One-dimensional numerical simulation for sabo damplanning using Kanako (Ver. 1.40): A case study at Cipanas, Guntur Volcanoes, West Java, Indonesia

Abstract

A debris flow is a phenomenon in which large quantities of water, mud, and gravel flow down a stream at ahigh velocity. Because debris flows have such high density and velocity, they can be highly destructive andcan have severe and tragic results such as destruction of homes, bridges, and infrastructures, as well as loss oflife. Numerical simulations are important to ensure that countermeasures such as sabo dams will be efficientbefore construction. This paper presents one-dimensional numerical simulations of a debris flow usingKanako, a user-friendly GUI-equipped debris flow simulator that allows good visualization and easyexplanation. Kanako (Ver. 1.40) was applied to a case study at Cipanas, Guntur Volcanoes, West Java,Indonesia. Simulations tested various conditions including cases without any sabo dams, with various typesof sabo dams either alone or in a series, and with full sabo dams.