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Excess Pore Pressure During One-Dimensional Self-weight Consolidation

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Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours (GSIC 2018)

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Abstract

Consolidation of porous media under self-weight is a common process in nature environment and engineering facilities, such as sedimentation of soil particles in river delta and the consolidation of mine tailings during operation of tailings reservoir. During self-weight consolidation, the excess pore pressure is a typical indicator for degree of consolidation. In this study, a one-dimensional (1D) model coupling the nonlinear variation of hydraulic conductivity and compressibility was proposed to simulate the self-weight consolidation process. Because of the nonlinear variation of soil parameters, a nonzero excess pore pressure was formed at steady state, and an iterative method was employed to obtain the distribution of the ultimate excess pore pressure along the model height. The results of the iterative method was then verified by the results from numerical simulation. The magnitude of the ultimate excess pore pressure induced by the nonlinear soil properties could be significant and should be adequately considered in engineering practice.

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Authors and Affiliations

  1. State Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China

    Dantong Lin, Hui Wu & Liming Hu

Authors
  1. Dantong Lin
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  2. Hui Wu
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  3. Liming Hu
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Corresponding author

Correspondence to Liming Hu .

Editor information

Editors and Affiliations

  1. Royal Melbourne Institute of Technology , Melbourne, Victoria, Australia

    Annan Zhou

  2. The University of Akron , Akron, Ohio, USA

    Junliang Tao

  3. Geotechnical Engineering, Tongji University, Shanghai, China

    Xiaoqiang Gu

  4. University of Toledo , Toledo, Ohio, USA

    Liangbo Hu

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Lin, D., Wu, H., Hu, L. (2018). Excess Pore Pressure During One-Dimensional Self-weight Consolidation. In: Zhou, A., Tao, J., Gu, X., Hu, L. (eds) Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0125-4_45

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