Effect of the slope of flume bed to the debris potential flow

Abstract

This article aims to determine the effect of the basic flume slope to the potential flow of debris flow. This article discusses the combination of open check dam type (beam type) placed at the top and the closed check dam type placed at the bottom with variation of the distance between the checks of dam in a flume with the size used in the experiment that is 30 cm x 32.8 cm x 1200 cm with a slope of 10°. The composition of the sediment used is type D50. The results of this study using three types of base flume slope are the greater the slope of the base flume will result in a greater debris flow on the condition without wood and on conditions with wood. The larger the slope, the greater the sediment and wood that passes from the check dam series. The smaller the base slope of the flume, the larger the timber being retained on the open check dam.