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<p>Soil in slope engineering is a granular material, so it is more advantageous to study the movement of particles during slope instability by discrete element method. A three-dimensional discrete element numerical model for gravelly soil slopes was established, and a new energy-based criterion was introduced to define slope failure in this paper. The slope stability was assessed according to the principle of strength reduction method, and the slope safety factor was determined based on the energy criterion. The results show that there was a significant inflection point in the evolution of kinetic energy, elastic strain energy, and dissipation energy with strength reduction factor, and the corresponding strength reduction factor is the slope safety factor. The slope safety factor determined based on the energy criterion was 1.4, which is consistent with that obtained by the change in particle displacement and theoretical equation, verifying the correctness of the slope safety factor determined by the energy criterion in this paper. The research work in this paper provides a novel approach for the stability analysis of slopes.</p>

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Stability analysis of a gravelly soil slope based on energy criterion and discrete element strength reduction method

  • 期刊论文

  • 发表日期：

    2025年7月20日

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  • Yuqi Li,
  • Yiwei Ding,
  • Yu Fang,
  • Danda Shi,
  • Qing Xie

摘要

Soil in slope engineering is a granular material, so it is more advantageous to study the movement of particles during slope instability by discrete element method. A three-dimensional discrete element numerical model for gravelly soil slopes was established, and a new energy-based criterion was introduced to define slope failure in this paper. The slope stability was assessed according to the principle of strength reduction method, and the slope safety factor was determined based on the energy criterion. The results show that there was a significant inflection point in the evolution of kinetic energy, elastic strain energy, and dissipation energy with strength reduction factor, and the corresponding strength reduction factor is the slope safety factor. The slope safety factor determined based on the energy criterion was 1.4, which is consistent with that obtained by the change in particle displacement and theoretical equation, verifying the correctness of the slope safety factor determined by the energy criterion in this paper. The research work in this paper provides a novel approach for the stability analysis of slopes.