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EricLloyd_MS_Thesis_2023.pdf (3.04 MB)

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How Sediment Size Heterogeneity Controls the Piping Potential: A Laboratory Study

Lloyd, Eric Christopher
http://rave.ohiolink.edu/etdc/view?acc_num=kent1700148067180743

Abstract Details

2023, MS, Kent State University, College of Arts and Sciences / Department of Earth Sciences.
Piping or internal erosion has been responsible for almost half of all dam failures worldwide. In this research, we studied the influence of grain size heterogeneity, as characterized by sediment size (d50) and the uniformity coefficient (Cu), on piping potential. A novel experimental setup was designed in-house that included sediment mass, pressure, and turbidity sensors allowing the examination of transient changes during piping events. Porosity and conductivity were analyzed in order to compare trends across varying grain size distributions. Mass values of soil lost during piping failure via a continuous mass balance and a turbidity meter to capture fines that remain in suspension were both utilized to capture the magnitude of piping failure. Minute Piping and Clogging events that are only able to be captured via the pressure transducers were recorded during this experiment, adding complexity to the onset of piping phenomena. The smaller the Cu, the less clogging events occurred before piping failure. It was noted that these minute piping and clogging events would stabilize as the sediment column reached equilibrium. This research allows for further studies to expand on these piping and clogging events as well as depicted trends between soil heterogeneity and piping potential.
Kuldeep Singh (Advisor)
David Hacker (Committee Member)
Anne Jefferson (Committee Member)
57 p.
Civil Engineering; Earth; Engineering; Environmental Engineering; Environmental Geology; Experiments; Geology; Hydrologic Sciences; Hydrology; Soil Sciences
piping; hydraulic gradient; grain size distribution; d50; coefficient of uniformity; turbidity; mass balance; flow rate; clogging; unclogging

Recommended Citations

Citations

  • Lloyd, E. C. (2023). How Sediment Size Heterogeneity Controls the Piping Potential: A Laboratory Study [Master's thesis, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1700148067180743

    APA Style (7th edition)

  • Lloyd, Eric. How Sediment Size Heterogeneity Controls the Piping Potential: A Laboratory Study. 2023. Kent State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1700148067180743.

    MLA Style (8th edition)

  • Lloyd, Eric. "How Sediment Size Heterogeneity Controls the Piping Potential: A Laboratory Study." Master's thesis, Kent State University, 2023. http://rave.ohiolink.edu/etdc/view?acc_num=kent1700148067180743

    Chicago Manual of Style (17th edition)

kent1700148067180743
48
© 2023, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.