Author(s): Norio Harada, Ichirou Kimura, Yoshifumi Satofuka, Takahisa Mizuyama

Linked Author(s): Norio Harada, T. Mizuyama

Keywords: Backwater; Concrete-slit Sabo-dam; Debris-wood; Experiment; Wire net;

Abstract: In 2017, heavy rains upstream of Sabo dams in northern Kyushu, Japan, caused several downstream disasters attributable to debris-wood flow. It is thus necessary to implement protective measures throughout the entire river basin. The potential effects of such measures on concrete-slit Sabo dams installed in regions of low-gradient flow must be examined. We describe how to capture debris-wood in the backwaters of concrete-slit Sabo dam pools. We also propose the installation of wire-nets to prohibit debris-wood spill-out, and provide detailed diagrams illustrating the implementation of such countermeasures.

DOI: https://doi.org/10.3850/38WC092019-0460

Year: 2019