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Investigation and Mechanism Clarification of the 2011.1.5 Atom-en Landslide in Kashima Area, Matsue City

  • Kenji Hatanaka
  • Yasuhiro Mitani
  • Austin Okeke
  • Yohei Kuwada
  • Fawu WangEmail author
Chapter
Part of the Environmental Science and Engineering book series (ESE)

Abstract

After a heavy snowfall between Dec 28, 2010 and Jan 4, 2011, a landslide occurred on a cut slope at the rear mountain edge of Atom-en, Kashima area, Matsue city on 5 January 2011. The aim of this study is to clarify the mechanism of the landslide. Three main works were carried out. Field survey was conducted to observe the structure of the landslide and measure the in situ shear strength of the soil on the sliding surface. Laboratory test was conducted to obtain soil strength properties such as permeability and shear strength. Finally, back analysis using Janbu’s method was conducted to obtain the shear resistance of the sliding mass in the lower part of the slope, and to evaluate the effect of rise in groundwater level, while Flac3D software program was used to clarify the deformation process of the landslide. The investigation and analysis indicated that the slope behind Atom-en has complex geologic structure, composed of completely weathered tuff and shale. The unfavorable geological structure and condition were the inherent factors that contributed to the landslide occurrence, while snow melting was the main triggering factor.

Keywords

Groundwater Level Pore Water Pressure Landslide Occurrence Internal Friction Angle Direct Shear Test 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Kano K, Yoshida F (1985) Geology of Sakaiminato area. Geological map with a scale of 1 to 50,000. Geol Surv Japan:57 Google Scholar
  2. Matsuura S (1998) Difficulties in predicting snow-induced landslides. J Japan Landslide Soc 34(4):39–46CrossRefGoogle Scholar
  3. Sato H, Shiraishi S, Ito T (2004) The behavior of the tertiary landslides through the snowy period in Niigata prefecture, central Japan. J Japan Landslide Soc 41(1):37–42CrossRefGoogle Scholar
  4. Shiraishi K (1988) Occurrence factor of landslide in snow season. In: Proceedings of the 16th symposium handout in the Japan landslide society, Niigata Branch, pp. 30–40Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Kenji Hatanaka
    • 1
  • Yasuhiro Mitani
    • 1
  • Austin Okeke
    • 1
  • Yohei Kuwada
    • 1
  • Fawu Wang
    • 1
    Email author
  1. 1.Research Center on Natural Disaster ReductionShimane UniversityMatsueJapan

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