Abstract
The collapse phenomena of a powder solids layer are observed frequently in natural disasters such as washouts and snowslides. It is important to make these behaviors clear.
In this study, two kinds of dried powder solids (carborundam (particle diameter d: 0.505mm) in the odd numbered layers and glass beads (d: ∅ 1.015mm) in the even numbered layers) are packed as parallel layers and the collapsed states obtained by rotating the side-wall are photographed. Furthermore, three kinds of powder solids with water added having different moisture contents are used in the experiment. The effect of the moisture content and the rotating angle on the collapsed state is investigated. Table 4 shows the main rusults.
