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<p>With the continuous advancement of road construction, the issue of slope stability has become increasingly sensitive. This paper studies the stability of bedding slopes under rainfall infiltration and proposes a novel evaluation model for slope stability. Initially, an accurate discrete element model of bedding slopes was established based on laboratory experimental data. To simulate water migration within the slope, the slope was discretized, and the Richards equation was analytically solved and incorporated into the DEM for iterative calculations. This approach enabled a detailed simulation of the dynamic changes in bedding slopes under rainfall infiltration. The study systematically analyzed the instability and failure characteristics of slopes in terms of water content, rock strength, slope displacement, and fracture development. A mathematical model describing the relationship between rainfall duration, slope dip angle, and joint dip angle was developed to evaluate the safety factor of bedding slopes. This research expands the understanding of bedding slope stability under rainfall infiltration, and the proposed evaluation model offers practical guidance for engineering applications.</p>

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Stability Study of Rainfall Infiltration on Bedding Slope Based on Richard’s Equation

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Dunwen Liu,
  • Junzhe Tan,
  • Chengtao Yang

摘要

With the continuous advancement of road construction, the issue of slope stability has become increasingly sensitive. This paper studies the stability of bedding slopes under rainfall infiltration and proposes a novel evaluation model for slope stability. Initially, an accurate discrete element model of bedding slopes was established based on laboratory experimental data. To simulate water migration within the slope, the slope was discretized, and the Richards equation was analytically solved and incorporated into the DEM for iterative calculations. This approach enabled a detailed simulation of the dynamic changes in bedding slopes under rainfall infiltration. The study systematically analyzed the instability and failure characteristics of slopes in terms of water content, rock strength, slope displacement, and fracture development. A mathematical model describing the relationship between rainfall duration, slope dip angle, and joint dip angle was developed to evaluate the safety factor of bedding slopes. This research expands the understanding of bedding slope stability under rainfall infiltration, and the proposed evaluation model offers practical guidance for engineering applications.