MPM Simulation of fine particle migration process within unsaturated soils

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Abstract

Fine particle migration process induced by seepage forces is considered as one of the main mechanisms leading to failures of earth dams and colluvial soil slopes. So far, this process has been mainly simulated with the Finite Element Method (FEM). However, large soil deformation may take place at and after the failure, which is beyond the capability of FEM. In this paper, a coupled seepage-erosion formulation suitable for the Material Point Method (MPM) is proposed for this process based on the mixture theory. By simulating the fine particle migration process within both saturated and unsaturated 1D soil column under water pressure gradient, the formulation capabilities as well as its MPM implementation are validated.
Original languageEnglish
Title of host publicationProceedings of the 2nd International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction (MPM 2019)
EditorsDongfang Liang, Krishna Kumar, Alexander Rohe
Number of pages6
Publication statusPublished - Jan 2019
MoE publication typeA4 Article in a conference publication
EventInternational Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction - University of Cambridge, Cambridge, United Kingdom
Duration: 8 Jan 201910 Jan 2019
Conference number: 2
http://mpm2019.eu/home

Conference

ConferenceInternational Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction
Abbreviated titleMPM
CountryUnited Kingdom
CityCambridge
Period08/01/201910/01/2019
Internet address

Keywords

  • internal erosion
  • fine particle migration
  • unsaturated soil
  • material point method

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  • Cite this

    Lei, X., & Sołowski, W. T. (2019). MPM Simulation of fine particle migration process within unsaturated soils. In D. Liang, K. Kumar, & A. Rohe (Eds.), Proceedings of the 2nd International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction (MPM 2019) [mpm2019.21]