邱家焉隧道进口滑坡稳定性分析  

Qiujiayan Landslide Stability Analysis

作　　者：张丽萍[1] 李毅 

机构地区：[1]陕西交通职业技术学院,西安710018 [2]陕西鑫源岩土环境工程有限公司,西安710054

出　　处：《科学技术与工程》2012年第10期2347-2349,2353,共4页Science Technology and Engineering

基　　金：国家自然科学基金(40772181)资助

摘　　要：对邱家焉隧道进口的滑坡体通过工程地质勘察后表明,该滑坡处于极限平衡状态。采用Bishop法参数反演和直快剪试验结果,分别用二维、三维极限平衡法和二维、三维有限元法,对该滑坡进行稳定性计算。结果表明:用三维有限元法计算稳定系数,参数选用小值平均值较为合理。二维有限元法及二维、三维极限平衡法计算稳定系数参数选用反演值较为合理。其他方法及参数取值计算所得的稳定系数均小于1,说明该滑坡已产生滑动,结果不合理。最后根据三维有限元法的计算结果,考虑公路工程的安全系数,计算其剩余下滑推力,提出了采用抗滑桩支挡的处理措施。Imports of Qiujiayan tunnel landslide by engineering geological investigation reveals that the decline in the limit equilibrium state. Bishop method parameter retrieval using fast and direct shear test results. Respective- ly, two-dimensional, three-dimensional limit equilibrium method and two-dimensional, three-dimensional finite ele- ment method, the landslide stability calculation. The results show that： three-dimensional finite element method to calculate stability factor, the average parameter values more reasonable selection of small, two-dimensional finite element method and two-dimensional, three-dimensional limit equilibrium method to calculate the stability factor for inversion of values is more reasonable choice of parameters, other methods and parameters to take the calculated value of stability factor less than 1, indicating that the landslide has produced slide. The result is unreasonable. Fi- nally, according to three-dimensional finite element method of calculation, consider the highway safety factor to cal- culate the remaining fall thrust, made piles of retaining the use of measures to deal with.

关 键 词：滑坡 极限平衡法 有限元法 参数选取 

分 类 号：U417.2[交通运输工程—道路与铁道工程]