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川藏公路田妥一怒江段某滑坡稳定性分析与整制

DOI: 10.3969/j.issn.1674-0696.2011.supp1.032, PP. 642-646

Keywords: 道路工程,稳定性分析,强度折减法,滑坡,有限元,安全系数,roadengineering,stabilityanalysis,strengthreductionmethod,landslide,finiteelement,safetycoeficient

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Abstract:

:?结合国道318线川藏公路田妥一怒江段K3668+700~K3668+790滑坡的基本状况,对滑坡的成因进行了分析。对K3668+715断面建立了有限元分析模型,利用有限元强度折减法,计算分析了该段滑坡在重力场和地震作用下的稳定性,计算分析求得该滑坡整治前在重力场和地震作用下的稳定安全系数分别为0.99和0.93,滑坡处于不稳定的滑动状态,应及时对该段滑坡进行整治。提出了合理的整治方案并进行了安全性评价,结果表明整治后滑坡的安全系数大于设计安全系。

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