Advertisement

Journal of Mountain Science

, Volume 8, Issue 2, pp 328–335 | Cite as

Mechanical analysis for progressive failure of debris landslide

  • Haibo MiaoEmail author
  • Kunlong Yin
  • Deying Li
Article

Abstract

It is of significance to research failure mechanism of debris landslides that are widespread in the Three Gorges Reservoir Area. Based on the statistical analysis of the developmental law and failure mode of debris landslides in the Three Gorges Reservoir, the mode of progressive failure is found. The mechanical model for progressive failure of debris landslides with two slip bands is also established by applying slice method. According to the results of the downslide force between adjacent slices, if the downslide force of lower slice is larger than zero, the slice fails along the major sliding surface, otherwise it is stable. In result, the failure range is obtained. The stress function can be determined through dimensional analysis of failure slice. According to static boundary conditions of the slice, stress state of any point in the slice can be obtained. Then stress state of any point in the secondary slip band can also be established. The failure of the secondary slip band is judged on the basis of Mohr-Coulomb failure criterion. Therefore, a mechanical method is proposed to analyze the progressive failure of debris landslide with two slip bands.

Keywords

Debris landslide Progressive failure Mechanical model 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Wang SQ (1999) The monitoring and prediction of the landslides in the Three Gorges Reservoir. Beijing: Geology Press. pp 77–79(In Chinese)Google Scholar
  2. Liu ZY, Chen SW (2002). Evolution model of progressive failure of strain-softening soil slopes. Journal of Zhengzhou University (Engineering Science) 23(2): 37–40.Google Scholar
  3. Wang GS (2000) The progressive failure of slope and the stability analysis. Chinese Journal of Rock Mechanics and Engineering 19(1): 29–33.Google Scholar
  4. Shao J (2007) Study on progressive failure of the excavated slope and the pre-reinforced measurement with pile and anchor. PhD thesis, Southwest Jiaotong University, Chengdu, Sichuan.Google Scholar
  5. Shao J, Xie HQ, Zhou DP (2007) Determination of shear sliding section and its effect on stability of flathead shaped excavated slope. Rock and soil mechanics 28(2): 386–390.Google Scholar
  6. Hu QJ (2008) Study on progressive failure mechanism and determination of the toe segment slippage length for large consequent slope. PhD thesis, Southwest Jiaotong University, Chengdu, Sichuan.Google Scholar
  7. Skempton AW (1964) Long term stability of clay slopes. Geotechnique 14(1):77–101.Google Scholar
  8. Gilbert RB, Long JH, Moses BE. Analytical model of progressive slope failure in waste containment systems. International Journal for Numerical and Analytical Methods in Geomechanics 20: 35–36.Google Scholar
  9. Jun Otani, Yoshiaki Kikuchi, Toshifumi Mukunoki (2003) Investigation of progressive failure in composite soils using an X-ray ct scanner. Geomechanics 642–653.Google Scholar
  10. Rainer P, Martin B, Rudolf H, et al. (2005) Geomechanics of hazardous landslides. Journal of Mountain Sciences 2(3): 211–217.CrossRefGoogle Scholar
  11. Miao TD, Ma CW, Wu SZ (1999) Evolution model of progressive failure of landslide. Journal of Geotechnical and Geoenvironmental Engineering 827–831.Google Scholar
  12. George MF, Jacob JB, Esterhuizen, Michael Duncan J (2001) Progressive failure of lined waster impoundments. Journal of Geotechnical and Geoenvironmental Engineering: 841–848.Google Scholar
  13. Chowdhury RN, Tang WH, Sidi I (1987) Reliability model of progressive slope failure. Geotechnique 37(4): 467–481.CrossRefGoogle Scholar
  14. Tu F (2004) Reliability of progressive failure of soil slope. Rock and Soil Mechanics 25(1): 87–90.Google Scholar
  15. Wang ZW, Wang GS (2005) FLAC simulation for progressive failure of fissured clay slope. Rock and Soil Mechanics 26(10): 1637–1640.Google Scholar
  16. Tan WH, Wang JC, Zhou Rd (2009) Physical and numerical simulation on progressive failure of rock slope. China Mining Magazine 9(5): 56–58.Google Scholar
  17. Chen YJ, Wang JC (2006) Numerical simulation research on progressive failure of jointed rock slope. Nonferrous Metals (Mine Section) 58(2): 28–31.Google Scholar
  18. Cheng QG, Hu HT, Peng JB, et al (2000) Visco-elastoplastic finite element simulation of progressive failure of high-steep rock slope. Journal of Engineering Geology 8(1): 25–30.Google Scholar
  19. Li TL (2006) Elastic-Plastic Mechanics. Wuhan: China University of Geosciences Press. pp 33–37 (In Chinese)Google Scholar
  20. Cheng ZY (1992) Soil mechanics. Beijing: Tsinghua Univesity Press. pp 103–105 (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.Faculty of EngineeringChina University of GeosciencesWuhanChina

Personalised recommendations