Water level fluctuation, water pressure in tension crack and stream erosion are the important factors for failure of subgrade slope along the river. Based on the limit equilibrium theory, the dimensionless expressions of safety factor for subgrade slope stability along river subjected to the condition of many factors were deduced. And a rounded analysis for the subgrade slope was performed, in which the water level in river, water pressure in tension crack and stream erosion are major factors. Parametric analysis shows that (1) Rapid drawdown of water level, water level elevation in tension crack, seepage force in failure face, blocked outflow slot, and stream erosion in toe of subgrade slope has a disadvantage effect on the subgrade slope stability. 2) The subgrade slope stability factor decreases first and increases afterward with the increasing water level in river. High water–level in river has an advantageous effect on the subgrade slope stability, while low water—level in river is an adverse factor for the subgrade slope stability. Theoretically, these analysis results gave an answer to the problem why some subgrade slopes along river in mountain areas can not maintain their stability in rainy season.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Stability of Subgrade Slope along River Subjected to Water Level Fluctuations and Stream Erosion


    Contributors:
    Zhao, Lianheng (author) / Luo, Qiang (author) / Li, Liang (author) / Dan, Hancheng (author) / Luo, Suping (author)


    Publication date :

    2011-08-15


    Size :

    92011-01-01 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Study on Anti-Slide Stability of Rock Slope along River

    Luo, Wei / Li, Liang / Zhao, Lian-heng et al. | ASCE | 2014


    Stability Analysis of Soil Slope Subjected to Perched Water Condition

    Tang, Dong / Jiang, Zhongming / Yuan, Tao et al. | Springer Verlag | 2020


    A grid for subgrade stability

    Wanek-Libman, Mischa | IuD Bahn | 2011


    River-adjacent auxiliary channel structure of high-water-level-difference inland river slope ramp

    ZHANG YUGUANG / LUO FANWEN / YIN QUANLAI et al. | European Patent Office | 2023

    Free access