• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    • Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Application of image processing in internal erosion investigation

    Author(s)
    Mehdizadeh, A
    Disfani, MM
    Evans, R
    Arulrajah, A
    Ong, DEL
    Griffith University Author(s)
    Ong, Dominic E.L.
    Year published
    2017
    Metadata
    Show full item record
    Abstract
    Internal erosion is a prime cause of dam failure. Despite studies over the years, there are still many ambiguities in the post erosion response of an internally unstable soil. In this study, a new combined erosion-triaxial apparatus was developed to investigate the post erosion behavior of a gap-graded soil (vulnerable to internal erosion). This new apparatus eliminated the need to remove the soil sample which thus prevented any loss in saturation and furthermore minimized testing disturbance. Photogrammetry and X-ray tomography techniques were effectively employed to assess deformations during the erosion phase. It was found ...
    View more >
    Internal erosion is a prime cause of dam failure. Despite studies over the years, there are still many ambiguities in the post erosion response of an internally unstable soil. In this study, a new combined erosion-triaxial apparatus was developed to investigate the post erosion behavior of a gap-graded soil (vulnerable to internal erosion). This new apparatus eliminated the need to remove the soil sample which thus prevented any loss in saturation and furthermore minimized testing disturbance. Photogrammetry and X-ray tomography techniques were effectively employed to assess deformations during the erosion phase. It was found that the primary soil structure became temporarily unstable after the initial erosion of some fine particles. However, this temporary instability was found to be reversed after rearrangement of the remaining coarse particles. This was detected by the measurement of sudden spikes in vertical deformations on the sample surface. This phenomenon was also visible in the 3-D Computed Tomography scans. Although dilation tendency during shearing was found to decrease after erosion, the measured increase in undrained shear strength at small strains was likely to be caused by enhanced mechanical interlock between the coarse particles.
    View less >
    Conference Title
    ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering
    Volume
    2017-September
    Publisher URI
    https://www.issmge.org/events/icsmge-2017-19th-international-conference-on-soil-mechanics-and-geotechnical-engineering-seoul
    Subject
    Geomatic engineering
    Publication URI
    http://hdl.handle.net/10072/389924
    Collection
    • Conference outputs

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander