Effects of soil inhomogeneity on seepage behavior within embankments

https://doi.org/10.31130/ud-jst.2023.558E
Tóm tắt: 105 | PDF: 138

##plugins.themes.academic_pro.article.main##

Author

  • Koji Nakashima
    Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan
    Katsuyuki Kawai
    Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan
    Hideaki Yoshida
    Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan

Từ khóa:

Soil inhomogeneity
seepage behavior
road embankment
levee
internal erosion

Tóm tắt

Heavy rain events that accompany recent climate change, have triggered disasters of embankment structures, such as road embankment and levee. Internal erosion, which is the migration of soil particles following seepage flow, causes inhomogeneity of the soil properties of the embankment. However, there are very few studies investigating the effects of soil inhomogeneities on the seepage behavior of groundwater within embankment. In this study, small-scale modelling tests were performed under repeated seepage flow histories. As a result, the groundwater table gradually increased in accordance with the number of seepage repetition. Modelling the fluctuation of permeability due to internal erosion following seepage flow was additionally performed using the soil/water/air coupled finite element analysis, and seepage behavior was investigated. In these analyses, the lower permeability of the toe of embankment was shown to possibly cause an increase in upward water pressure.

Tài liệu tham khảo

    [1] Honjo, H. Mori, M. Ishihara and Y. Otake, “On The Inspection of River Levee Safety in Japan by MLIT”, Geotechnical Safty and Risk V, pp. 873-878, 2015. doi:10.3233/978-1-61499-580-7-873.
    [2] Horikoshi and A. Takahashi, “Suffusion-induced change in spatial distribution of fine fractions in embankment subjected to seepage flow”, Soils and Foundations, vol. 55, no. 5, pp. 1293-1304, 2015. https://doi.org/10.1016/j.sandf.2015.09.027
    [3] C. Kenney and D. Lau, “Internal stability of granular filters”, Canadian Geotechnical Journal, vol. 22, no. 2, pp. 215-225, 1985.
    [4] S. Chang and L. M. Zhang, “Extended internal stability criteria for soils under seepage”, Soils and Foundations, vol. 53, no. 4, pp. 569-583, 2013. https://doi.org/10.1016/j.sandf.2013.06.008
    [5] Sugiyama, K. Kawai and A. Iizuka, “Effects of stress conditions on B-value measurement”, Soils and Foundations, vol. 56, no. 5, pp. 848-860, 2016. https://doi.org/10.1016/j.sandf.2016.08.009
    [6] Ohno, K. Kawai and S. Tachibana, “Elasto-plastic constitutive model for unsaturated soil applied effective degree of saturation as a parameter expressing stiffiness”, Journal of Japan Society of Civil Engineers, vol. 63, no. 4, pp. 1132-1141, 2007 (in Japanese). DOI:10.2208/jscejc.63.1132.
    [7] Kawai, A. Iizuka, E. Hayakawa and W. Wang, “Non-uniform settlement of compacted earth structures caused by the deformation characteristics of unsaturated soil on wetting”, Soils and Foundations, vol. 47, no. 2, pp. 195-205, 2007.
Xem thêm

##plugins.themes.academic_pro.article.sidebar##

Đã Xuất bản

Sep 30, 2023
Download
PDF (English)
Cách trích dẫn
Nakashima, K., K. Kawai, và H. Yoshida. “Effects of Soil Inhomogeneity on Seepage Behavior Within Embankments”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 21, số p.h 9.3, Tháng Chín 2023, tr 1-4, doi:10.31130/ud-jst.2023.558E.

##plugins.themes.academic_pro.article.details##