最近の豪雨による土砂災害と防災対策の課題

摘要

以上，筆者らが関わった最近の豪雨による土砂災害の調査研究で明らかになったことや提起された課題をまとめた。昨年の台湾八八水災から，我が国においても，「深層崩壊」に対して社会的関心が高まっている。防災・減災を目指すには，「土石流」，「崖崩れ」，「深層崩壊」など，自然災害に関する用語を市民に正しく伝えることが最初の一歩であると考える。%Slope disasters have occurred in various places during this rainy season. In Yamaguchi prefecture, many houses were flooded up to the floor and the roads and railways were made impassable at several places by landslides. Also the debris flow disasters occurred around Hofu city last year. The interval of the occurrence such as a sudden heavy rainfall becomes shorter. Therefore, it is important to learn any lessons of the recent disasters, and to revise how to effectively contribute to disaster prevention. This paper summarizes these disasters which we had investigated, and suggested geotechnical missions to protect citizen from the coming disaster.