Primjena statičkog piezo-penetrometra (CPTU) za geotehničku karakterizaciju mekanih sedimenata delte Neretve

master's thesis

• Title: Primjena statičkog piezo-penetrometra (CPTU) za geotehničku karakterizaciju mekanih sedimenata delte Neretve : diplomski rad
• Title (english): Application of piezocone test (cptu) for geotechnical characterization of soft sediments in Neretva valley : master's thesis
• Author: Renato Zagorščak
• Mentor: Biljana Kovačević Zelić (mentor)
• Mentor: Boris Kavur (sumentor)
• Committee member: Biljana Kovačević Zelić
• Committee member: Predrag Kvasnička
• Committee member: Petar Hrženjak
• Committee member: Boris Kavur
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2011-10-28, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Mining

Abstract

Na primjeru dubokih CPTU penetracija obavljenih u mekanim sedimentima delte Neretve na
prostoru luke Ploče, prikazane su mogućnosti primjene statičkog piezo-penetrometra (CPTU) za
geotehničku karakterizaciju mekanog tla, opisana je mjerna oprema i standardni postupci
ispitivanja te postupci obrade i interpretacije CPTU rezultata. Program geotehničkih istražnih
radova uključivao je izradu jedne vertikalne istražne bušotine (oznaka: BK-2) s kontinuiranim
jezgrovanjem nabušenog materijala do podine šljunka (do dubine 58 m) i provedbu tri duboke
CPTU penetracije (oznake: CPTUK-1, CPTU-BK-1 i CPTU-BK-3). U bušotini BK-2 obavljeno je
također 15 standardnih penetracijskih pokusa (SPT) i 19 pokusa terenskom krilnom sondom (FVT).
Usporedbe radi, prikazani su i rezultati dobiveni iz penetracije plosnatim dilatometrom (DMT-1)
koja je obavljena približno 700 m dalje od CPTUK-1 na širem prostoru luke Ploče.U radu su
detaljno prikazani svi izmjereni i izvedeni parametri iz penetracije CPTUK-1. Na osnovi rezultata
penetracije CPTUK-1 interpretirana je stratigrafija i obavljena identifikacija tipova tla pomoću
različitih empirijskih dijagrama. Dobiveni CPTU stratigrafski profili uspoređeni su sa sondažnim
profilom BK-2 koji je utvrđen terenskom i laboratorijskom klasifikacijom dobivene jezgre. Na
temelju rezultata penetracije CPTUK-1 i raspoloživih podataka interpretirane su geotehničke
značajke: stanja (naprezanje i koeficijent prekonsolidacije sitnozrnog odnosno relativna gustoća
krupnozrnog tla), čvrstoće, konsolidacije i stišljivosti tla. Interpretirane značajke uspoređene su s
rezultatima FVT i DMT pokusa.Na temelju dobivenih rezultata izvedeni su zaključci o
mogućnostima primjene statičkog piezo-penetrometra (CPTU) za geotehničku karakterizaciju
mekanog, normalno konsolidiranog tla.

Abstract (english)

Abstract: Examples of deep CPTU penetrations performed in soft sediments in Neretva valley at the location
of port Ploče, show the application possibilities of piezocone test for geotechnical characterization
of soft soil. The specification of measurement equipment, standard testing procedures, processing
and interpretation of CPTU data were also given. The programme of geotechnical investigations
included drilling of one vertical borehole (marked: BK-2) with continuous core collections down to
the upper gravel level (to depth of 58 m) and performing three CPTU penetrations (marked:
CPTUK-1, CPTU-BK-1 and CPTU-BK-3). There were 15 Standard Penetration Tests (SPT) and 19
Field Vane Tests (FVT) performed in borehole BK-2. For data comparison, The Flat Dilatometer
Test data, which was performed 700 m near CPTUK-1, was also presented. All the measured and
derived parameters were presented in detail. Based on the CPTUK-1 data, the stratigraphy and
identification of soil types were made through various of empirical charts. The stratigraphic
profiles were compared with probing profile BK-2 that was made through field and laboratory core
classification. Based on the CPUK-1 data and other available data, the following geotechnical
parameters were interpreted: state characteristics (preconsolidation stress, overconsolidation ratio
in fine-grained soils and relative density in coarse-grained soils), strength parameters, consolidation
characteristics and soil compressibility. The obtained parameters were compared with FVT and
DMT data. Based on the given data, the conclusions were made about the possibility of the
piezocone (CPTU) application for geotechnical characterization of soft, normally consolidated soil.

• Keywords: CPTU; geotehnička karakterizacija; penetrometar; luka Ploče; FVT; DMT; normalno konsolidirano tlo.
• Keywords (english): CPTU; geotechnical characterization; penetrometer; port Ploče; FVT; DMT; normally consolidated soil
• Language: croatian
• URN:NBN: urn:nbn:hr:169:231209
• Study programme: Title: Mining Engineering; specializations in: Mining engineering, Geotechnical engineering, Waste treatment and disposal; Course: Mining engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka rudarstva (magistar/magistra inženjer/inženjerka rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2016-03-29 10:37:09