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Volume 46 Issue 11
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LU Kunlin, MEI Yifan, WANG Linfei, JIA Senlin, QIN Tao, ZHU Dayong. Three-dimensional limit equilibrium method for rock slopes by constructing normal stress distribution over sliding surface and its application[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(11): 2265-2274. DOI: 10.11779/CJGE20230753
Citation: LU Kunlin, MEI Yifan, WANG Linfei, JIA Senlin, QIN Tao, ZHU Dayong. Three-dimensional limit equilibrium method for rock slopes by constructing normal stress distribution over sliding surface and its application[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(11): 2265-2274. DOI: 10.11779/CJGE20230753
shu

Three-dimensional limit equilibrium method for rock slopes by constructing normal stress distribution over sliding surface and its application

  • 1.

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

  • 2.

    State Key Laboratory of Safety and Health for Metal Mines, Sinosteel Ma'anshan Institute of Mining Research Co., Ltd., Ma'anshan 243000, China

  • 3.

    School of Civil Engineering and Architecture, NingboTech University, Ningbo 315100, China

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  • Received Date: August 06, 2023
  • Available Online: March 24, 2024
    Graphical Abstract
    • Abstract
  • The researches on the three-dimensional stability of rock slopes are of important theoretical significance and engineering application prospect. The conventional equivalent Mohr-Coulomb strength parameters used to analyze the stability of rock slopes cannot accurately reflect the nonlinear distribution of strength envelope of rock mass, resulting in conservative results. A point-by-point equivalent Mohr-Coulomb strength parameter is proposed to replace the conventional equivalent Mohr-Coulomb strength parameters. By constructing the normal stress distribution over the sliding surface, the equivalent cohesion and internal friction angle of the sliding surface change point-by-point with the normal stress distribution over the sliding surface. On this basis, a three-dimensional stability analysis method for rock slopes is proposed by combining the point-by-point equivalent Mohr-Coulomb strength parameter and the limit equilibrium method based on constructing the normal stress distribution over the sliding surface. Some examples show that the proposed method is correct and suitable for any spatial sliding surface shape. Compared with the conventional equivalent Mohr-Coulomb strength parameters, the stability coefficient obtained by the proposed method is lower. The method has successfully applied to a practical project and achieved good results. The results are reliable, and the calculation process is simple and easy to program, which can provide a theoretical reference for the stability evaluation of rock slope engineering.
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    • References (22)
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