On-site survey of the areas affected by the sediment-related disasters caused by the rainfall on June 21, 2023

Graduate School of Science and Engineering Department of Engineering Ocean Civil Engineering Program
Research and Education Center for Natural Hazards
Sako Kazunari

https://www.oce.kagoshima-u.ac.jp/~soil/ https://bousai.kagoshima-u.ac.jp/
  • SDGs目標11
  • SDGs目標13
  • SDGs目標09
  • uken

Background and objectives of activities


During the rainy season and typhoon season, Kagoshima Prefecture is frequently hit by sediment-related disasters caused by heavy rain. When sediment-related disasters occur, they can have a major impact on local life and the economy, cutting off roads and other infrastructure. As an advisor on sediment-related disaster countermeasures for the Ministry of Land, Infrastructure, Transport and Tourism and Kagoshima Prefecture, I carry out on-site surveys of sediment-related disaster sites in Kagoshima Prefecture, as well as providing technical guidance and advice on determining the causes and restoration methods.

活動の背景・目的
We investigated the mechanism of the collapse of the retaining wall and the road embankment, and examined future investigation and recovery policies at the site where the road was buried after the entire road embankment collapsed.

Summary of Activities

Due to the heavy rains on June 21, 2023, a road in Uken Village, Oshima County, Kagoshima Prefecture, was damaged by a landslide. We therefore conducted an on-site survey of the landslide site with the staff and civil engineers of the Road Maintenance Division of the Kagoshima Prefecture Public Works Department and Uken Village.

活動の概要
We conducted an on-site investigation into the cause of the collapse of the damaged road, the extent of the damage, and the restoration method.

Expected Benefits