Naslov
GEOTECHNICAL 3D MODELLING IN SOFT ROCKS USING RNK METHOD
(Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst)

Autori
Ortolan, Želimir ; Zlatović, Sonja ; Vrkljan, Ivan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst / Vrkljan, Ivan - Amsterdam : A.A. Balkema Publishers, 2009, 489-494

ISBN
978-0-415-80481-3

Skup
Eurock 2009

Mjesto i datum
Cavtat, Hrvatska, 29.10.2009. - 31.10.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
RNK method; rock; weak layer; correlation; plasticity index; angle of internal friction

Sažetak
Importance of the detection of the low strength zones for the engineering geological and geotechnical modelling is stressed as well as illustrated with an example, and an appropriate method is described. The highest values of liquid limit and plasticity index in a geotechnical column regularly correspond to the lowest values of angle of internal friction. RNK method singles out one layer, often one of the weakest layers, as a reference, and uses relatively simple but numerous and very carefully performed tests to organize and compare data obtained in the area – allowing very useful extrapolations, and detection of all weak layers. Correlation of plasticity index and angle of internal friction is presented with several new series of very carefully obtained data. An instability in very fractured limestone is analysed in detail, which occurred during excavation at the shipyard near Rijeka in Croatia, because the low strength zone was undetected and its possible importance underestimated.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo

POVEZANOST RADA