| 隧道洞口施工对边坡稳定性影响的预测分析 |
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| 引用本文： | 毛旭.隧道洞口施工对边坡稳定性影响的预测分析[J].施工技术,2011,40(23). |
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| 作者姓名： | 毛旭 |
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| 作者单位： | 贵州高速公路开发总公司,贵州贵阳,550004 |
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| 摘 要： | 结合隧道洞口边坡的位移监测数据,采用有限元弹塑性位移反分析方法,对隧道洞口土层参数进行了反演;并采用洞口土层的反演结果,对隧道后续施工扰动对围岩变形的影响进行了预测分析,预测结果与后期现场监测数据基本吻合。隧道洞口施工对边坡的影响非常大,采用有限元反演、预测的数值计算方法,能够有效地对施工造成的变形破坏进行预测预报。
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| 关 键 词： | 隧道工程 边坡稳定性 位移 反分析 台阶法 模拟 |
Prediction Analysis of Slope Stability in Tunnel Portal Construction |
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| Mao Xu.Prediction Analysis of Slope Stability in Tunnel Portal Construction[J].Construction Technology,2011,40(23). |
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| Authors: | Mao Xu |
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| Affiliation: | Mao Xu(Guizhou Expressway Development Corporation,Guiyang,Guizhou 550004,China) |
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| Abstract: | Base on the measured slope displacement of the tunnel portal,the elastic-plastic back analysis method is used to get the parameters of the surrounding rock.The parameters back-calculated used to predict the influence of construction on surrounding rock deformation.Research results show that the numerical result agrees with the measured values well.Tunnel portal construction have a great influence on the slope stability,the deformation can be simulated reasonably by back analysis FEM. |
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| Keywords: | tunnels slope stability displacement back analysis bench method simulation |
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