›› 2003, Vol. 24 ›› Issue (6): 896-900.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

3D stability analysis of landslides based on strength reduction (I): Back analysis for the shear strength of slip soils

DENG Jian-hui, WEI Jin-bin, MIN Hong   

  1. Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2002-04-25 Online:2003-12-10 Published:2014-08-19

Abstract: The shear strength of slip soils is one of the prominent, but hard to be determined parameter in the stability analysis and control design of landslides, so 2-dimensional back analysis method is extensively used, which is based on the critical state assumption of slides. However, basically all the landslides are 3 dimensional in shape, and their major sliding direction changes drastically in some cases, thus making it necessary to develop a method for the 3D back analysis of slip soil strength and for the 3D stability analysis of the slide. A back analysis method, which is based on the strength reduction technique, is proposed. That is, the shear strength is obtained by gradually reducing the strength parameters to make the whole slip surface into plastic state (critical state). A case history, the No.1 landslide of Hongjiadu Hydroelectric Project, is examined by the method, with back-analyzed friction angle 4.1? lower than that from 2D analysis. 3D effect of the landslide is demonstrated and the method is thus proved feasible.

Key words: landslide, slip soil, shear strength, back analysis, strength reduction technique

CLC Number: 

  • TU 457
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
[1] 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.
[2] LI Shu-zhao, WANG Zhong-chang, JIA Xu, HE Lin-lin, . Simplified calculation method for cyclic bearing capacity of suction anchors with taut mooring in soft clay [J]. Rock and Soil Mechanics, 2019, 40(5): 1704-1712.
[3] ZHOU Xiao-wen, CHENG Li, ZHOU Mi, WANG Qi, . Behavior of ball penetration in clay in centrifuge testing [J]. Rock and Soil Mechanics, 2019, 40(5): 1713-1720.
[4] 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.
[5] FU Hong-yuan, LIU Jie, ZENG Ling, BIAN Han-bing, SHI Zhen-ning, . Deformation and strength tests of pre-disintegrating carbonaceous mudstone under loading and soaking condition [J]. Rock and Soil Mechanics, 2019, 40(4): 1273-1280.
[6] ZHENG Guo-feng, GUO Xiao-xia, SHAO Long-tan, . Experimental verification of an unsaturated shear strength criterion based on the state surface expression [J]. Rock and Soil Mechanics, 2019, 40(4): 1441-1448.
[7] ZHANG Jing-ke, SHAN Ting-ting, WANG Yu-chao, WANG Nan, FAN Meng, ZHAO Lin-yi, . Mechanical properties of soil-grout interface of anchor system in earthen sites [J]. Rock and Soil Mechanics, 2019, 40(3): 903-912.
[8] JIANG Qiang-qiang, LIU Lu-lu, JIAO Yu-yong, WANG Hao, . Strength properties and microstructure characteristics of slip zone soil subjected to wetting-drying cycles [J]. Rock and Soil Mechanics, 2019, 40(3): 1005-1012.
[9] QIU Min, YUAN Qing, LI Chang-jun, XIAO Chao-chao, . Comparative study of calculation methods for undrained shear strength of clay based on cavity expansion theory [J]. Rock and Soil Mechanics, 2019, 40(3): 1059-1066.
[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] LIU Yong, FENG Shuai, QIN Zhi-meng. Similarity evaluation method of landslide monitoring points based on motion-angle-difference [J]. Rock and Soil Mechanics, 2019, 40(1): 288-296.
[12] JING Lu, KWOK Chung-yee, ZHAO Tao, . Understanding dynamics of submarine landslide with coupled CFD-DEM [J]. Rock and Soil Mechanics, 2019, 40(1): 388-394.
[13] FAN Ning, NIAN Ting-kai, JIAO Hou-bin, ZHENG De-feng, . Effect and mechanism of disaster reduction of pipelines with double-elliptic streamline contour against impact of submarine landslides [J]. Rock and Soil Mechanics, 2019, 40(1): 413-420.
[14] CHEN Xi, ZENG Ya-wu, SUN Han-qing, REN Shu-lin, LIU Wei. A new peak shear strength model of rock joints [J]. Rock and Soil Mechanics, 2018, 39(S2): 123-130.
[15] MA Xian-chun, LUO Gang, DENG Jian-hui, SHANGGUAN Li, . Study of anchorage depth of anti-sliding piles for steep-sliding accumulation landslides [J]. Rock and Soil Mechanics, 2018, 39(S2): 157-168.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] ZHANG Guang-ming, LIU He, ZHANG Jin, WU Heng-an, WANG Xiu-xi. Mathematical model and nonlinear finite element equation for reservoir fluid-solid coupling[J]. , 2010, 31(5): 1657 -1662 .
[2] LIN Hang,CAO Ping,LI Jiang-teng,JIANG Xue-liang,HE Zhong-ming. Deformation stability of three-dimensional slope based on Hoek-Brown criterion[J]. , 2010, 31(11): 3656 -3660 .
[3] NIU Wen-jie,YE Wei-min,LIU Shao-gang,YU Hai-tao. Limit analysis of a soil slope considering saturated-unsaturated seepage[J]. , 2009, 30(8): 2477 -2482 .
[4] LIN Da-ming1,2,SHANG Yan-jun1,SUN Fu-jun3,SUN Yuan-chun1,2,WU Feng-bo1,2,LIU Zhi. Study of strength assessment of rock mass and application[J]. , 2011, 32(3): 837 -842 .
[5] DENG Dong-ping,LI Liang,ZHAO Lian-heng. A new method of sliding surface searching for general stability of slope based on Janbu method[J]. , 2011, 32(3): 891 -898 .
[6] WU Jian,FENG Shao-kong,LI Hong-jie. Study of automatically extracting structural plane parameters from borehole images[J]. , 2011, 32(3): 951 -957 .
[7] JIN Xu-hao , LU Wen-bo , TIAN Yong , YAN Peng , CHEN Ming. Analysis of mechanisms of S wave generated in rock blasting process[J]. , 2011, 32(S2): 228 -232 .
[8] LI Tao ,ZHANG Zhi-hong ,TANG Bao-rong. Experimental study of retardant effect of clay barriers on contaminants in a confined disposal facility for dredged sediments from Taihu Lake[J]. , 2012, 33(4): 993 -998 .
[9] LI Jian-jun,SHAO Sheng-jun,YANG Fu-yin,YANG Chun-ming. Experimental research on impermeable characteristics of slurry cake in cutoff wall hole of coarse-grained soil[J]. , 2012, 33(4): 1087 -1093 .
[10] HU Zai-qiang, MA Su-qing, LI Hong-ru, ZHAO Kai, TIAN Yuan. Experimental study of nonlinear K-G model for unsaturated loess[J]. , 2012, 33(S1): 56 -60 .