Abstract
The technique of X-ray TV visualization is described in this study as applied to seepage failure experiments of a sand and gravel two-layer system. This technique allows for the precise visualization of the microscopic internal deformation processes, the dynamic development of a liquefaction front in a sand layer, the transport of sand particles into a gravel layer, the failure mode of a whole system and so on. This experimental technique provides a powerful and promising tool for understanding the dynamic interaction mechanisms of granular media/pore fluid systems.
