The behavior of a slope reinforced by passive piles 15 years ago was studied during removal of some passive piles, additional steeper slope cutting, and reinforcement by soil nails and anchors. Through a comparison of the measured value and numerical analysis results, it was found that the maximum lateral displacement developed at bench No. 4, which was the nearest bench to the additional steep slope cutting, and it could be correlated with the groundwater table. In particular, the relaxation of the ground from past failure sliding could affect the slope stability.

中文翻译：

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加固翻新的斜坡，防止在下部进行更陡峭的切割

15年前对被动桩加固的边坡的性能进行了研究，包括拆除一些被动桩，进一步陡峭的边坡切割以及土钉和锚固加固。通过对测量值和数值分析结果的比较，发现最大的横向位移出现在第4阶，这是最接近额外陡坡切割的阶，并且可以与地下水位相关。尤其是过去的破坏滑动导致的地面松弛会影响边坡的稳定性。