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Qiujiayan Landslide Stability Analysis

ZHANG Li-ping1,LI Yi2 (Shaanxi college of Communication Technology1,Xi'an 710018,P.R.China; Geotechnical Environmental Engineering Co.,Ltd.Shaanxi Xinyuan2,Xi'an 710054,P.R.China)  
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.Respectively,two-dimensional,three-dimensional limit equilibrium method and two-dimensional,three-dimensional finite element 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.Finally,according to three-dimensional finite element method of calculation,consider the highway safety factor to calculate the remaining fall thrust,made piles of retaining the use of measures to deal with.
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