Investigation of the initiation of the Hsien-du-shan rock avalanche in Taiwan using DDA

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In 2009, Typhoon Morakot brought heavy rainfall and severely damaged the mountainous area in Taiwan. The Hsien-du-shan rock avalanche occurred at ChiaHsien Township, Kaohsiung County, Taiwan, destroyed the Hsiaolin Village and killed more than 400 local residents. The case highlighted the great importance to identify the location and precursors of a possible rock avalanche. In this study, the initiation of the Hsien-du-shan rock avalanche is simulated by a discrete numerical analysis method, callcd Discontinuous Deformation Analysis (DDA). The simulation indicates that two slope failures occurred at the Hsien- du-shan rock avalanche due to the geometry of the sliding surface. The sliding rocks and soils can be briefly divided into two groups. The computational results fit well to the local information, which two giant bursts were heart during the slope failure. However, the time interval of the two slope failures in DDA was very short. Therefore, the slope failure can be also considered as a massive one.

Original languageEnglish
Title of host publication48th US Rock Mechanics / Geomechanics Symposium 2014
EditorsEmmanuel Detournay, Ray Sterling, Lee Petersen, Joseph F. Labuz, Will Pettitt
PublisherAmerican Rock Mechanics Association (ARMA)
Pages1744-1749
Number of pages6
ISBN (Electronic)9781634395236
Publication statusPublished - 2014 Jan 1
Event48th US Rock Mechanics / Geomechanics Symposium 2014: Rock Mechanics Across Length and Time Scales - Minneapolis, United States
Duration: 2014 Jun 12014 Jun 4

Publication series

Name48th US Rock Mechanics / Geomechanics Symposium 2014
Volume3

Other

Other48th US Rock Mechanics / Geomechanics Symposium 2014: Rock Mechanics Across Length and Time Scales
CountryUnited States
CityMinneapolis
Period14-06-0114-06-04

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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