Abstract:

Rock-filled embankment has become a general type of road embankment so that these rock tunnel spoil can be used. It is obviously necessary to carry on a study of highway embankment stability in earthquake prone areas, because it is the new period of seismic activity since Wenchuang earthquake in China. The experiment of small-sized shaking table has some drawbacks because of its size and load-bearing capacity, but it is not expensive and can be repeated. Its outcome is the premise conditions of large-size shaking table and referential experience of engineering practice. The paper presented a small-sized shaking table experiment of rock-filled embankment and the purpose of this experiment is attention to stability in seism. The rock-filled embankment located in stage fluctuation zone of reservoir. The experiment confirmed that water was a critical factor during the highway embankment failure. The inside embankment slope is failure at first before the water level is raised and the outside slope will be failure with the development of shaking. However, the outside slope is failure at first in the condition of high water level. There are strong scouring and undercutting effects during shaking.

Key words: rock-filled embankment, seism, shaking , table, reservoirs