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Open AccessArticle

Failure Impact Assessment for Large-Scale Landslides Located Near Human Settlement: Case Study in Southern Taiwan

1
Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan
2
Disaster Prevention Technology Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan
*
Author to whom correspondence should be addressed.
Sustainability 2018, 10(5), 1491; https://doi.org/10.3390/su10051491
Received: 16 March 2018 / Revised: 25 April 2018 / Accepted: 7 May 2018 / Published: 9 May 2018
In 2009, Typhoon Morakot caused over 680 deaths and more than 20,000 landslides in Taiwan. From 2010 to 2015, the Central Geological Survey of the Ministry of Economic Affairs identified 1047 potential large-scale landslides in Taiwan, of which 103 may have affected human settlements. This paper presents an analytical procedure that can be applied to assess the possible impact of a landslide collapse on nearby settlements. In this paper, existing technologies, including interpretation of remote sensing images, hydrogeological investigation, and numerical analysis, are integrated to evaluate potential failure scenarios and the landslide scale of a specific case: the Xinzhuang landslide. GeoStudio and RAMMS analysis modes and hazard classification produced the following results: (1) evaluation of the failure mechanisms and the influence zones of large-scale landslides; (2) assessment of the migration and accumulation of the landslide mass after failure; and (3) a landslide hazard and evacuation map. The results of the case study show that this analytical procedure can quantitatively estimate potential threats to human settlements. Furthermore, it can be applied to other villages and used as a reference in disaster prevention and evacuation planning. View Full-Text
Keywords: large-scale landslide; failure impact assessment; GeoStudio; RAMMS; Xinzhuang Village large-scale landslide; failure impact assessment; GeoStudio; RAMMS; Xinzhuang Village
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Chung, M.-C.; Chen, C.-H.; Lee, C.-F.; Huang, W.-K.; Tan, C.-H. Failure Impact Assessment for Large-Scale Landslides Located Near Human Settlement: Case Study in Southern Taiwan. Sustainability 2018, 10, 1491.

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