›› 2010, Vol. 31 ›› Issue (3): 971-975.

• Numerical Analysis • Previous Articles     Next Articles

Point safety factor method for stability analysis of landslide

YANG Tao1，ZHOU De-pei1，MA Hui-min2，ZHANG Zhong-ping2   

  1. 1. Department of Geotechnical Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Northwest Research Institute of Co., Ltd. of C. R. E. C., Lanzhou 730000, China
  • Received:2008-10-06 Online:2010-03-10 Published:2010-03-31

PDF (Chinese)

3268

Abstract:

A 3-D model for numerical calculation of landslide is proposed; and a high-precision eight-node hexahedron element is used to build the finite element grid of slip layer. The slip layer material is simulated by an ideal elastoplastic model based on the Mohr-Coulomb criterion. Three-dimensional stress state and slide direction of the slip layer zone are obtained by numerical computation. So based on the analysis of the three-dimensional stress state of the slip layer zone, a point safety factor as the ratio of the shear strength of the slip zone to the shear stress parallel to the gliding direction is defined; and the safety factor of the landslide as the weighted average value of the zone point safety factor with its zone is defined. The sliding mechanism is studied through zone point safety factor; and landslide stability can be evaluated through the safety factor. The case studies show that the calculated results are consistent with the actual cases.

Key words: landslide, sliding mechanism, point safety factor, numerical computation

CLC Number: 

  • O 29
[1] CHEN He, ZHANG Yu-fang, ZHANG Xin-min, WEI Shao-wei, . Full-scale model experiments on anti-sliding characteristics of high-pressure grouting steel-tube micropiles [J]. Rock and Soil Mechanics, 2020, 41(2): 428-436.
[2] YU Yi-fan, WANG Ping, WANG Hui-juan, XU Shu-ya, GUO Hai-tao, . Physical model test of seismic dynamic response to accumulative landslide [J]. Rock and Soil Mechanics, 2019, 40(S1): 172-180.
[3] YAN Guo-qiang, YIN Yue-ping, HUANG Bo-lin, ZHANG Zhi-hua, DAI Zhen-wei, . Formation mechanism and deformation characteristics of Jinjiling landslide in Wushan, Three Gorges Reservoir region [J]. Rock and Soil Mechanics, 2019, 40(S1): 329-340.
[4] HUANG Xiao-hu, LEI De-xin, XIA Jun-bao, YI Wu, ZHANG Peng, . Forecast analysis and application of stepwise deformation of landslide induced by rainfall [J]. Rock and Soil Mechanics, 2019, 40(9): 3585-3592.
[5] DENG Mao-lin, YI Qing-lin, HAN Bei, ZHOU Jian, LI Zhuo-jun, ZHANG Fu-ling, . Analysis of surface deformation law of Muyubao landslide in Three Gorges reservoir area [J]. Rock and Soil Mechanics, 2019, 40(8): 3145-3152.
[6] YUGuo, XIE Mo-wen, HU Qing-zhong, JIN Yu-peng, . A method for calculating the three-dimensional landslide speed of reservoir bank based on GIS [J]. Rock and Soil Mechanics, 2019, 40(7): 2781-2788.
[7] ZHAO Jiu-bin, LIU Yuan-xue, LIU Na, HU Ming, . Spatial prediction method of regional landslide based on distributed bp neural network algorithm under massive monitoring data [J]. Rock and Soil Mechanics, 2019, 40(7): 2866-2872.
[8] WANG Xiang-nan, LI Quan-ming, YU Yu-zhen, YU Jia-lin, LÜ He, . Simulation of the failure process of landslides based on extended finite element method [J]. Rock and Soil Mechanics, 2019, 40(6): 2435-2442.
[9] YANG Zong-ji, CAI Huan, LEI Xiao-qin, WANG Li-yong, DING Peng-peng, QIAO Jian-ping, . Experiment on hydro-mechanical behavior of unsaturated gravelly soil slope [J]. Rock and Soil Mechanics, 2019, 40(5): 1869-1880.
[10] PEI Xiang-jun, ZHU Ling, CUI Sheng-hua, ZHANG Xiao-chao, LIANG Yu-fei, GAO Hui-hui, ZHANG Zi-dong. Liquefaction characteristics of interlayer dislocation zone of Daguangbao landslide and its start-up cause [J]. Rock and Soil Mechanics, 2019, 40(3): 1085-1096.
[11] ZHANG Long-fei, WU Yi-ping, MIAO Fa-sheng, LI Lin-wei, KANG Tian. Mechanical model and stability analysis of progressive failure for thrust-type gently inclined shallow landslide [J]. Rock and Soil Mechanics, 2019, 40(12): 4767-4776.
[12] JIANG Qiang-qiang, JIAO Yu-yong, SONG Liang, WANG Hao, XIE Bi-ting, . Experimental study on reservoir landslide under rainfall and water-level fluctuation [J]. Rock and Soil Mechanics, 2019, 40(11): 4361-4370.
[13] ZHOU Wen-jiao, WEI Shao-wei, ZHANG Yu-fang, . Model test study on anti-sliding performance of multiple segment grouting steel-tube [J]. Rock and Soil Mechanics, 2019, 40(11): 4412-4420.
[14] LIU Yong, HU Bao-dan, CHEN Zhe. A similarity measurement method for multiple information data of landslide [J]. Rock and Soil Mechanics, 2019, 40(10): 4001-4010.
[15] HUANG Jian, YAO Yang-ping. A practical model for predicting the failure time of high fill slope [J]. Rock and Soil Mechanics, 2019, 40(10): 4057-4064.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WEI Li，CHAI Shou-xi，CAI Hong-zhou，WANG Xiao-yan，LI Min3，SHI Qian. Research on tensility of wheat straw for reinforced material[J]. , 2010, 31(1): 128 -132 .
[2] . Numerical implementation of discontinuities in dual media 3D model for thermo-hydro-mechanical coupling[J]. , 2010, 31(2): 638 -644 .
[3] SUN De-an，CHEN Bo. Mechanical behavior of remolded overconsolidated Shanghai soft clay and its elastoplastic simulation[J]. , 2010, 31(6): 1739 -1743 .
[4] WANG Yang, TANG Xiong-jun, TAN Xian-kun, WANG Yuan-han. Mechanism analysis of floor heave in Yunling Tunnel[J]. , 2010, 31(8): 2530 -2534 .
[5] LEI Jin-bo，CHEN Cong-xin. Research on load transfer mechanism of composite foundation of rigid pile with cap based on hyperbolic model[J]. , 2010, 31(11): 3385 -3391 .
[6] WANG Deng-ke，LIU Jian，YIN Guang-zhi，WEI Li-de. Research on influencing factors of permeability change for outburst-prone coal[J]. , 2010, 31(11): 3469 -3474 .
[7] ZHANG Cheng-ping，ZHANG Ding-li，LUO Jian-jun，WANG Meng-shu，WU Jie-pu. Remote monitoring system applied to the construction of metro station undercrossing existing metro tunnel[J]. , 2009, 30(6): 1861 -1866 .
[8] WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke. Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration[J]. , 2009, 30(7): 2158 -2162 .
[9] ZHANG Yuan, WAN Zhi-jun, KANG Jian-rong, ZHAO Yang-sheng. Analysis of stage characteristics of sandstone permeability under conditions of temperature and triaxial stress[J]. , 2011, 32(3): 677 -683 .
[10] HOU Wei2, JIA Yong-gang1,2, SONG Jing-tai3, MENG Xiang-mei4, SHAN Hong-xian1, 2. Factors influencing critical shear stress of silty sediment seabed in Yellow River delta[J]. , 2011, 32(S1): 376 -0381 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd