@ ŒfÚŽGŽi˜ajF “ú–{’nkHŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶W VolF 9-3Šª ”NF 1994”N •ÅF E.271-E.276•Å ’˜ŽÒi˜ajF - ƒ^ƒCƒgƒ‹i˜ajF - ´˜^i˜ajF
- ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒi‰pjF Maasaki KATAGIRI, Martin FAHEY ƒ^ƒCƒgƒ‹i‰pjF CENTRIFUGE MODELLING OF SPONTANEOUS LIQUEFACTION OF TAILING DAMS ´˜^i‰pjF
Tailings dams are often constructed in such a way that much of the dam is founded on loose saturated sandy tailings, giving rise to the possibility of liquefaction. As part of a pilot study of the application of centrifuge testing in this area series of centrifuge model tests was conducted to observe the effect of a single impact load on an embankment on loose or very loose saturated sand. The paper describes the tests conducted, and presents records of the acceleration and pore pressure during and immediately following the impact, showing the differences between the behaviour in the loose and very loose sand. When the sand under the embankment was in a very loose state, failure occurred, with the mechanism being a deep circular failure. This failure is thought to be due to liquefaction of the base layer. However, when the sand was not quite so loose, failure was not observed. ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF - ‹æ•ª @@@ˆÏˆõ‰ï˜_•¶W