Laboratory characterization of rainfall-induced loess slope failure

被引:187
|
作者
Wu, L. Z. [1 ]
Zhou, Y. [1 ]
Sun, P. [2 ,3 ]
Shi, J. S. [4 ]
Liu, G. G. [1 ]
Bai, L. Y. [1 ]
机构
[1] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
[2] Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China
[3] Minist Land & Resources, Key Lab Neotecton Movement & Geohazard, Beijing 100081, Peoples R China
[4] MLR, China Geol Survey, Beijing 100037, Peoples R China
关键词
Loess; Rainfall infiltration; Landslide; Flume experiment; PORE-PRESSURE GENERATION; LANDSLIDE; FLUIDIZATION; PLATFORM; BAOJI; MODEL;
D O I
10.1016/j.catena.2016.11.002
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Loess slopes are widely distributed throughout the northwestern region of China and are prone to slope failure in response to heavy rainfall. We undertook three groups of flume experiments in the laboratory to study loess slope dynamics under artificial rainfall conditions. Additionally, a laser scanner was used to observe loess landslide deformation characteristics and failure development. A numerical analysis of unsaturated seepage in loess slopes because of rainfall infiltration was performed. Moisture content, pore-water pressure, and slope deformation were monitored to quantify the relationship between rainfall infiltration and loess slope stability. Movement of the wetting front near the slope surface was triggered by rainfall and related to rainfall intensity and duration, which is consistent with the numerical solution. Rainfall infiltration increased pore-water pressure, producing gravity-driven landslides. We observed that landslide development began with local failure in the toe slope that gradually retreated toward the crown, forming a multi-sliding displacement, and eventually resulting in total slope failure. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 8
页数:8
相关论文
共 50 条
  • [22] Influence of intrusive granite dyke on rainfall-induced soil slope failure
    Zhang, Chenyang
    Zhang, Ming
    Zhang, Taili
    Dai, Zhenwen
    Wang, Luqi
    BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2020, 79 (10) : 5259 - 5276
  • [23] Slope stability and failure dynamics of rainfall-induced landslide: Algorithm and applications
    Wang, Jun-Hao
    Xu, Wen-Jie
    COMPUTERS AND GEOTECHNICS, 2025, 177
  • [24] A Data Integration Approach for Assessment of Rainfall-Induced Slope Failure Susceptibility
    Baral, A.
    Shahandashti, S. M.
    CONSTRUCTION RESEARCH CONGRESS 2022: INFRASTRUCTURE, SUSTAINABILITY, AND RESILIENCE, 2022, : 480 - 489
  • [25] Predicting rainfall-induced slope instability
    Fourie, AB
    PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING, 1998, 131 (02) : 115 - 118
  • [26] Back analyses of rainfall-induced slope failure in Northland Allochthon formation
    Harris, S. J.
    Orense, R. P.
    Itoh, K.
    LANDSLIDES, 2012, 9 (03) : 349 - 356
  • [27] Bamboo geocell for prevention of heavy rainfall-induced soil slope failure
    Vamsiraju Adimilli
    Venkata Rama Subba Rao Godavarthi
    Arabian Journal of Geosciences, 2022, 15 (12)
  • [28] Back analyses of rainfall-induced slope failure in Northland Allochthon formation
    S. J. Harris
    R. P. Orense
    K. Itoh
    Landslides, 2012, 9 : 349 - 356
  • [29] Centrifuge modelling of rainfall-induced slope failure in variably saturated soil
    Shun Wang
    Gregor Idinger
    Wei Wu
    Acta Geotechnica, 2021, 16 : 2899 - 2916
  • [30] Influence of intrusive granite dyke on rainfall-induced soil slope failure
    Chenyang Zhang
    Ming Zhang
    Taili Zhang
    Zhenwen Dai
    Luqi Wang
    Bulletin of Engineering Geology and the Environment, 2020, 79 : 5259 - 5276