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Analysis of Soil Slope Stability under Underground Coal Seam Mining Using Improved Radial Movement Optimization with Lévy Flight

Author

Listed:
  • Haotian Li

    (Department of Civil Engineering, Central South University, Changsha 410075, China)

  • Liangxing Jin

    (Department of Civil Engineering, Central South University, Changsha 410075, China)

  • Pingting Liu

    (Department of Civil Engineering, Central South University, Changsha 410075, China)

Abstract

Underground coal seam mining significantly reduces the stability of slopes, especially soil slopes, and an accurate evaluation of the stability of soil slopes under underground mining conditions is crucial for mining safety. In this study, the impact of coal seam mining is considered as the additional horizontal and vertical stresses acting on the slope, and an equation for calculating the safety factor of soil slopes under underground mining conditions is derived based on the rigorous Janbu method. Then, the Improved Radial Movement Optimization (IRMO) algorithm is introduced and combined with Lévy flight optimization to conduct global optimization searches, obtaining the critical sliding surface and corresponding safety factor of the soil slope under underground coal seam mining. Through comparisons with the numerical simulation results in three different case studies, the feasibility of applying the IRMO algorithm with Lévy flight to analyze the stability of soil slopes under underground mining is demonstrated. This ensures the accuracy and stability of the calculation results while maintaining a high convergence efficiency. Furthermore, the effects of the mining thickness and mining direction on slope stability are analyzed, and the results indicate that a smaller mining thickness and mining along the slope are advantageous for slope stability. The method proposed in this study provides valuable insights for preventing the slope instability hazards caused by underground coal seam mining.

Suggested Citation

  • Haotian Li & Liangxing Jin & Pingting Liu, 2024. "Analysis of Soil Slope Stability under Underground Coal Seam Mining Using Improved Radial Movement Optimization with Lévy Flight," Mathematics, MDPI, vol. 12(10), pages 1-23, May.
    • Handle: RePEc:gam:jmathe:v:12:y:2024:i:10:p:1566-:d:1396812
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    References listed on IDEAS

    as
    1. Bingchao Zhao & Yaxin Guo & Wei Wang & Shenglin He, 2023. "Impact of Underground Coal Seam Mining on Stability and Slippage of the Loess Slope," Sustainability, MDPI, vol. 15(8), pages 1-19, April.
    2. Xue-yang Sun & Chun-Hsing Ho & Cheng Li & Yucheng Xia & Qi Zhang, 2020. "Inclination effect of coal mine strata on the stability of loess land slope under the condition of underground mining," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 104(1), pages 833-852, October.
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