Rock and Soil Mechanics ›› 2021, Vol. 42 ›› Issue (3): 681-690.doi: 10.16285/j.rsm.2020.1177

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Surface tilt deformation of soil landslides based on laboratory and field tests

XIE Ji-ren1, 2, QIAO Shi-fan1, YU Peng-kun1, UCHIMURA Taro3, WANG Gong-hui4, JIANG Yao5, FANG Zheng1, TIAN Jing-li1   

  1. 1. College of Civil Engineering, Central South University, Changsha, Hunan 410075, China; 2. Institute of Geographic Sciences and Natural Research, Chinese Academy of Science, Beijing 100101, China; 3. College of Civil and Environmental Engineering, Saitama University, Saitama, Japan; 4. Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan; 5. Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China
  • Received:2020-08-07 Revised:2020-12-30 Online:2021-03-11 Published:2021-03-15
  • Supported by:
    This work was supported by the Special Funds of National Natural Science Foundation of China (41941017), the Young Scholars of National Natural Science Foundation of China (41807278) and the Key Project of China Railway Technology Research and Development Plan(2017G007-D).

PDF (Chinese)

609

PDF (English)

28

Abstract: In recent years, surface tilt deformation of soil landslides has become an important indicator of landslide monitoring and early warning, but few studies have been done on the relationship between the slope surface tilt deformation and development characteristics of landslides. In this paper, a series of rainfall model tests combined with field tests was carried out to explore the relationship between the displacement and tilt deformation of slope surface in the process of landslide disaster evolution. A landslide warning method based on the curve of slope surface tilt deformation with time was established. The test results showed that the surface tilt deformation of soil landslides accelerates in the failure stage. There is a linear relationship between the reciprocal of tilt rate and the residual time of landslide before the failure, which can be used to predict the final failure time of landslides. In addition, in the process of landslide sliding, the surface tilt deformation and displacement of the landslide also show a linear correlation, and the corresponding slope is consistent with the sliding radius. The findings reveal, for the first time, the relationship between the slope surface tilt deformation and the geometric characteristics of the sliding zone, also provide the experimental basis for the prediction method of landslide sliding zone based on slope tilt surface deformation.

Key words: development characteristics of landslides, slope surface tilt deformation, slope surface displacement, sliding surface

CLC Number: 

  • TU457
[1] CHEN Huai-lin, YANG Tao, RAO Yun-kang, ZHANG Zhe, WU Hong-gang, XIE Jiang-wei, TENG Han-qing. Calculation method of sliding surface stress based on segmented sliding surface stress measurement system [J]. Rock and Soil Mechanics, 2025, 46(11): 3562-3573.
[2] HU Jiang, LI Xing, . Analysis of spatiotemporal deformation characteristics of deep excavated expansive soil slopes [J]. Rock and Soil Mechanics, 2024, 45(10): 3071-3080.
[3] HU Wei, WANG Hui, YAO Chen, HAO Dong-xue, SHI Dan-da, . Three-dimensional unified mechanical model and calculation method of uplift capacity of horizontal rectangular anchor plate in the whole region in sand [J]. Rock and Soil Mechanics, 2023, 44(6): 1811-1825.
[4] ZHANG Wen-lian, SUN Xiao-yun, CHEN Yong, JIN Shen-yi, . Slope stability analysis method based on compressive strength reduction of rock mass [J]. Rock and Soil Mechanics, 2022, 43(S2): 607-615.
[5] HU Wei, MENG Jian-wei, YAO Chen, LEI Yong, . A method for calculating vertical pullout ultimate bearing capacity of shallow circular anchor plate [J]. Rock and Soil Mechanics, 2020, 41(9): 3049-3055.
[6] CHEN Da, XU Qiang, ZHENG Guang, CAI Guo-jun, PENG Shuang-qi, WANG Zhuo, HE Pan. Study on deformation evolution of wedge landslide in complex layered soft rock based on centrifugal model test [J]. Rock and Soil Mechanics, 2020, 41(10): 3374-3384.
[7] ZHANG Xiao-xi, HE Si-ming, FAN Xiao-yi, . Seismic stability of L-shape retaining walls and determination method of sliding surface [J]. Rock and Soil Mechanics, 2019, 40(10): 4011-4020.
[8] ZHOU Yong, WANG Xu-ri, ZHU Yan-peng, LI Jing-bang, JIANG Xiao-kui,. Monitoring and numerical simulation of an interbedding high slope composed of soft and hard strong-weathered rock [J]. , 2018, 39(6): 2249-2258.
[9] YANG Gui, WANG Yang-yang, LIU Yan-chen, . Analysis of active earth pressure on retaining walls based on curved sliding surface [J]. , 2017, 38(8): 2182-2188.
[10] YANG Ming-hui, DAI Xia-bin, ZHAO Ming-hua, LUO Hong. Calculation of active earth pressure for limited soils with curved sliding surface [J]. , 2017, 38(7): 2029-2035.
[11] LIU Zhen-ping, YANG Bo, LIU Jian, HE Huai-jian，. Three-dimensional limit equilibrium method based on GRASS GIS and TIN sliding surface [J]. , 2017, 38(1): 221-228.
[12] ZHOU Yong, WANG Zheng-zhen, . Improvement of internal stability analysis method of soil nailing wall [J]. , 2016, 37(S2): 356-362.
[13] YAN Chao ，LIU Song-yu ，JI Xiao-lei，. Research on a secondary sliding surface analysis approach based on strength reduction method [J]. , 2016, 37(4): 935-942.
[14] ZHU Lei, HUAN Run-qiu, WANG Xiao-qun, NIE De-xin. Stability study of landslide based on dynamic evolution of sliding surface strength parameter [J]. , 2015, 36(S2): 431-438.
[15] YANG Li-fu , CHANG Xiao-lin , ZHOU Wei , CHENG Yong-gang , MA Gang , . Deep anti-sliding stability analysis of gravity dam with multiple sliding planes based on distinct element method [J]. , 2015, 36(5): 1463-1470.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd