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Journal of Mountain Science

, Volume 8, Issue 4, pp 603–610 | Cite as

Rainfall, landslide and debris flow intergrowth relationship in Jiangjia Ravine

  • Mingjian HuEmail author
  • Ren Wang
  • Jianhua Shen
Article

Abstract

Jiangjia Ravine is a world-famous debris flow valley in Dongchuan, Yunnan Province, China. Every year large numbers of landslides and collapses happened and caused enormous damages to people’s properties and lives. With longtime observation and testing in Jiangjia Ravine we had found out one kind of special landslide which had the characteristics of landslide and collapse. Landslide and collapse supplied sufficient materials for debris flow. When a debris flow broke out, some kind of intergrowth existed among rainfall, landslide and debris flow. In order to study the intergrowth and some key parameters, we carried out artificial rainfall landslide tests and model experiments to observe the phenomena such as collapse, surface slide and surface flow. By observing the experimental phenomena and monitoring water contents, the transformation process among landslide deposits and debris flow under the condition of rainfall had been analyzed. Research results revealed the relationship of this kind of intergrowth among rainfall, landslide and debris flow in Jiangjia Ravine. Meanwhile, it was found that this kind of intergrowth relationship existed only when the moisture content was in a certain range. That is, the critical state seemed to be existed in the transformation process.

Keywords

Landslide Debris-flow Rainfall, Intergrowth Moisture Content Jiangjia Ravine 

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References

  1. Hu MJ, Wang R, Zhang PC (2001) Primary research on the rainfall inspiring effect on landslide. Chinese Journal of Geotechnical Engineering 23(4): 454–457. (In Chinese)Google Scholar
  2. Iverson RM, Reid MA, LaHusen RG (1997) Debris-flow mobilization from landslides. Annual Review of Earth and Planetary Sciences 25: 85–138.CrossRefGoogle Scholar
  3. Iverson RM (1997) The physics of debris flows. Reviews of Geophysics 35(3): 245–296.CrossRefGoogle Scholar
  4. Major JJ, Iverson RM (1999) Debris-flow deposition: Effects of pore-fluid pressure and friction concentrated at flow margins. Geological Society of America Bulletin 111(10): 1424–1434.CrossRefGoogle Scholar
  5. Sassa K (1984) The mechanism starting liquefied landslides and debris flows. Proceedings of 4th International Symposium on Landslides. Toronto, Canada. pp 349–354.Google Scholar
  6. Sassa K (1985) The mechanism of debris flows. Proceedings of 11th International Conference on Soil Mechanics and Foundation Engineering. San Francisco, Balkema, Rotterdam, 12–16 August 3. pp 37–55.Google Scholar
  7. Wu JS, Kang ZC, Tian LQ (1990) Observation and Research of Jiangjia Ravine in Yunnan. Scientific publishing house. Beijing, China. pp 12–45. (In Chinese)Google Scholar

Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhanChina

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