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| 岩质高边坡加固时机研究 |
| Study on Reinforcement Time of Rock High Slope |
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| DOI：10.3969/j.issn.1671-5322.2012.03.003 |
| 中文关键词: 边坡稳定性 FLAC^3D 有限元法 锚杆支护 加固时机 |
| 英文关键词: stability of slope FLAC3D finite anchored structure reinforcement time |
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| 中文摘要: |
| 为了研究某高速公路岩质边坡的稳定性及防治措施，利用FLAC^3D有限差分软件建立岩质边坡数值计算模型，分析开挖过程中岩土体的变形情况；根据变形破坏模式提出岩质边坡加固方法尤其是加固时机的优化方案。研究结果表明：如果边坡采用一挖到底的开挖方式，随着边坡开挖强度不断增大，将出现明显的变形滑动面，最终会导致开挖边坡失稳；而对边坡进行适时锚固支护，岩土体的强度将明显提高，变形位移明显减小，保证了边坡在开挖过程中以及开挖后的长期稳定性。 |
| 英文摘要: |
| In order to study the stability of stratified rock slope in the road and its prevention measures,the numerical calculation model for rock slope was founded with FLAC3D finite difference software.The deformation of rock mass was analyzed in the excavation procedure,and the optimization scheme of reinforcement method and especially the reinforcement time was proposed according to the deformation failure mode of rock slope.The research result indicates that if method of excavation to the end is used,obvious deformation sliding surface will appear with excavation strength of slope increasing constantly,and will finally cause instability of excavation slope.However,when anchored structure to the slope was duly done,strength of rock and soil mass would be improved and deformation displacement be decreased obviously.This ensures the long-term stability of slope in the course of excavation and after the excavation. |
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