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Numerical modelling of hydro-mechanical behaviour of ground settlement due to rising water table in loess

Author

Listed:
  • Yanrong Xu

    (Lanzhou University
    National University of Singapore)

  • C. F. Leung

    (National University of Singapore)

  • Jian Yu

    (National University of Singapore
    Tongji University)

  • Wenwu Chen

    (Lanzhou University)

Abstract

The numerical simulation of collapsible settlement in loess soil subjected to rising ground water table is presented in this paper. A coupled hydro-mechanical model is proposed. Comparisons between the results of numerical simulations and those of oedometer and in situ water immersion field test in Lanzhou, northwest China, reveal good agreement, which validates the proposed model formulation. Factors that influence the ground settlement of loess including initial elevation of ground water table, rising water height and velocity are then evaluated. The results of the analyses reveal that the most critical situation of largest possible ground settlement due to ground water rising in loess involves initial water table elevation of 10 m and rising water velocity of 0.5 m/year. Two upper bound lines of predicted maximum possible ground settlement are proposed to facilitate a preliminary quick evaluation of ground settlement due to rising water under different water table scenarios in loess.

Suggested Citation

  • Yanrong Xu & C. F. Leung & Jian Yu & Wenwu Chen, 2018. "Numerical modelling of hydro-mechanical behaviour of ground settlement due to rising water table in loess," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 94(1), pages 241-260, October.
    • Handle: RePEc:spr:nathaz:v:94:y:2018:i:1:d:10.1007_s11069-018-3385-x
    DOI: 10.1007/s11069-018-3385-x
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    References listed on IDEAS

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    1. Mehdi Momeni & Ali Shafiee & Mojtaba Heidari & Mohammad Jafari & Mohammad Mahdavifar, 2012. "Evaluation of soil collapse potential in regional scale," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 64(1), pages 459-479, October.
    2. Y. Tang & Q. Xue & Z. Li & W. Feng, 2015. "Three modes of rainfall infiltration inducing loess landslide," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(1), pages 137-150, October.
    3. Ling Xu & Xiaojuan Qiao & Caixia Wu & Javed Iqbal & Fuchu Dai, 2012. "Causes of landslide recurrence in a loess platform with respect to hydrological processes," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 64(2), pages 1657-1670, November.
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    Cited by:

    1. Zhilu Chang & Huanxiang Gao & Faming Huang & Jiawu Chen & Jinsong Huang & Zizheng Guo, 2020. "Study on the creep behaviours and the improved Burgers model of a loess landslide considering matric suction," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 103(1), pages 1479-1497, August.

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