This analysis reveals slope failure in open-pit mining with varying groundwater levels, suggesting implications for stability management.
Groundwater significantly influences slope stability by increasing pore water pressure and reducing the mechanical strength of rock and soil masses. To ensure the safety of open‐pit mining operations, it is crucial to understand the mechanisms by which groundwater affects slope failure. This study aims to evaluate the stability of waste dump slopes under groundwater seepage conditions through analytical, numerical, and field‐based approaches. An analytical solution for the slope safety factor considering seepage effects along a circular arc failure surface was derived using the Swedish circular arc method. The influence of groundwater level variations on the safety factor was quantitatively analyzed. Furthermore, comprehensive numerical modeling and in situ monitoring were conducted to validate the analytical results and reveal the deformation characteristics under different groundwater levels. The derived analytical model demonstrates that the slope safety factor is governed by groundwater level, slope geometry, potential failure surfaces, and interactions within the internal waste dump. Under rising groundwater conditions, slope displacement increases, with the steepest slope sections exhibiting maximum plastic strain.
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B Liu (2025) studied this question.
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