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master's thesis
Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi
diplomski rad
Zagreb: University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, 2013. urn:nbn:hr:169:987586
Miličević, Lidija
University of Zagreb
Faculty of Mining, Geology and Petroleum Engineering
Department of Geology and Geological Engineering

Institutional repository: Faculty of Mining, Geology and Petroleum Engineering Repository, University of Zagreb

Cite this document

Miličević, L. (2013). Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad (Master's thesis). Zagreb: University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:169:987586

Miličević, Lidija. "Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad." Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, 2013. https://urn.nsk.hr/urn:nbn:hr:169:987586

Miličević, Lidija. "Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad." Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, 2013. https://urn.nsk.hr/urn:nbn:hr:169:987586

Miličević, L. (2013). 'Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad', Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:169:987586

Miličević L. Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering; 2013 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:169:987586

L. Miličević, "Konstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad", Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:169:987586

Metadata
TitleKonstrukcija zdenaca s reduciranom dužinom sita na crpilištu Vinogradi : diplomski rad
Title (english)Construction of wells with reduced well screen length on the wellfield Vinogradi : master's thesis
AuthorLidija Miličević
MentorŽeljko Duić (mentor)
Committee memberŽeljko Duić
Committee memberJelena Parlov
Committee memberKristijan Posavec
GranterUniversity of Zagreb
Faculty of Mining, Geology and Petroleum Engineering
(Department of Geology and Geological Engineering)
Zagreb
Defense date and country2013-02-28, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mining, Petroleum and Geology Engineering
Geological Engineering
Abstract
Crpilište Vinogradi u Osijeku najveće je crpilište u Hrvatskoj gdje je voda zahvaćena iz pješčanih vodonosnika. Za podzemne vode crpilišta Vinogradi karakteristična je umjereno reduktivna sredina posljedica čega je povišen sadržaj otopljenog željeza u vodi, što pogoduje razvoju željezovitih bakterija koje stvaraju veliku količinu materijala koji se vrlo brzo širi, zatvarajući otvore na situ, u šljunčanom zasipu i pornom prostoru sloja u neposrednoj okolini zdenca reducirajući pritom specifičnu izdašnost zdenaca. Na zdencima crpilišta Vinogradi gotovo dvadeset godina analiziraju se svi čimbenici i testiraju različiti načini uklanjanja materijala istaloženog djelovanjem željezovitih bakterija. Kao jedan od razmatranih čimbenika je i dužina sita. U ovom radu, vodeći se literaturnim podacima te saznanjima o iskustvima s ranije izvedenim zdencima željelo se prikazati kako na vijek trajanja zdenaca i njegovu učinkovitost može utjecati ugradnja reduciranih ukupnih dužina sita prema kriteriju graničnih ulaznih brzina.
Abstract (english)
Abstract: The well-field Vinogradi in Osijek is the largest well-field in Croatia, where the water is extracted from the sandstone aquifer. A characteristic of the groundwater of well-field Vinogradi is an anoxic environment, which results in an increased level of dissolved iron in water. These conditions are suitable for a rapid growth of iron bacteria which are responsible for the production of a large quantity of very pervasive material that closes the perforations of a screen and gravel pack in the immediate vicinity of the well, causing the reduction of the well capacity. For almost twenty years, various factors have been analysed at the well-field Vinogradi and many different ways of removing the sedimented material have been tested. One of the factors discussed is also the length of the screen. Using the data from previous works and knowledge about earlier experience in well-making, this thesis is supposed to show that the duration and efficiency of wells can be affected by the installation of reduced screen lengths according to the entrance velocity criterion.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:169:987586
Study programmeTitle: Geological Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2016-01-19 10:41:14