FLOW DEFORMATION BEHAVIOR OF CLEAN SAND CAUSED BY WATER INFLOW UNDER CONSTANT SHEAR STRESS

摘要

The static liquefaction with constant shear stress under the drained condition could produce flow behavior even at the low initialstatic shear stress. In addition, the amount of water needed to produce the flow behavior on clean sand could be identified in thistest. It is found that the dilation behavior of sand is defined by the initial density. The denser the initial density, the morevolumetric expansion developed. It is also found that at the start of flow failure, the flow rate of initially denser sand would befaster than that of the looser one. This result shows a contrast conception that the dense sand might be more resistant to the flowslides.