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One of the most remarkable characteristics of debris flow is the competence for supporting boulders on the surface of flow,which strongly suggests that there should be some structure in the fluid body. This paper analyzed the grain compositions from various samples of debris flows and then revealed the fractal structure. Specifically,the fractality holds in three domains that can be respectively identified as the slurry,matrix,and the coarse content. Furthermore,the matrix fractal,which distinguishes debris flow from other kinds of flows,involves a hierarchical structure in the sense that it might contain ever increasing grains while the total range of grain size increases. It provides a possible mechanism for the boulder suspension.
One of the most remarkable characteristics of debris flow is the competence for supporting boulders on the surface of flow, which strongly suggests that there should be some structure in the fluid body. This paper analyzed the grain compositions from various samples of debris flows and then revealed the fractal structure. Specifically, the fractality holds in three domains that can be the respectively identified as the slurry, matrix, and the coarse content. the matrix fractal, which distinguishes debris flow from other kinds of flows, the hierarchical structure in the sense that it might contain ever increasing grains while the total range of grain size increases. It provides a possible mechanism for the boulder suspension.