Susceptibility assessment of rainfall induced landslides: A case study of the debris flow on July 27, 2011 at Umyeonsan (Mt.), Seoul, Korea

Chan Young Yune, Sangseom Jeong, Myoung Mo Kim

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

In Korea-70% of which is covered by mountains-landslides and debris flow hazards are frequently occurring in summer. Most of these hazards have been concentrated around mountainous region. On July 27, 2011, however, a total of 33 debris flows occurred in Umyeonsan (Mt.), around where is densely populated residential areas in Seoul, Korea. The debris flow hazard resulted in 16 fatalities and extensive damage to houses, roads, and other properties. Most of the debris flows were initiated from shallow landslides which were triggered by an intensive rainstorm with a peak intensity of 112.5 mm/h. This paper provides a comprehensive description of the debris flow hazards in Umyeonsan with the morphological, hydrological, and geotechnical features of the watershed. Also, GIS-based prediction methods of landslide susceptibility are highlighted. Based on this, countermeasures by combining elements of engineering solution such as ecological planting, stone channels, soil nailing, and concrete barriers, have been designed and constructed.

Original languageEnglish
Pages265-278
Number of pages14
Publication statusPublished - 2017
Event19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017 - Seoul, Korea, Republic of
Duration: 2017 Sep 172017 Sep 22

Other

Other19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017
CountryKorea, Republic of
CitySeoul
Period17/9/1717/9/22

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Yune, C. Y., Jeong, S., & Kim, M. M. (2017). Susceptibility assessment of rainfall induced landslides: A case study of the debris flow on July 27, 2011 at Umyeonsan (Mt.), Seoul, Korea. 265-278. Paper presented at 19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017, Seoul, Korea, Republic of.