The design of well Z-1/1 on the wellfield Bikana near Virovitica : master’s thesis

Kako bi se nadoknadio gubitak zdenca Z-1 na crpilištu Bikana uslijed javljanja problema s pjeskarenjem, krenulo se u izvedbu zdenca Z-1/1. Cilj ovog rada je prikazati sve korake koji su se morali proći kako bi se zdenac izveo. Prvi dio rada prikazuje geografske, geološke, hidrogeološke i hidrološke značajke područja na kojem se nalazi crpilište. U drugoj polovini rada prikazani su parametri zdenca i vodonosnika na temelju pokusnog crpljenja. Prvi korak pokusnog crpljenja je bilo crpljenje u koracima, pomoću kojeg smo odredili pojedine parametre zdenca, te linearne gubitke vodonosnika i nelinearne gubitke zdenačkog zacijevljenja. Narednom fazom, crpljenjem stalnom količinom prikazani su transmisivnost vodonosnika te hidraulička vodljivost. Na temelju prikupljenih podatak prikazan je zaključak o kvaliteti izvedbe zdenca.In order to compensate for the loss of the Z-1 well at the Bikana wellfield due to the problem of sandblasting, it was necessary to make the Z-1/1 well. The goal of this thesis is to present all the steps necessary for the creation of the well. The first part of the thesis presents geographic, geological, hydrogeological and hydrological features of the area where the wellfield is located. In the second part of the thesis, parameters of the well and aquifer are presented on the basis of the test pumping. The first step of the test pumping was the divergent rate test pumping, by which we determined certain parameters of the well, as well as the linear loss of the quifer and the non-linear loss caused by the curvature of the well's tube. In the next phase, the test pumping at a constant rate showed the aquifer's transmissibility and hydraulic conductivity. Based on the collected data, the conclusion on the quality of the well performance was presented