基于FLAC的边坡稳定性分析及治理措施研究
Slope stability analysis and treatment measures based on FLAC
龚郴彬 1张家柱 2代世军2
作者信息
- 1. 安徽省·水利部淮河水利委员会水利科学研究院,安徽 合肥 230088;安徽省建筑工程质量监督检测站有限公司,安徽合肥 230088
- 2. 安徽省·水利部淮河水利委员会水利科学研究院,安徽 合肥 230088
- 折叠
摘要
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.
Abstract
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 reason-ableness and feasibility of the design scheme,providing valuable reference for similar slope treatment projects.
关键词
边坡稳定性分析/极限平衡法/FLAC数值模拟/抗滑桩Key words
slope stability analysis/limit equilibrium method/FLAC numerical simulation/anti-slide pile引用本文复制引用
基金项目
安徽省·水利部淮河水利委员会水利科学研究院青年创新计划(KY202305)
出版年
2024
国家科技期刊平台
NSTL
万方数据