Naslov
Erosion of the Sava riverbed in Croatia and its foreseeable consequences

Autori
Gilja, Gordon ; Oskoruš, Dijana ; Kuspilić, Neven

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

Izvornik
BALWOIS: Conference on Water observation and information system for decision support / Morell, Marc ; Popovska, Cvetanka ; Morell, Olivija ; Stojov, Vasko - Skopje : Faculty of Civil Engineering (Sts Cyril and Methodius University - Skopje), 2010

ISBN
978-608-4510-03-1

Skup
BALWOIS 2010: Conference on Water observation and information system for decision support

Mjesto i datum
Ohrid, Sjeverna Makedonija, 25.05.2010. - 29.05.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Bottom erosion ; load transport ; level of underground water ; stability of hydro technical structures

Sažetak
Riverbed erosion and bottom deepening are part of natural fluvial processes in the upper stream. The increasing gradient of these changes is interconnected with the level of human influence in the river basin and riverbed as well. In time the consequences of riverbed erosion will become serious as well as dangerous, i.e. they may have an impact on the lowering of the underground water levels in the river basin or threaten the stability of hydro technical structures. This process in not usually visible to the naked eye, it is lengthy and slow, but can be easily detected by analysis of specific types of measurements. The article will show the section of the Sava River from the Croatian-Slovenian border down to the rkm 670+000, where the Drenje hydropower plant is planned. Regular measurements of water levels, discharge, amount of load transport and cross section profiles along this section of the Sava River prove that significant changes in the riverbed have occurred in the last 20 years. Because of the deepening of the riverbed, at some locations by more than 3.5 m, the stability of bridges in Zagreb and the surrounding area are especially at risk. As a result of unpredictable bottom erosion, the railway bridge Sava Jakuševac was damaged on March 30, 2009. This incident showed that erosion may lead to the wearing away of bridge foundations which in turn is very likely to lead to serious damage to other bridges.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA