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Bulletin of Engineering Geology and the Environment

, Volume 78, Issue 6, pp 4187–4200 | Cite as

Stability analysis of the Zhangmu multi-layer landslide using the vector sum method in Tibet, China

  • Mingwei GuoEmail author
  • Sujin Liu
  • Shunde Yin
  • Shuilin Wang
Original Paper
  • 228 Downloads

Abstract

The Zhangmu landslide is located on the China–Nepal border in Tibet, China, which has recently become a serious threat to the lives and properties of local people. In order to efficiently quantify the stability of the Zhangmu landslide, a new method named the vector sum method (VSM) is proposed. Differing from conventional slope-stability analysis methods, the VSM considers both the magnitude, the direction of force and the strength-reserving definition of the safety factor based on the actual stress field of slope achieved from finite element analysis. Moreover, the global sliding direction of potential landslides was theoretically deduced by the principle of minimum potential energy, while the safety factor can be directly computed by not only the force limit equilibrium of the whole sliding body in the global sliding direction but also the moment limit equilibrium at the moment center. Finally, stability analysis of the Zhangmu landslide was performed by the proposed method, and verified against the rigorous Morgenstern–Price method.

Keywords

Vector sum method Slope stability Limit equilibrium method Strength reduction method Zhangmu landslide 

Notes

Acknowledgements

This research was supported by the Regional Collaboration and Innovation Project between the Chinese Academy of Sciences and Tibet, titled the ‘Geologic exploration, risk assessment and comprehensive prevention and control of Zhangmu Landslide’, as well as by the general program from the National Natural Science Foundation of China (Grants no.51674239). We deeply appreciate their support for this research.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Mingwei Guo
    • 1
    Email author
  • Sujin Liu
    • 1
    • 2
  • Shunde Yin
    • 3
  • Shuilin Wang
    • 1
  1. 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhanChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Department of Civil and Environmental EngineeringUniversity of WaterlooWaterlooCanada

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