| 陈正东,李正忠,赖勇.基于三维数值模拟的含软弱夹层顺层岩质边坡开挖稳定性研究[J].矿产勘查,2020,11(2):395-402 |
| 基于三维数值模拟的含软弱夹层顺层岩质边坡开挖稳定性研究 |
| Stability of bedding rock slope under excavation based on three-dimensional numerical simulation |
| 投稿时间：2019-01-23 |
| DOI： |
| 中文关键词: 地质灾害 滑坡 三维数值分析 开挖稳定性 顺层岩质边坡 软弱夹层 |
| 英文关键词: geological disaster,landslide,three-dimensional numerical simulation,stability of excavation,bedding rock slope,weak interlayer |
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| 中文摘要: |
| 在地形、岩体组构、风化及开挖卸荷等作用下,某含软弱夹层顺层岩质建筑边坡已明显变形,继续开挖后可能出现大变形问题。通过开挖过程中边坡变形破坏特征及岩土体物理力学参数统计分析,基于FLAC3D软件,建立了边坡三维计算模型；计算分析了边坡开挖后的位移变形特征,评价了开挖后边坡的稳定性。结果表明,边坡开挖后软弱夹层上部岩土体变形较大,可能产生沿该软弱夹层的剪切滑移破坏,与现场监测数据基本吻合,可为顺层岩质边坡稳定性计算评价及优化同类型边坡开挖支护设计提供理论依据。 |
| 英文摘要: |
| The deformation of the slope has occurred under the action of terrain,rock structure,weathered and excavation unloading. Based on the software FLAC3D,calculation model for bedding rock slope excavation are established by the statistics and analysising on deformation character and the mechanical characteristics of bedding rock slope. Stability of bedding rock slope under excavation can be evaluated with calculating and analysising on displacement deformation characteristics. The calculation results show that the rock soil mass above weak interlayer has large deformation influenced by slope excavation and interlayer shearing slip failure along the weak interlayer may occur,which is coincident with the data of field monitoring. It can provide the theoretical foundation to assess the calculation of bedding rock slope stability and to optimize the support design of the same type slope excavation. |
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