Back Analysis of Anti-slide Strength Parameters of Slope Stability Based on Limit Equilibrium Theory

DENG Dong-ping; LI Liang; ZHAO Lian-heng

doi:10.11988/ckyyb.20151127

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Journal of Changjiang River Scientific Research Institute ›› 2017, Vol. 34 ›› Issue (3) : 67-73. DOI: 10.11988/ckyyb.20151127

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Back Analysis of Anti-slide Strength Parameters of Slope Stability Based on Limit Equilibrium Theory

DENG Dong-ping, LI Liang, ZHAO Lian-heng

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Abstract

The values of anti-slide strength parameters have important influence on the calculation of slope stability, and back analysis is an effective method to obtain the anti-slide strength parameters quickly and accurately. In this article, two specific equations for anti-slide strength parameters and factor of safety are established based on the results of slope stability analysis and the relationship between anti-slide strength parameters and the corresponding critical slip surface. Thus the results of back analysis can be obtained when the factor of safety or a strength parameter is known for the given critical slip surface. For the sake of convenient calculation, the explicit expressions for back analysis of parameters are deduced by adopting the limit equilibrium Swedish method to analyze slope stability in consideration of a variety of factors. Furthermore, the critical slip surface is assumed to be circular and is determined by survey methods. Through comparison with some examples, the correctness of this method is verified. Moreover, researches on the parameter analysis show that the larger spacing of monitoring sites on critical slip surface, the smaller effect of position error of monitoring sites on the inversion result. Application of the present method to engineering example illustrates its practicability.

Key words

critical slip surface / factor of safety / slope stability / strength parameters / back analysis / limit equilibrium

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DENG Dong-ping, LI Liang, ZHAO Lian-heng. Back Analysis of Anti-slide Strength Parameters of Slope Stability Based on Limit Equilibrium Theory[J]. Journal of Changjiang River Scientific Research Institute. 2017, 34(3): 67-73 https://doi.org/10.11988/ckyyb.20151127

References

[1] KOJIMA H, OBAYASHI S. An Inverse Analysis of Unobserved Trigger Factor for Slope Stability Evaluation[J]. Computers and Geosciences, 2006, 32(8): 1069-1078.
[2] 石崇,张玉,孙怀昆,等. 争岗滑坡堆积体滑面强度参数反演分析[J]. 岩石力学与工程学报,2010,29(增2):3728-3734.
[3] ZHANG J, TANG W H, ZHANG L M. Efficient Probabilistic Back-analysis of Slope Stability Model Parameters[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2010, 136(1): 99-109.
[4]黄华坚,陈建康,王东,等. 强度参数对土坡稳定可靠度指标的影响分析[J]. 长江科学院院报,2009,26(4):27-30.
[5] CHANDLER R J. Back Analysis Techniques for Slope Stabilization Works: A Case Record[J]. Geotechnique, 1977, 27(4): 479-495.
[6] DESCHAMPS R, YANKEY G. Limitations in the Back-analysis of Strength from Failures[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2006, 132(4): 532-536.
[7]PIERNICOLA L, DANIELE G, PAOLO A. The Montaguto Earthflow: A Back-analysis of the Process of Landslide Propagation[J]. Engineering Geology, 2014, 170(20): 66-79.
[8] GILBERT R B, WRIGHT S G, LIEDTKE E. Uncertainty in Back Analysis of Slopes: Kettleman Hills Case History[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124(12): 1167-1176.
[9] 周时,黄宜胜,胡耀普,等. 玛尔挡水电站边坡岩体宏观力学参数优化反演及应用[J]. 长江科学院院报,2014,31 (7):49-52.
[10]OKUI Y, TOKUNAGA A, SHINJI M, et al. New Back Analysis Method of Slope Stability by Using Field Measurements[J]. International Journal of Rock Mechanics and Mining Sciences, 1997, 34(3): 234-249.
[11]ZHANG L L, ZHANG J, ZHANG L M, et al. Back Analysis of Slope Failure with Markov Chain Monte Carlo Simulation[J]. Computers and Geotechnics, 2010, 37(7): 905-912.
[12]WANG L, HWANG J H, LUO Z, et al. Probabilistic Back Analysis of Slope Failure: A Case Study in Taiwan[J]. Computers and Geotechnics, 2013, 51(6): 12-23.
[13]ZHANG J, ZHANG L M, TANG W H. Slope Reliability Analysis Considering Site-specific Performance Information[J]. Journal Geotechnical Geoenvironmental Engineering, 2011, 137(3): 227-238.
[14]SUN Z B, ZHANG D B. Back Analysis for Soil Slope Based on Measuring Inclination Data[J]. Journal of Central South University (English Edition), 2012, 19(11): 3291-3297.
[15]JIANG J C, TAKUO Y. Charts for Estimating Strength Parameters from Slips in Homogeneous Slopes[J]. Computers and Geotechnics, 2006, 33(6): 294-304.
[16]JIANG J C, TAKUO Y. A New Back Analysis of Strength Parameters from Single Slips[J]. Computers and Geotechnics, 2008, 35(2): 286-291.
[17]邓东平,李亮,赵炼恒. 基于Janbu法的边坡整体稳定性滑动面搜索新方法[J]. 岩土力学,2011,32(3):891-898.
[18]邓东平,李亮. 基于滑动面搜索新方法对地震作用下边坡稳定性拟静力分析[J]. 岩石力学与工程学报,2012,31(1): 86-98.
[19]邓东平,李亮. 水力条件下具有张裂缝临河边坡稳定性分析[J]. 岩石力学与工程学报,2011,30(9):1835-1847.