Abstract
Although considerable effort has been expanded into acoustic-emission research and related applications, scarcely any has been in the direction of particulate materials. One such material is soils where numerous earthen structures present challenging problems insofar as their stability and structural integrity is concerned. Such structures involving soils in whole or in part are earth dams, embankments, retaining walls, etc., where both fundamental and field problems exist. This paper is a brief review into our studies on the acoustic-emission response of soils. The majority of the work has been on laboratory-sized soil samples, although some large-scale model work and field instrumentation is also reported. Parallel studies as to the fundamentals of the emissions in soils are also noted. Thus far it appears that acoustic-emission monitoring techniques can provide the nucleus of a field monitoring technique to access stability of earthen structures.
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