›› 2013, Vol. 34 ›› Issue (S1): 252-258.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis of formation mechanism and three-dimensional stability of large scale terrace of earthquake landslide

DONG Jin-yu1，WANG Dong2，YANG Ji-hong1，HUANG Zhi-quan1   

  1. 1. College of Resources and Environment, North China University of Water Resources and Electric Power, Zhengzhou 450011, China; 2. College of Civil Engineering, Shijiazhuang Tiedao University , Shijiazhuang 050043, China
  • Received:2013-05-10 Online:2013-08-30 Published:2014-06-09

PDF (Chinese)

1618

Abstract: Through in-situ investigation, the terrace model of Duba river is generalized. According to the geomorphic characteristics and hydrogeological investigation, Chenjiaba seismically induced landslide is located on the terrace the river; sliding surface is formed by long-term immersion of groundwater. Geological structures of sliding mass and the residua on terrace as well as the attitude of bedrock exposed at the front and posterior margin of the landslide are compared respectively; so failure mode of this landslide is determined; while the severe earthquake occurred, silty clay of the sliding surface are weakened by groundwater, which resulted in the sliding of unconsolidated accumulative formation on the terrace. The finite-difference and strength-reduction method is adopted to compute its stability factors under natural, rainstorm, seismic conditions. And three dimensional shapes of potential unstable body under different conditions are put forward.

Key words: earthquake landslide, formation mechanism, terrace, unconsolidated accumulative formation, three-dimentional strength-reduction method

CLC Number: 

  • TU 452
[1] 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.
[2] TANG Zhen, HUANG Mao-song, YUAN Ju-yun, . Upper bound analysis of basal stability of excavations based on continuous velocity fields [J]. , 2017, 38(3): 833-839.
[3] WANG Hui-chang, WANG Bin, JIANG Ren-gui, WANG Cai-lian, ZHANG Hua,. Maximum settlement calculation of rigid-pile composite foundation by method of compression of cushion between pile top and foundation [J]. , 2016, 37(S2): 442-448.
[4] DU Guo-liang, ZHANG Yong-shuang, YAO Xin, GUO Chang-bao, YANG Zhi-hua,. Formation mechanism analysis of Wulipo landslide-debris flow in Dujiangyan city [J]. , 2016, 37(S2): 493-501.
[5] HOU Zhen-kun , YANG Chun-he , WANG Lei , LIU Peng-jun , GUO Yin-tong ,. Hydraulic fracture propagation of shale horizontal well by large-scale true triaxial physical simulation test [J]. , 2016, 37(2): 407-414.
[6] XU Yang-qing, LIU Guo-feng, WU Xi-chen. Research on hydrogeological parameters of aquifer in 1st terrace of Yangtze River in Wuhan and its application [J]. , 2016, 37(10): 2915-2920.
[7] LI Tao，ZHANG Zi-zhen，ZONG Lu-dan. Study of formation mechanism and prediction of sinkholes in soil stratum induced by subterranean cavity [J]. , 2015, 36(7): 1995-2002.
[8] SHEN Tong, WANG Yun-sheng, WU Long-ke. Discrete element simulation analysis of formation mechanism of Xiaonanhai landslide in Chongqing city [J]. , 2014, 35(S2): 667-675.
[9] JIANG Jing-shan , CHENG Zhan-lin , ZUO Yong-zhen , DING Hong-shun,. CT triaxial rheological test on coarse-grained soils [J]. , 2014, 35(9): 2507-2514.
[10] LU Li-xue, CHI Shi-chun. Threshold strain study of dynamic Bouc-Wen model for soils [J]. , 2014, 35(5): 1311-1316.
[11] YE Wan-jun, YANG Geng-she, ZHANG Hui-mei, SHEN Yan-jun, LI Xiao, LIANG Bo. Research on formation mechanism and stability of tensile cracking-sliding loess collapse [J]. , 2014, 35(12): 3563-3568.
[12] LIU Jian-you , ZHAO Yong , LI Peng-fei . Study of size effect of deformation of rockmass surrounding tunnel [J]. , 2013, 34(8): 2165-2173.
[13] XIAO Shi-rong , LU Shu-sheng , GUAN Hong-fei , SONG Gui-lin，. Study of geomechanical model of Liangshuijing landslide in Three Gorges Reservoir area [J]. , 2013, 34(12): 3534-3542.
[14] NI Wei-da , TANG Hui-ming , HU Xin-li , WU Yi-ping , SU Ai-jun . Research on deformation and stability evolution law of Huangtupo riverside slump-mass No. I [J]. , 2013, 34(10): 2961-2970.
[15] QIN Jian-min, ZHANG Hong-wu. Microscopic theoretical model of critical state for granular materials [J]. , 2010, 31(12): 3697-3703.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] ZHANG Wen-jie，CHEN Yum-min. Pumping tests and leachate drawdown design in a municipal solid waste landfill[J]. , 2010, 31(1): 211 -215 .
[2] GONG Wei-li, AN Li-qian, ZHAO Hai-yan, MAO Ling-tao. Multiple scale characterization of CT image for coal rock fractures based on image description[J]. , 2010, 31(2): 371 -376 .
[3] WAN Zhi, DONG Hui, LIU Bao-chen. On choice of hyper-parameters of support vector machines for time series regression and prediction with orthogonal design[J]. , 2010, 31(2): 503 -508 .
[4] GAO Guang-yun, ZHAO Yuan-yi, GAO Meng, YANG Cheng-bin. Improved calculation for lateral dynamic impedance of pile groups in layered soil[J]. , 2010, 31(2): 509 -515 .
[5] SUN Xi-yuan, LUAN Mao-tian, TANG Xiao-wei. Study of horizontal bearing capacity of bucket foundation on saturated soft clay ground[J]. , 2010, 31(2): 667 -672 .
[6] WANG Ming-nian, GUO Jun, LUO Lu-sen, Yu Yu, Yang Jian-min, Tan Zhon. Study of critical buried depth of large cross-section loess tunnel for high speed railway[J]. , 2010, 31(4): 1157 -1162 .
[7] TAN Feng-yi, Jiang Zhi-quan, Li Zhong-qiu, YAN Hui-he. Application of additive mass method to testing compacted density of filling material in Kunming new airport[J]. , 2010, 31(7): 2214 -2218 .
[8] CHAI Bo, YIN Kun-long, XIAO Yong-jun. Characteristics of weak-soft zones of Three Gorges Reservoir shoreline slope in new Badong county[J]. , 2010, 31(8): 2501 -2506 .
[9] WANG Wei-ming, SUN Rui, CAO Zhen-zhong, YUAN Xiao-ming. Comparative study of features of liquefied sites at home and abroad[J]. , 2010, 31(12): 3913 -3918 .
[10] WANG Guang-jin，YANG Chun-he ，ZHANG Chao，MA Hong-ling，KONG Xiang-yun ，HO. Research on particle size grading and slope stability analysis of super-high dumping site[J]. , 2011, 32(3): 905 -913 .
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