20.500.12556/RUL-174037 Hidrološke analize in modeliranje vpliva suhih zadrževalnikov na poplavne razmere na porečju Drete magistrsko delo Hydrological analysis and modelling of the impact off flood retention reservoirs on flooding in the Dreta river catchment master thesis V magistrski nalogi je obravnavana poplavna ogroženost porečja reke Drete, hudourniškega pritoka Savinje. Zaradi kratkega časa koncentracije in intenzivnih padavinskih dogodkov se v Zadrečki dolini pogosto pojavljajo poplave, ki ogrožajo naselja in infrastrukturo. V okviru državnega prostorskega načrta so predvideni suhi zadrževalniki kot ključni gradbeni ukrep za zmanjševanje poplavnih konic. Namen naloge je bil z hidrološkim in hidravličnim modeliranjem preveriti njihovo učinkovitost. Za ta namen sta bila izdelana hidrološki model v programu HEC-HMS in hidravlični model v programu HEC-RAS. Hidrološki model je bil kalibriran in validiran z izbranimi visokovodnimi dogodki ter uporabljen za generiranje projektnih pretokov s 100-letno povratno dobo, ob upoštevanju podnebnih sprememb. Hidravlični model pa je omogočil prostorsko analizo poplavnih obsegov in globin na območju naselja Gornji Grad. Rezultati kažejo, da suhi zadrževalniki lahko bistveno zmanjšajo poplavne konice. Največji pretok Drete v Gornjem Gradu se je zmanjšal s 184 m³/s na 124 m³/s, poplavljena površina pa se je zmanjšala za približno 55 %. Analiza je obenem pokazala, da sta, v osnutku DPN dva predvidena zadrževalnika neprimerno umeščena, saj ne prispevata k zmanjšanju pretokov. Zaključki potrjujejo, da ustrezno umeščeni in dimenzionirani suhi zadrževalniki predstavljajo učinkovit ukrep za zmanjšanje poplavne nevarnosti. Rezultati so pomembna podlaga za prostorsko načrtovanje, pripravo državnega prostorskega načrta ter razvoj ukrepov prilagajanja podnebnim spremembam. This master’s thesis addresses the flood hazard in the Dreta River basin, a torrential tributary of the Savinja River. Due to its short concentration time and high-intensity rainfall events, floods frequently occur in the Zadrečka Valley, threatening settlements and infrastructure. Within the framework of the national spatial plan, dry detention reservoirs are proposed as a key structural measure to reduce flood peaks. The aim of the thesis was to assess their effectiveness through hydrological and hydraulic modeling. For this purpose, a hydrological model was developed using HEC-HMS and a hydraulic model using HEC-RAS. The hydrological model was calibrated and validated with selected flood events and applied to generate design flows with a 100-year return period, considering climate change impacts. The hydraulic model enabled spatial analyses of flood extent and water depths in the town of Gornji Grad. The results show that dry detention reservoirs can significantly reduce flood peaks. The maximum discharge of the Dreta River in Gornji Grad decreased from 184 m³/s to 124 m³/s, while the flooded area was reduced by approximately 55%. The analysis also revealed that, according to the draft national spatial plan, two of the proposed reservoirs are inappropriately located, as they do not contribute to peak flow reduction. The conclusions confirm that properly sited and dimensioned dry detention reservoirs represent an effective measure to mitigate flood risk. The results provide an important basis for spatial planning, the preparation of the national spatial plan, and the development of adaptation measures to climate change. magistrska dela poplavna ogroženost suhi zadrževalniki hidrološko modeliranje hidravlično modeliranje HEC-HMS HEC-RAS podnebne spremembe reka Dreta master thesis flood hazard flood retention reservoirs hydrological modeling hydraulic modeling climate change Dreta River true false false [L. Majko] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-09-26 08:45:17 2025-09-26 08:45:21 2025-11-17 03:48:08 0000-00-00 00:00:00 2025 0 Ljubljana 2025 Ljubljana 1 spletni vir (1 datoteka PDF (XII, 104 str., [10] str. pril.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 556.152:504.4:627.53(043.2) 175169 251446531 19478.pdf 19478.pdf 1 1F9EB02B42845058D932BA48157991E6 40a8db7e483138cb1f219d9ac6ff96ad4279c9b54af5d831918e3bd19b3b8ed5 2f4843fb-9aa4-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218775 Fakulteta za gradbeništvo in geodezijo 0 0 0