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Stability Analysis of Slope Considering the Energy Evolution of Locked Segment

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Abstract

Researches on the energy evolution of the key blocks is helpful to reveal the failure process of locked-segment type slope, whose stability is governed by the locked segment along the potential slip surface. In order to study the failure mechanism of the locked segment in the process of slope progressive failure due to strength attenuation, a series of stability analysis on the numerical models of locked-segment type slope were implemented to record the relationship curve between energy and strength reduction coefficient. Then, according to the variation law and characteristic of energy evolution, the failure process of the locked segment was divided into four stages: elastic stage, initial damage stage, extensive damage stage and failure stage. And the reduction coefficient corresponding to the peak of the energy evolution curve was employed to achieve landslide warning. In addition, the method to determine the safety factor of locked-segment type slope was given, and its reliability was verified by comparing with other traditional methods. Finally, the formula for calculating the initial sliding velocity was presented based on the residual strain energy which is defined as the elastic strain energy of the locked segment when the slope is unstable.

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Data availability

The data used to support the findings of this study are available from the corresponding author upon request.

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Acknowledgements

This paper gets its funding from projects (51774322) supported by National Natural Science Foundation of China; Project (2018JJ2500) supported by Hunan Provincial Natural Science Foundation of China. The authors wish to acknowledge these supports.

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Authors and Affiliations

  1. School of Resource and Safety Engineering, Central South University, Changsha, 410083, Hunan, China

    Xiangjie Yin, Hang Lin, Yifan Chen & Yi Tang

  2. China School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China

    Yixian Wang

  3. School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China

    Yanlin Zhao

  4. Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co., Ltd, Kunming, 650051, Yunan, China

    Weixun Yong

Authors
  1. Xiangjie Yin
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  2. Hang Lin
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  5. Yixian Wang
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  6. Yanlin Zhao
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Correspondence to Hang Lin or Yifan Chen.

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Yin, X., Lin, H., Chen, Y. et al. Stability Analysis of Slope Considering the Energy Evolution of Locked Segment. Geotech Geol Eng 40, 1729–1738 (2022). https://doi.org/10.1007/s10706-021-01989-4

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  • DOI: https://doi.org/10.1007/s10706-021-01989-4

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