Pilot study to explain runout distances of debris flow and immature debris flow considering depositing rate

In Japan, many debris flows and sediment-laden floods cause serious damage to human life property. Effective measures require high-accuracy reproduction prediction of runout distance (bed variation reach) via numerical simulations. One possible method increase the accuracy simulation results involves reviewing methods used evaluate depositing rate for that contain different sizes sediments. This study performed experiments using an artificial channel high-speed cameras identify parameters govern rate. The implemented exhibited a change in slope point; thus, upper reach differed from lower reach. showed equation representing is closely related flow velocity. Additionally, can be determined if other are consistently considered.