Varijantna rješenja sanacije nasipa za obranu od poplava Podturen

master's thesis

• Title (english): Variant solutions for the remediation of Podturen levee
• Author: Ivana Jurić
• Mentor: Mario Bačić (mentor)
• Committee member: Mario Bačić (predsjednik povjerenstva)
• Committee member: Marijan Car (član povjerenstva)
• Committee member: Danijela Jurić Kaćunić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Geotechnical Engineering); Zagreb
• Defense date and country: 2022-02-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Geotechnology

Abstract

U ovom radu analiziraju se varijantna rješenja sanacije nasipa za obranu od poplava Podturen. Cilj je bio riješiti problem procjeđivanja u temeljnom tlu ispod nasipa, koje tijekom visokih voda rezultira s pojavom vrulja (podvira) na nizvodnoj strani, a sve radi velikih izlaznih hidrauličkih gradijenata na površini terena. Provedeni su detaljni geotehnički terenski i laboratorijski istražni radovi, na temelju kojih je određen model tla i hidrauličke karakteristike pojedinog sloja. Korištenjem računalnog programa GeoStudio (SEEP/W) provedene su numeričke analiza kojima su određeni kritični hidraulički gradijenti. Zaključeno je da na pojavu velikih hidrauličkih gradijenata, u najvećoj mjeri utječe veličina koeficijenata propusnosti te debljina slojeva na površini, kao i odnos koeficijenta propusnosti tih slojeva s koeficijentom propusnosti dobro propusnih šljunaka u podlozi. Varijantna rješenja problema procjeđivanja, koja su u ovom radu prikazana, obuhvaćaju ugradnju PVC talpi s krune nasipa odnosno izvedbu odteretnih rovova i bunara na nizvodnoj strani.

Abstract (english)

This master thesis variant solutions for the rehabilitation of the embankment for flood protection Podturen are analyzed. The aim was to solve the problem of seepage in the foundation soil below the embankment, which during high waters results in the appearance of sand boils (springs) on the downstream side, all due to large exit hydraulic gradients on the terrain surface. Detailed geotechnical field and laboratory research works were carried out, on the basis of which the soil model and hydraulic characteristics of each layer were determined. Using the computer program Geostudio (SEEP/W), numerical analyzes were performed to determine the critical hydraulic gradients. It was concluded that the occurance of large hydraulic gradients is largely influenced by the size of the permeability coefficients and the thickness of the layers on the surface, as well as the ratio of the permeability coefficient of these layers with the permeability coefficient of well-permeable gravels in the substrate. Variant solutions to the problem of seepage, which are presented in this thesis, include the installation of PVC sheet pile wall from the embankment croest, as well the construction of relief trenches and wells on the downstream side.

• Keywords: nasip za obranu od poplava; procjeđivanje; podviri; hidraulički gradijent; koeficijent propusnosti; PVC talpe; odteretni bunari
• Keywords (english): levee; seepage; sand – boils; hydraulic gradient; conductivity; PVC slabs; relief trenches; pressure relief wells
• Language: croatian
• URN:NBN: urn:nbn:hr:237:344811
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-04-04 07:15:41