formation, the causes of their
occurrence, as well as their potential expansion through modeling with various numerical
and analytical models, ultimately contributing to risk reduction. This thesis provides an
overview of the mechanisms behind sinkhole formation on a global scale, as well as a review
of the geology and hydrogeology of the Mečenčani-Borojevići area in the Sisak-Moslavina
County, where over 100 sinkholes appeared as a consequence of the earthquake that struck
the region in December 2020. The focus of the study is on the stability analysis of the
largest sinkhole's slope and the impact of precipitation on its stability. This focus is driven
by the fact that, during the period between the sinkhole's formation and its remediation,
multiple rainfall events occurred, causing further slope sliding and an increase in the
sinkhole's dimensions.

• Keywords: krš; urušne vrtače; geohazard; analize stabilnosti pokosa; utjecaj oborina
• Keywords (english): karst; collapse sinkholes; geohazard; analyze of slope stability; influence of precipitation
• Language: croatian
• URN:NBN: urn:nbn:hr:237:107774
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-07 10:13:07