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

Author

Listed:
  • Ming-Chien Chung

    (Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan)

  • Chien-Hsin Chen

    (Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan)

  • Ching-Fang Lee

    (Disaster Prevention Technology Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan)

  • Wei-Kai Huang

    (Disaster Prevention Technology Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan)

  • Chih-Hao Tan

    (Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei 114, Taiwan)

Abstract

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.

Suggested Citation

  • Ming-Chien Chung & Chien-Hsin Chen & Ching-Fang Lee & Wei-Kai Huang & Chih-Hao Tan, 2018. "Failure Impact Assessment for Large-Scale Landslides Located Near Human Settlement: Case Study in Southern Taiwan," Sustainability, MDPI, vol. 10(5), pages 1-25, May.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:5:p:1491-:d:145341
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    References listed on IDEAS

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    1. Sangseom Jeong & Kwangwoo Lee & Junghwan Kim & Yongmin Kim, 2017. "Analysis of Rainfall-Induced Landslide on Unsaturated Soil Slopes," Sustainability, MDPI, vol. 9(7), pages 1-20, July.
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