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Research on 3D stability algorithm of spatial concave slope.

Li Yin1, Dong Wang2, Xiaoyu Xing2

  • 1Liaoning Technical University, Fuxin, 123000, China. azhuang_001@163.com.

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Summary
This summary is machine-generated.

This study analyzes concave slope stability in open-pit mining using numerical simulations. It reveals an ellipsoidal landslide surface and an exponential relationship between stability and curvature radius.

Keywords:
Equivalent strength parameterPlane SagSlopeSurface mineThree-dimensional stability

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Area of Science:

  • Mining Engineering
  • Geotechnical Engineering
  • Rock Mechanics

Background:

  • Concave slopes in open-pit mines are critical structures requiring stability assessment.
  • Instability mechanisms of heterogeneous concave slopes are complex and require advanced analysis.

Purpose of the Study:

  • To investigate the instability mechanisms of three-dimensional concave slopes in open-pit mining.
  • To develop a novel analytical method for calculating the stability coefficient of concave slopes.

Main Methods:

  • Numerical simulation of a concave slope at Nanfen Open-Pit Iron Mine.
  • Formulation of a spatial equation for potential sliding surfaces.
  • Segmentation of sliding surfaces and stress analysis using constitutive relationships and equilibrium equations.
  • Application of the rigid body limit equilibrium technique.

Main Results:

  • Identified potential landslide surfaces on concave slopes as ellipsoidal.
  • Established an exponential correlation between the three-dimensional stability coefficient and the radius of curvature.
  • Demonstrated that increasing curvature radius leads to a gradual decrease in the stability coefficient.

Conclusions:

  • The study provides a dependable theoretical approach for assessing the three-dimensional stability of concave slopes.
  • The developed method accounts for three-dimensional effects in heterogeneous slope stability analysis.
  • Findings are crucial for enhancing safety and efficiency in open-pit mining operations.