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標題: 2018年北海道胆振東部地震引起的厚真町堰塞湖之形成與潰決潛勢分析
Formation and Dam Breach Analysis of the 2018 Hokkaido Iburi-Tobu Earthquake-Induced Landslide Dam in Atsuma Town, Japan
作者: 吳振佑
Chen-Yu Wu
Chia-Hsing Lin
Kuo-Wei Chen
Chen-Yu Chen
關鍵字: 堰塞湖潰壩;洪水演算;影響範圍;北海道胆振東部地震;landslide dam breach;flood routing;impact area;Hokkaido Iburi-Tobu earthquake
Project: 中華水土保持學報, Volume 50, Issue 4, Page(s) 154-165

Landslide dams, whether induced by earthquake or rainfall, may cause serious secondary disasters. Therefore, assessing the disaster impact after a landslide dam breach is crucial for disaster response work. This study used a free two-dimensional flood-routing model on HEC-RAS to establish a standard operating procedure for rapidly assessing the impact of such a breach to protect downstream targets. The landslide dam caused by the Hokkaido earthquake in Atsuma Town, Japan on September 6, 2018 was studied in this research. A numerical model was selected to simulate the dam breach and analyze flood wave characteristics, including peak discharge, flooding arrival time, and the inundation area. Landslide dam heights and breach durations were simulated to uncover disaster risks. From these results, the emergency operation center can delimit the inundated area, protect targets, create emergency evacuation plans, and set early-warning criteria.
Appears in Collections:興大人文學報第63期

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