Application of simulation technique on debris flow hazard zone delineation: a case study in the Daniao tribe, Eastern Taiwan

作者: M. P. Tsai , Y. C. Hsu , H. C. Li , H. M. Shu , K. F. Liu

DOI: 10.5194/NHESS-11-3053-2011

关键词:

摘要: Abstract. Typhoon Morakot struck Taiwan in August 2009 and induced considerable disasters, including large-scale landslides debris flows. One of these flows was experienced by the Daniao tribe Taitung, Eastern Taiwan. The volume excess 500 000 m3, which substantially larger than original design mitigation capacity. This study considered flow simulations various volumes at same area using DEBRIS-2D numerical program. program uses generalized Julien Lan (1991) rheological model to simulate In this paper, sensitivity factor on spreading is amount initial volume. These simulated results amounts demonstrated that maximal depths were almost deposited area, also revealed a 20% variation estimating total particular site 2.75% final front position. Because limited watershed terrain, hazard zones not expanded. Therefore, sensitive.

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