Comparison between plate jacking and large flat jack test results of rock mass deformation modulus (CROSBI ID 214098)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kavur, Boris ; Štambuk Cvitanović, Nataša ; Hrženjak, Petar ;
engleski
Comparison between plate jacking and large flat jack test results of rock mass deformation modulus
The results of two types of loading tests for the determination of the in situ rock mass deformation modulus (Em), namely, large flat jack (LFJ) and plate jacking tests (PJT), which were carried out side by side during the exploratory phase of the Karun 3 hydro-electric project in Iran, have been compared, correlated and analysed. The comparison includes sixteen PJTs and twelve LFJ tests. PJT moduli obtained from displacements measured in depth are much higher than the LFJ moduli and are sometimes even higher than the modulus of the intact rock material. However, this investigation has proved that they can be well correlated with the corresponding LFJ results and reduced by factors established in this comparison. The analyses showed that uncertainties connected to PJT results are caused by the restraining effects of the adjoining rock, and the disturbing effects of blast damage, and also that the scattering of results occurs due to insufficient volumes of rock mass tested. A new empirical relationship for indirect estimates of Em based on the RMR classification scheme is made from field data presented in this investigation and other reliable published data.
Rock mass deformation modulus ; Plate jacking test ; Large flat jack test
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Podaci o izdanju
73
2015.
102-114
objavljeno
1365-1609
10.1016/j.ijrmms.2014.09.022
Povezanost rada
Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo