基于 FLAC 的边坡稳定性分析及治理措施研究

为解决某河道边坡稳定性问题，利用 Geostudio 软件对边坡进行极限平衡分析，同时采用 FLAC 进行数值模拟分析校核。在暴雨工况下边坡处于不稳定状态，最大位移量可达 100.0 mm，剪切应变增量最大值可达 4.45×10-2，shear-n 塑性区已经完全贯通，边坡体有整体滑动的趋势。提出双排抗滑桩设计方案进行加固后边坡稳定性系数较治理前得到了大幅度提高，加固后最大位移量只有 1.8 mm，边坡体最大应变增量值及剪切破坏塑性区的分布也得到了显著减少，边坡体达到稳定状态，设计方案合理可行，可为类似边坡治理工程提供参考。

Slope stability analysis and treatment measures based on FLAC

The slope stability issue of riverbank is addressed through limit equilibrium analysis using Geo-studio software and numerical simulation verification with FLAC. The results indicated that the slope was unstable during heavy rain conditions, with a maximum displacement of 100.0 mm and a maximum shear strain increment of 4.45x10-2. The shear-n plastic zone had been fully penetrated, and the slope landslide mass showed an overall sliding trend. Following reinforcement with double-row anti-slide piles, the stability coefficient of the slope significantly improves compared to its pre-treatment state. The maximum displacement after reinforcement is only 1.8 mm, and both the maximum strain increment value and distribution of shear failure plastic zone in the slope landslide are notably reduced, indicating that it has reached a stable state, This validates the reasonableness and feasibility of the design scheme, providing valuable reference for similar slope treatment projects.