Hidrogeološki odnosi crpilišta Novljanska Žrnovnica kod Novog Vinodolskog

master's thesis

• Title (english): Hydrogeological relations of the Novljanska Žrnovnica spring near Novi Vinodolski
• Author: Brigita Plander
• Mentor: Ranko Biondić (mentor)
• Committee member: Sanja Kovač (predsjednik povjerenstva)
• Committee member: Ranko Biondić (član povjerenstva)
• Committee member: Hrvoje Meaški (član povjerenstva)
• Committee member: Sanja Kapelj (član povjerenstva)
• Granter: University of Zagreb; Faculty of Geotechnical Engineering; Varaždin
• Defense date and country: 2022-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Interdisciplinary Technical Sciences; Environmental Engineering

Abstract

Crpilište Novljanska Žrnovnica se nalazi u uvali Žrnovnica u blizini grada Novog Vinodolskog te se koristi za vodoopskrbu okolnih gradova i naselja. Slivno područje izvorišnog sustava je izgrađeno od karbonatnih i klastičnih stijena i prisutni su svi elementi koji karakteriziraju geološku građu Dinarida.
Za vrijeme ljetnih mjeseci je vrlo dobro razvijen turizam te su potrebe za pitkom vodom veće u odnosu na ostatak godine. Stoga je sustav spojen sa vodoopskrbnim sustavom grada Rijeke zbog stabilnosti sustava te zbog mogućnosti opskrbe vodom u tim razdobljima. Prekomjernim crpljenjem podzemne vode se razina vode spušta u odnosu na prirodno stanje vodonosnika te se time mijenjaju ravnotežni uvjeti. Kao posljedica toga dolazi do pomicanja granice slane vode prema gornjim dijelovima vodonosnika u kojem su prethodno vladali slatkovodni uvjeti. Taj problem uočen je još davnih sedamdesetih godina koji se pokušao riješiti ugradnjom injekcijske zavjese koja bi spriječila kontakt slatke i slane vode.
Kasnije, su rađena hidrogeološka istraživanja kojima je cilj bio usmjeriti se na mogućnosti dobivanja većih crpnih količina vode uz manje tehničke zahvate na crpilištu.
Dobiveni su pozitivni rezultati u smislu usmjeravanja radova prema izvedbi novih kaptažnih zahvata u blizini već postojećih te je napuštena ideja o proširenju i produbljenju injekcijske zavjese.

Abstract (english)

The Novljanska Žrnovnica pumping station is located in the Žrnovnca bay near the town of Novi Vinodolski, and it supplies water needs of the surrounding towns and villages. The catchment area is made of carbonate and clastic rocks and it has all the geological characteristics of of the Dinarides. During the summer months tourism booms and the need for drinking water is higher in comparison to the rest of the year. For this reason the system is connected to the water supply system of the town of Rijeka due to its stability and the possibility of water supply during this period. Excessive pumping of groundwater lowers the water level in relation to the natural state of an aquifer and thus changes the equilibrium conditions. Consequently, the salt water boundary shifts towards the upper parts of the aquifer where freshwater conditions previously prevailed. This problem was noticed back in the seventies and an attempt was made to solve it by installing an injection curtain that would prevent the contact between fresh and salt water. Later on, hydrogeological research was carried out with the aim of obtaining larger pumping quantities of water with fewertechnical interventions at the pumping station. Positive results were obtained in terms of directing the work towards the implementation of new catchment interventions in the vicinity of the existing ones and the idea of widening and deepening the injection curtain was abandoned.

• Keywords: hidrogeološki odnosi; Novljanska Žrnovnica; crpilište; zaslanjenje vodonosnika; analiza kakvoće sirove vode
• Keywords (english): hydrogeological relations; Novljanska Žrnovnica; pumping station; aquifer salinization; groundwater quality analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:130:434573
• Study programme: Title: Geoenvironmental Engineering; specializations in: Geoenvironmental Engineering, Environmental Management, Water Management; Course: Water Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/ inženjerka inženjerstva okoliša (magistar/magistra inženjer/ inženjerka inženjerstva okoliša)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-11-08 08:23:53