Prikupljanje i obrada podataka o diskontinuitetima potrebnih za procjenu hidrogeoloških parametara stijenskih masa

master's thesis

• Title: Prikupljanje i obrada podataka o diskontinuitetima potrebnih za procjenu hidrogeoloških parametara stijenskih masa : diplomski rad
• Title (english): Collection and analysis of discontinuities data required for estimation of hydrogeological parameters of rock masses : master’s thesis
• Author: Nikolina Bralić
• Mentor: Petar Hrženjak (mentor)
• Committee member: Petar Hrženjak
• Committee member: Jelena Parlov
• Committee member: Andrea Bačani
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2015-02-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

U ovom radu su prikazane teorijske i praktične osnove dviju inženjerskih disciplina, mehanike
stijena i hidrogeologije, na temelju kojih je izvršena procjena hidrogeoloških parametra stijenske
mase. Terenskim mjerenjima prikupljeni podaci o značajkama diskontinuiteta obrađeni su i
primjenjeni u idealiziranom modelu toka podzemne vode sa svrhom izračuna hidrogeoloških
parametara (hidraulička vodljivost i pukotinska poroznost). Procjena je u ovom radu obavljena na
eksploatacijskom polju „Sv. Juraj – Sv. Kajo“, smještenom u fliškim srednjoeocenskim naslagama.
Interpretacijom podataka sa svih mjesta mjerenja određeni su skupovi diskontinuiteta u litološkim
jedinicama kalkarenitu i kalksiltitu, kojima su dodijeljene srednje vrijednosti njihovih
geometrijskih značajki. Podaci o razmaku, zijevu i vrijednosti koeficijenta hrapavosti JRC
pojedinih skupova primjenjeni su u kubičnom zakonu za opis toka podzemne vode kroz pukotine te
su dobivene vrijednosti hidrauličke vodljivosti. Usporedbom dobivenih rezultata s interpretiranim
rezultatima pokusnih crpljenja uočena je velika podudarnost. Iz podataka o zijevu i broju pukotina
izračunata je pukotinska poroznost, koja je u obje obrađene litološke jedinice odgovarala njihovim
reprezentativnim vrijednostima za karbonatne stijene.

Abstract (english)

Abstract: This thesis contains theoretical and practical basics of two different fields of study, geomechanics
and hydrogeology, which were basis for estimation of hydrogeological parameters of rock masses.
Field surveys provided data about discontinuities features which were analyzed and used in
idealized groundwater flow model with aim to determine the value of hydrogeological parameters
(hydraulic conductivity and fracture porosity). Evaluation presented in this thesis was done on
exploitation field “Sv. Juraj – Sv. Kajo”, based in middle Eocene flysch basin. With data
interpretation from all measuring spots, sets of discontinuities were determined within calcarenite
and calcsiltite lithological units, in which the median values of their geometrical characteristics
were used. Spacing, fracture aperture and JRC values of each individual set were used to determine
values of hydraulic conductivity using the cubic law (description of groundwater flow through
fractures). Comparison of theoretical results with data obtained with field survey results
interpretation showed obvious congruence. Using fracture aperture and number of fractures, the
value of fracture porosity was determined for both lithological units and it matched representative
values for carbonate rocks.

• Keywords: hidrogeološki parametri; hidraulička vodljivost; pukotinska poroznost; diskontinuitet; stijenska masa
• Keywords (english): hydrogeological parameters; hydraulic conductivity; fracture porosity; discontinuity; rock masses
• Language: croatian
• URN:NBN: urn:nbn:hr:169:519847
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2015-12-14 13:59:25