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Title:Modeliranje prenosa sedimenta v akumulacijskem jezeru Melje : diplomsko delo
Authors:ID Kranjc, Primož (Author)
ID Ravnik, Jure (Mentor) More about this mentor... New window
ID Ojsteršek Zorčič, Polonca (Comentor)
Files:.pdf VS_Kranjc_Primoz_2024.pdf (6,79 MB)
MD5: 9A75AED793DED214D57BF459F476E501
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Nestanovitnost dežja pojasnjuje neenakomerno porazdelitev količine vodnih virov skozi vse leto. Z gradnjo jezov in akumulacijskih jezer želimo izravnati to ne enakomerno porazdelitev vodnih virov in s tem povečati zagotovljenost vode. Akumulacijska jezera se najpogosteje izkoriščajo kot skladišča pitne vode ali shrambo hidroelektrične energije. Takšen jez ne predstavlja ovire le vodi v reki ampak tudi sedimentu, ki ga reka prenaša dol vodno. Sediment se začne kopičiti v rezervoarju in s časom zniža kapaciteto shranjene vode v rezervoarju in s tem škodi glavni vlogi rezervoarja; shranjevanju vode. Sedimentacija je glavni problem vzdrževanja akumulacijskih jezer saj ga je treba redno odstranjevati. Odstranjevanje sedimenta iz akumulacijskega jezera ni enostavno, razmisliti moramo o tem kje ga bomo odstranili, v kolikšni količini (vsega ali le delno) in v kakšnih časovnih razmakih je odstranjevanje najbolj ekonomično. Diplomska naloga se navezuje na sedimentacijo v akumulacijskem jezeru Melje. Z izdelavo hidravličnega modela v programski opremi HEC-RAS ugotavljamo vpliv usedlin na tok v reki Dravi in oblikujemo smernice za odstranjevanja sedimenta v rezervoarju. Simulacije so pokazale, da se na tem območji najbolj splača prečrpavanje sedimenta v kanal. Potrebno bo dodatna študija za potrditev sklepa.
Keywords:prenos sedimenta, HEC-RAS, oblikovanje podatkov, 2D modeliranje toka, vzdrževanje akumulacijskega jezera
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[P. Kranjc]
Year of publishing:2024
Number of pages:1 spletni vir (1 datoteka PDF (XII, 55 f.))
PID:20.500.12556/DKUM-90554 New window
UDC:627.8.034.7(043.2)
COBISS.SI-ID:233072899 New window
Publication date in DKUM:11.04.2025
Views:131
Downloads:42
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:09.09.2024

Secondary language

Language:English
Title:Modelling of sediment transport in reservoir melje
Abstract:The fickleness of rain explains the unequal distribution of water resources throughout the year. By building dams and reservoirs we wish to even out the unequal distribution of water resources and increase water security. Reservoirs are most commonly used as freshwater storage areas for drinking water or hydroelectric energy storage. A dam does not only present an obstacle to the water flow of the river but also to the sediment the river is transporting downstream. Sediment slowly accumulates in the reservoir and over time can significantly lower the storage capacity of the reservoir which hurts the main purpose of a reservoir, water storage. Sedimentation is the main problem in reservoir maintenance because it must be removed regularly. Removing sediment from a reservoir is not simple, we have to think about the specific location where we want to remove the sediment, how much we want to remove (all of it or just partially) and what time interval of removal is the most economical. This thesis relates to sedimentation in the reservoir Melje. With the creation of the hydraulic model in HEC-RAS we interpret the influence of accumulated sediment on the rivers flow and create guidelines for reservoir sediment management. The simulations showed that the best solution in this area is to pump the sediment into the channel feeding the hydroelectric power plant. A second study is recommended to confirm these findings and prove its viability.
Keywords:sediment transport, HEC-RAS, data management, 2D flow modeling, reservoir maintenance


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