Journal of Mountain Science

, Volume 8, Issue 4, pp 619–628 | Cite as

Numerical investigation on the initiation mechanism of debris-flow under rainfall

  • Xiaobing LuEmail author
  • Tianli Ye
  • Peng Cui
  • Kaiheng Hu
  • Xiaoqing Chen


Rainfall is an important factor to trigger the debris flow. Numerical simulation on the responses of slopes and the initiation of debris flow under rainfall was processed by using the software FLAC2D based on the soil parameters in Weijia Gully, Beichuan County, Sichuan Province, China. The effects of the slope angle, rainfall intensity, soil parameters on the developments of the stress and pore pressure and deformation of the slope were studied. It indicates that large displacements of the slope are mainly located near the slope toe. With the increase of the rainfall intensity the stability of the slope decreases and so the debris-flow is easy to occur.


Debris-flow Initiation mechanism Rainfall Numerical simulation 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Aleotro P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247–265.CrossRefGoogle Scholar
  2. Chen XQ, Cui P, Feng ZL et al. (2006) Artificial rainfall experimental study on landslide translation to debris flow. Chinese Journal of Rock Mechaics & Engineering 25(1): 106–116. (In Chinese)Google Scholar
  3. Cui Peng, Liu SQ, Tang BX et al. (2003) Debris flow prevention pattern in national parks-Taking the world natural heritage Jiuzhaigou as an example. Science in China Series EEngineering. & Material Science 46(suppl.): 1–11. (In Chinese)Google Scholar
  4. Cui P, Ge YG, Zhuang JQ, et al. (2009) Soil evolution features of debris flow waste-shoal land. Journal of Mountain science 6(2): 181–188.CrossRefGoogle Scholar
  5. Cui P, Liu SJ, Tan WP. (2000) Progress of debris flow forecast in China. Journal of Natural disasters 9(2): 10–15. (In Chinese)Google Scholar
  6. Cui P (1992) Study on condition and mechanisms of debris flow initiation by means of experiment. Chinese Science Bulletin 37(9): 759–763. (In Chinese)Google Scholar
  7. Chen CY, Chen TC, Yu FC, et al. (2005) Rainfall duration and debris-flow initiated studies for real-time monitoring. Environment Geology 47: 715–724.CrossRefGoogle Scholar
  8. Iverson RM, Reid ME, LaHusen RG. (1997) Debris-flow Mobilization from landslides, Annual Review of t Earth and Planet. Science 25:85–138.Google Scholar
  9. Lu XB, Zheng ZM. (2006) Formation of water film in saturated sand. ACTA Mech. Sinica 22: 377–383.CrossRefGoogle Scholar
  10. Lu XB, Cui P (2010) On the study of water film in saturated soils. International Journal of Sediment Research 25: 221–232.CrossRefGoogle Scholar
  11. Lu XB, Cui P, Hu KH et al. (2010) The initiation and development of water film by seepage. Journal of Mountain Science, 7: 361–366CrossRefGoogle Scholar
  12. Reid ME, LaHusen RG, Iverson RM. (1997) Debris-flow initiation experiments using diverse hydrologic triggers. In: Cheng-Lung Chen, (eds.) Debris-flow hazards mitigation: Mechanics, Prediction, and Assessment. ASCE 1–11.Google Scholar
  13. Wu LZ, Zhang LM (2009) Analytical solution to 1D coupled water infiltration and deformation in unsaturated soils. International Journal of Numerical and Analytical Methods in Geomechanis 33(6): 773–790.CrossRefGoogle Scholar
  14. Ye TL (2011) Study of the Initiation of Debris Flow after Strong Earthquake, Thesis for Master Degree, Institute of Mechanics, Chinese Academy of Sciences, Beijing.Google Scholar
  15. Zhang LL, Zhang LM and Tang WH (2005) Rainfall-induced slope failure considering variability of soil properties. Geotechnique 55(2): 183–188.CrossRefGoogle Scholar

Copyright information

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

Authors and Affiliations

  • Xiaobing Lu
    • 1
    Email author
  • Tianli Ye
    • 1
  • Peng Cui
    • 2
  • Kaiheng Hu
    • 2
  • Xiaoqing Chen
    • 2
  1. 1.Institute of MechanicsChinese Academy of ScienceBeijingChina
  2. 2.Institute of Mountain Hazards and EnvironmentChinese Academy of ScienceChengduChina

Personalised recommendations