“…In particular, not only the appropriate specification and arrangement for baffle design has still not been suggested but also the energy reduction due to frictional loss among grains in design of flexible barrier has not been considered, which can accordingly lead to * Corresponding author: yune@gwnu.ac.kr excessive design and increased cost. To understand the dynamic behavior of debris flows, dynamic interaction and energy dissipation caused by debris flow countermeasures, most of researchers have conducted debris flow experiments using artificial and miniaturized flumes [1,5,9,12,15]. The debris flow in small-scale flume, however, may exhibit disproportionalities in terms of viscous shear and pore pressures due to scale effect of flow [6].…”